A Relative Positioning Technique with Spatial Constraints for Multiple Targets Based on Sparse Wireless Sensor Network
|
|
- Scott Jenkins
- 5 years ago
- Views:
Transcription
1 Sensors & ransducers, Vol. 158, Issue 11, November 213, pp Sensors & ransducers 213 by IFSA A Relatve Postonng echnque wth Spatal Constrants for Multple argets Based on Sparse Wreless Sensor Network Wemng U, aodong YIN, Zhuz HE, anyang LIU Department of Hydrography and Cartography, Dalan Naval Academy, 11618, Dalan, Laonng, P. R. Chna el.: E-mal: xwm5@mals.tsnghua.edu.cn Receved: 18 September 213 /Accepted: 25 October 213 /Publshed: 3 November 213 Abstract: Many applcatons of wreless sensor network requre precse knowledge of the locatons of nodes. Conventonal sparse wreless sensor network, whch s formed by a restrcted number of nodes, has two drawbacks,.e., low connectve rato and hop count lmted, whch probably cause the network lnk falure and/or low locatng performance. o mprove the relatve poston precson and relablty of multple targets based on the sparse wreless sensor network, a relatve locatng method wth spatal constrants s proposed accordng to the dfferent network confguraton and nter-range between target nodes for the sparse wreless sensor network, of whch the spatal constrant benchmarks nclude two categores of datum, namely, the spatal absolute dsplacement datum and drecton rotaton datum. In partcular, t s proven on the bass of the prncple of survey adjustment that the nodes poston ambguty, whch s caused by the rank defcency, could be solved whle the estmatng precson of the target nodes poston s unchanged. he smulaton results show that compared to the conventonal tme-varyng flterng, e.g. Kalman Flterng, the proposed constrant poston method may rapdly respond to network-lnk communcaton falure, and ncrease relatve postonng precson about 32.9 % va ntroducng the spatal constrant benchmarks. Copyrght 213 IFSA. Keywords: Wreless sensor network, Multple targets, Relatve poston, Spatal constrant, Poston benchmark, Kalman Flterng. 1. Introducton Wth the rapd development of mcroelectromechancal system, wreless communcaton system and low-power embedded system, wreless sensor network (WSN) come nto beng [1], of whch sea-surface wreless sensor network (S 2 WSN) are regarded as a specal communcaton networks consstng of a number of shps and buoys, namely, multple targets, accordng to a certan communcaton protocols. hrough rado technology, these targets communcate wth each other, whch may mplement cooperatve observaton, cooperatve communcaton and cooperatve remote sensng for envronment n tmes of exteror locaton benchmarks (lke global postonng system, GPS) outages or n these benchmarks dened sea areas. hese WSN are expected to form the backbone of future ntellgent networks for a broad range of applcatons such as underwater survellance and traffc montorng. For most applcatons of the WSN, multple-target localzaton s one of the most challengng and Artcle number P_
2 Sensors & ransducers, Vol. 158, Issue 11, November 213, pp mportant ssues, because the locaton nformaton s typcally useful for coverage, deployment, routng, locaton servce, target trackng, and rescue operatons n WSN. In the development of ocean resource, utlzng WSN together wth engneerng boat, ocean drllng platform and underwater robot to collaboratvely determne the target locaton, can mprove the precson of underwater ppelne layng, olfeld mnng and waterway dredgng [2]. In salvagng the crash shp and arcraft, usng the WSN and the engneerng boat to collaboratvely determne the poston of black box for shp and/or arcraft, can mprove the precson and effcency of underwater salvage. In enforcng oceanc law, usng WSN postonng technology can mprove the tmelness and accuracy of sea polce deployment. As for space envronment montorng, maneuverng status of flyng vehcles (FVs) may be descrbed n detaled through cooperatve postonng among the S 2 WSN and the FVs. As such, they have superor postonng precse and relablty durng trackng the FVs n the bad ocean envronment because they can automatcally deploy nodes and deal wth the communcaton malfuncton among the nodes when some network nodes fal or new nodes become a member of the network. he remander of ths paper s organzed as follows. Secton 2 ntroduces the relevant work about relatve postonng method for multple targets based on WSN. In Secton 3, we descrbe the basc prncple of relatve postonng on basc of the sparse dstrbuted WSN (SWSN). Secton 4 deduces the mathematcal model of constrant poston for the SWSN. Secton 5 presents smulaton results to verfy the effectveness of the proposed algorthm. Fnally, Secton 6 summarzes the contrbutons and concludes the paper. 2. Relevant Work As to the features of modern WSN wth large node number and huge network scale, the postonng algorthms proposed currently for multple targets have many superor performances, such as low energy consumpton, low dependence, strong robustness and hgh adaptablty. ng and Jan consdered cooperatve postonng usng acoustc range measurements for underwater sensor networks, ncludng networks formed by autonomous unmanned underwater vehcles. Severe multpath scatterng from the seabed and sea surface can result n naccurate range measurements. In an nhomogeneous medum, such as sea water, the drect path was not necessarly the strongest path or the frst arrval. hen, the range measurements based on the frst or strongest arrval could be sgnfcantly based. ng and Jan ntroduce heren a centralzed cooperatve postonng algorthm for underwater multple targets, referred to as the weghted Gerchberg-Saxton algorthm (WGSA). he proposed algorthm assumed that for each acoustc rangng channel, multple range measurements correspondng to several propagaton paths, one of whch was the drect path, were avalable for cooperatve postonng. he WGSA can be used to automatcally dentfy the drect path [3]. He et al. presented multple target localzaton va compressed sensng n the WSN. he multple target localzaton ssue was transformed nto compressed sensng ssue by desgnng teraton backtrackng algorthm usng mult-resoluton analyss dea. he achevement of ths algorthm was to save the energy of WSN nodes, by mnmzng nter-node communcaton, n the result of whch the lfetme of the WSN was prolonged, at the cost of ncreasng the computaton complexty n the fuson center nstead. However, the tme complexty of the algorthm was ncreased [4]. An ultra-wdeband 3-D postonng technque was descrbed for locatng wreless sensor nodes n extreme multpath envronments [5]. hey typcally constructed part of a network of sensors used to montor salent parameters such as temperature and humdty n large ndustral storage vessels. he novelty of ths approach was twofold. Frst, a leadng ultra-wdeband pulse edge detecton method was combned wth a seres of spatally dverse measurements to solate the lne-of-sght (LOS) component from the unwanted multpath nterference from the vessel walls. Second, a new locaton algorthm based on the statstcal analyss of sphercal functon ntersecton ponts was appled to the receved tme-doman data to mprove the estmaton of the tme of flght at each measurement locaton. hese two features combned to facltate both precson postonng and cumulatve error source estmaton and yelded resolutons approachng 2 cm n rch scatterng envronments. Lterature [6] descrbed moble anchor postonng, a range-free postonng method, whch made use of the beacon packets of moble anchor and the locaton packets of neghbor nodes to calculate the locaton of the nodes. he anchor node, whch was equpped wth global postonng system, e.g., GPS, broadcasts ts coordnates to the sensor nodes as t moved through the network. As the sensor nodes collect enough beacons, they were able to calculate ther locatons locally. But for sea-surface wreless sensor networks, the network connectvty and sngle-hop dstance was low because of ocean dynamc envronment, sea clutter, and other nfluences. herefore, to solve ths problem, we need to mprove ther network densty or ncrease the antenna heght, etc. As to the WSN constructed by flyng vehcles, the hgh-densty network n the ar can t be random deployed on account of ground control, arcraft loadng, cost and other factors. Meanwhle, caused by antenna scope, transmsson meda, costs and other nfluence, ths type of sensor was dffcult to mplement through mult-hop mesh to mprove connectvty and relable relatve postonng. 184
3 Sensors & ransducers, Vol. 158, Issue 11, November 213, pp Generally, through the deployment of a lmted number of nodes accordng to a certan spatal confguraton to accomplsh specfc tasks, ths WSN s named as a sparse dstrbuted WSN (SWSN) n ths paper. Based on the dstrbuton characterstcs of the SWSN, we propose a relatve postonng algorthm for multple targets based on spatal constrants, whch s named as RPSC. In benchmark dened sea areas and unavalable solvng locaton parameters of the target nodes, the SWSN network relablty and precson of relatve postonng may be mproved by ntroducng spatal constrants and spatal correlaton condtons of the SWSN. Furthermore, the effectveness of the algorthm s testfed by Monte Carlo smulaton. 3. he Basc Prncple of Relatve Postonng for Multple argets Wthout loss of generalty, takng a sea-surface SWSN wth four sensors, namely, four nodes or targets, as an example for collaboratve task, the state equaton of the SWSN can be expressed as F U W, (1) k+ 1 = k+ 1/ k k + k + k , and denote the state vectors of four sea-surface sensors,.e., [ ] = x x x y y y z z z, ( x, yz, ) are the poston components of the surface sensor, whle x, yz, x, yz, are where = [ ] ( ) are the velocty components and ( ) the acceleraton components. F s the state transton matrx. Whle, U s the nput matrx and W s the system process nose, whch s assumed to be a zeromean Gaussan whte nose. It s worth notng that lterature gves ts adaptve varance Q as follows [7]. 2 Qk = 2ασaQ (2) where α s the recprocal of the maneuver (acceleraton) tme constant and Q s an ntal value of adaptve varance Q k. For example, α 1/6 for a lazy turn, α 1/2 for an evasve maneuver, and α 1for atmospherc turbulence. he localzaton protocols are classfed nto two categores: range-based protocol and range-free protocol. he range-based protocols employ dstance or angle estmaton technques to acheve fne accuracy, whch requre the use of expensve hardware. On the other hand, the range-free technques depend on the contents of receved messages to support coarse accuracy. Currently, avalable observaton nformaton for postonng SWSN has tme of arrval (OA), tme dfference of arrval (DOA), receved sgnal strength ndcator (RSSI), frequency dfference of arrval (FDOA) and other forms [8-9], commonly usng DOA. herefore, takng a SWSN based on OA among the target nodes as an example for followng dscussons, the relatve dstance measurements among the nodes are /2 rj = [( x xj) + ( y yj) + ( z zj) ] + vj (3) where (,, ) x yz ( j j and, j = 1, 2,..., 4) are the coordnates of the SWSN. hen, the nonlnear observng equaton s wrtten as ( ) zk = f k + vk where [ ] (4) z k = r12 r13 r14 r43, whch s the measurement vector, and v k s the measurement nose, whch s assumed to be a zero mean whte Gaussan nose vector wth covarance matrx R ( k). Convertng equaton (4) nto lnear format, t yelds the error equaton as follows: V = Aˆ L (5) where A s measurement equaton f ( k ) x k + 1/ k 4. he Mathematcal Model of Constrant Poston for SWSN Usng relatve dstance observatons r j among sensors for ndependent relatve postonng, f the rangng lnks of the sensor were unnterrupted, we may attan 12 range measurements. Fortunately, ths number s equal to the number of unknown coordnates of the four sensors, whle meets the requrements of the necessary number of observatons [1]. he transmsson lnks between the target nodes are easly unlocked, furthermore, reducng the connectvty on account of transmsson meda, node atttude, atmosphere, oceans envronment, and other nfluences. At ths moment, wthout loss of generalty, settng u as the number of the coordnates parameters for the whole SWSN nodes whle t as the necessary number of observatons n solvng equaton (5), the rank of the measurement matrx A s rank( A ) = t < u, and the number of rank defcency d = u t. Accordng to the prncple of least squares V PV = mn, where P s nonsngular empowerng matrx,the norm equaton s wrtten as where W= A PL, and N = W, (6) rank( ) = rank( ) = t < u N A PA. he normal equaton has many nfnte solutons whle N s sngular.. 185
4 Sensors & ransducers, Vol. 158, Issue 11, November 213, pp In order to acheve the only soluton of the unknown parameters, the constrant condton of the gven datum S s S P ˆ =, (7) where rank( S ) = d, and AS =. Left multplyng AS by where AP, we can attan ( ) = = APAS NS, S s row full rank. P s named as the datum weght,and the dfferent P reflects the dfferences n datum constrants [1-11]. Generally, when SWSN conducts collaboratve detecton msson, e.g., underwater survellance, they must mantan a requred geometry confguraton by some control methods. In other words, the SWSN topology s correlated n adjacent moments. Accordng to the above-mentoned assumpton, two categores of spatal benchmark condtons are defned. a) Absolute dsplacement benchmark. As shown n Fg. 1, the sold lnes denote the poston lnes of the sensors before adjustment, whle the dashed lnes after adjustment. Pont O s the vrtual centrod. where ( x ˆ, y ˆ, z ˆ ) are the dsplacement values of poston adjustments. b) Drecton rotaton benchmark condton. As shown n Fg. 2, θ ( = 1, 2,..., 4) are the relatve rotaton angles centerng at vrtual centrod after poston adjustment. Fg. 2. Drecton rotaton benchmark of the SWSN. he drecton benchmark means that the sums of drecton rotaton angles before and after adjustment are equal to zeros n the respectve coordnate plane. hat s ( z y y z) ( x z z x ˆ ) ( y x x y) 4 ˆ ˆ = = 1 4 ˆ =, = 1 4 ˆ ˆ = = 1 (9) Fg. 1. Absolute dsplacement benchmark of the SWSN. where ( x, y, z ) denote the approxmate coordnates,.e., the system output at moment k 1. It follows that equaton (8) and equaton (9) can be unformly represented as hen, the absolute dsplacement datum condton means that the sums of dsplacement values before and after adjustment are equal to zeros n the respectve axs. hat s represented as 4 xˆ = = 1 4 yˆ = = 1 4 zˆ = = 1 (8) S ˆ =, (1) where = [ xˆ yˆ zˆ xˆ yˆ zˆ zˆ ] Accordng to the aforementoned sx benchmark condtons, the coeffcent matrx S s gven by S = (11) z1 y1 z2 -y2 z3 y3 z4 y4 -z1 x1 -z2 x2 -z3 x3 -z4 x4 y1 -x1 y2 -x2 y3 -x3 y4 -x4 186
5 Sensors & ransducers, Vol. 158, Issue 11, November 213, pp Accordng to the dfferent measurements and the confguratons of the SWSN, able 1 lsts the general expresson of the correspondng constrant benchmark S. Accordng to the above constrant datum S and the prncple of least squares, settng the functon ϕ as ϕ = V PV + 2 K ( S P ˆ ) = mn, we can acheve the followng equatons [11]. Nˆ + P SK = W, (12) ˆ S P = where K s the coeffcent matrx. Left multplyng the frst equaton n equaton (12) by S, and consderng AS = and NS =, we can attan S P SK (13) = able 1. he constrant benchmark S for the dfferent confguratons Confguraton Horzontal dstrbuton network Spatal dstrbuton network Measurement Datum Number Datum Parameter Range and angle d=2 2 dsplacements Range or range and angle d=3 Angle d=3 Range or range and angle Range d=6 Angle d=6 2 dsplacements and 1 drecton 2 dsplacements and 1drecton d=3 3 dsplacements 3 dsplacements and 3 drecton 3 dsplacements and 3drecton Dsplacement Benchmark z y z y Drecton Benchmark y x y x z x z x y x y x For the quadratc form S P S can t be equal to zero, the matrx K= n equaton (13). Obvously, ϕ = V PV =mn. It s concluded that the solvng nature of the relatve postonng of the SWSN s unrelated wth the addtonal constrant datum S of the unknown parameters, namely, V PV s an nvarant, and the correcton value V obtaned from solvng sn t changed wth the dfferent constrant benchmark. In other words, under the condton wthout changng the fnal arguments precson, through ntroducng the spatal constrant benchmark, the numerous solutons problem of the measurement equaton s overcome due to lack of benchmark, namely, solvng ambguty. Left multplyng the second equaton n equaton (12) by P S, then addng the frst equaton of equaton (12), consderng K=, we can attan N + P SS P ˆ = W (14) ( ) At ths moment, coeffcent matrx ( N + P SS P ) s full rank. Settng matrx Q P as 1 QP = ( N + PSS P ), the fnal estmates of node localzaton parameters s 5. Smulaton and Analyss ˆ = QW (15) o valdate the effectveness of the proposed postonng algorthm wth benchmark constrant, we set a Monte Carlo smulaton wth 5 tmes. he four target nodes are deployed to a rectangle. he smulaton lasts for 225 s wth a 1-s samplng nterval. Durng 1 8 and s, the SWSN maneuver n a straght lne at constant velocty. Durng s, the SWSN maneuver n a semcrcle wth a rotatng speed of.19 deg/s. he ntal poston of node No. 1 s (1,, ) km, wth an ntal velocty of ( 15,, ) m/s. he precson of P 187
6 Sensors & ransducers, Vol. 158, Issue 11, November 213, pp the two-way rangng s 1. m whle the precson of the velocty measurng s.2 m/s. he nfluence of the ocean current or ar turbulence s.5 m. able 2 lsts the statstc value of the nodes trackng error respondng to the envronmental nfluence by the proposed algorthm compared wth the conventonal Kalman flterng (KF). Fg. 3 shows the trackng error of the vrtual centrod as to the dfferent postonng algorthms. able 2. he statstcal value of trackng error for the vrtual centrod wth dfferent postonng algorthms. he error unt s meter. Maneuverng Mode Mnmum Value Maxmum Value Mean Value RMSE KF RPSC KF RPSC KF RPSC KF RPSC Straght lne maneuverng Semcrcle maneuverng From Fg. 3, t s shown that the RPSC algorthm has smlar trackng performance to that of the conventonal KF method when the SWSN maneuver n a straght lne wth constant velocty. Durng 1 8 s, the two methods have approxmately equal root-mean-square errors (RMSE) for trackng. However, when maneuverng n a semcrcle, the KF method has an obvously sudden change compared wth the RPSC algorthm, partcularly at the startng pont of semcrcular moton, e.g., at 81 s. However, at ths moment the RPSC algorthm uses spatal constrant benchmarks and the vrtual centrod O'of the SWSN tracks the sudden maneuverng tmely. node,.e., No. 1. he smulaton lasts for 2 s wth a 1-s samplng nterval. he SWSN maneuvers wth a constant velocty of 2 m/s, and other smulaton parameters are not changed. Durng 7 12 s, an external nterference s added to node No. 1, and the rangng sgnal s unlocked n the network consequently. Fg. 4 shows the trackng error of the four target nodes. Fg. 4 shows that, when node No. 1 loses synchronzaton at 7 s due to communcaton falure, ts postonng error s suddenly deterorated to a scale of [9.2~12.8] m. Other nodes affected by the nter-rangng error have a about 5-m postonng precson. After about 6 s, by recevng a sgnal-tonose rato (SNR), the RPSC algorthm determnes communcaton falure, deletes the wrong nformaton of the node No. 1. hen, the algorthm contnuously locates the rest nodes whle ncreasng the postonng precson. At 12 s, after reparng the rangng equpment of the node No. 1, the RPSC algorthm tmely utlzes the relatve measurements among the four nodes to accomplsh postonng msson and the postonng precsons of the four nodes are all recovered to the scale before communcaton falure. If by flterng technology to calculate the nodes postons, we may judge the sudden changes of the SWSN nodes wth the sensor fault detecton algorthm accordng to the flterng gan [12]. Fg. 3. rackng error of vrtual centrod wth dfferent postonng algorthms. As shown n able 2 and Fg. 3, at 81s, the trackng error of RPSC s 2.37 m. he trackng accuracy of the RPSC algorthm ncreases by 32.9 % compared to the KF method wth a 1.58 m precson. In order to verfy the processng performance of the RPSC algorthm to deal wth communcaton falure, a communcaton falure s assumed n a 6. Conclusons o mprove the precson and relablty of relatve postonng for the multple targets based on the SWSN, ths paper proposes a relatve postonng method on basc of space constrants by ntroducng a spatal constrant condton to solve ambguty of the relatve postonng due to mssng benchmark. Compared wth the common methods, e.g., Kalman flterng, the proposed RPSC algorthm, whch utlzes graphcal topologcal condtons among target 188
7 Sensors & ransducers, Vol. 158, Issue 11, November 213, pp nodes by ntroducng a spatal constrant benchmarks, can acheve a contnuous trackng of nodes whle SWSN network responds to envronmental sudden change. he relatve postonng accuracy s around 32.9 % and relatve poston devaton s less than 3 m. Fg. 4. rackng error of the four nodes when a communcaton falure happened to No. 1. he RPSC algorthm can respond tmely to communcaton lnk falure. When a node s destroyed, t s able to remove the node, whch ensures the relablty of relatve postonng for the multple targets. It s to note partcularly that we only consder how to mprove the locatng performance from the spatal constrants n ths paper, actually, SWSN also has some statstcal correlaton n the tme doman when the multple targets maneuverng. In the future, we may ntegrate the spatal-doman benchmark wth the tme-doman constrant to enhance the postonng performance for the targets accordng to a pror movement statstcs nformaton. Acknowledgements hs work was supported by the Natonal Scence Foundaton under Grant 61716, by the Natonal Scence Foundaton for Post-doctoral Scentsts of Chna (Grant No , ), by Open Fund of State Key Laboratory of Informaton Engneerng n Surveyng, Mappng and Remote Sensng under Grant 1P3, and by the Start Fund of Laonng Provnce Doctor under Grant References [1]. Y. Jennfer, M. Bswanath, G. Dpak, Wreless sensor network survey, Computer Network, Vol. 52, Issue 12, 28, pp [2]. S. D. Moreno, A. M. Pascoal, J. Aranda, Optmal sensor placement for underwater postonng wth uncertanty n the target locaton, n Proceedng of the IEEE Internatonal Conference on Robotcs and Automaton, Shangha, Chna, 9-13 May 211, pp [3].. ng, L. Jan, Cooperatve postonng n underwater sensor networks, IEEE ransactons on Sgnal Processng, Vol. 58, Issue 11, 21, pp [4]. F. H. He, Z. J. Yu, H.. Lu, Multple target localzaton va compressed sensng n wreless sensor networks, Journal of Electroncs & Informaton echnology, Vol. 34, Issue 3, 212, pp [5]. G. D. John, S. Robn, J. P. Anthony, A threedmensonal postonng algorthm for networked wreless sensors, IEEE ransactons on Instrumentaton and Measurement, Vol. 6, Issue 6, 211, pp [6]. W. H. Lao, Y. C. Lee, S. P. Keda, Moble anchor postonng for wreless sensor networks, IE Communcatons, Vol. 5, Issue 7, 211, pp [7]. R. A. Snger, Estmatng optmal trackng flter performance for manned maneuverng targets, IEEE ransactons on Aerospace and Electronc Systems, Vol. 6, Issue 4, 197, pp [8]. M. Sun, K. C. Ho, An asymptotcally effcent estmator for DOA and FDOA postonng of multple dsjont sources n the presence of sensor locaton uncertantes, IEEE ransactons on Sgnal Processng, Vol. 59, Issue 7, 211, pp [9]. L. Bn, Z. G. Zhang, S. C. Chan, DOA estmaton and trackng of ULAS wth mutual couplng, IEEE ransactons on Aerospace and Electronc Systems, Vol. 48, Issue 1, 212, pp [1]. W. M. u, L. L. Kuang, J. H. Lu, Postonng algorthm wth jont space-tme constrants for unmanned network-flyng vehcles, IEEE ransactons on Geoscence and Remote Sensng, Vol. 47, Issue 8, 29, pp [11].. Z. Cu, Z. C. Yu, B. Z. ao, Generalzed surveyng adjustment, 1 st edton, Wuhan Surveyng & Mappng Unversty Press, Wuhan, 21. [12]. C. M. Hajyev, F. Calskan, Fault detecton n flght control systems based on the generalzed varance of the Kalman flter nnovaton sequence, n Proceedng of the Amercan Control Conference, San Dego, Calforna, USA, 2-4 June 1999, pp Copyrght, Internatonal Frequency Sensor Assocaton (IFSA). All rghts reserved. ( 189
Performance Analysis of Multi User MIMO System with Block-Diagonalization Precoding Scheme
Performance Analyss of Mult User MIMO System wth Block-Dagonalzaton Precodng Scheme Yoon Hyun m and Jn Young m, wanwoon Unversty, Department of Electroncs Convergence Engneerng, Wolgye-Dong, Nowon-Gu,
More informationA New Type of Weighted DV-Hop Algorithm Based on Correction Factor in WSNs
Journal of Communcatons Vol. 9, No. 9, September 2014 A New Type of Weghted DV-Hop Algorthm Based on Correcton Factor n WSNs Yng Wang, Zhy Fang, and Ln Chen Department of Computer scence and technology,
More informationCalculation of the received voltage due to the radiation from multiple co-frequency sources
Rec. ITU-R SM.1271-0 1 RECOMMENDATION ITU-R SM.1271-0 * EFFICIENT SPECTRUM UTILIZATION USING PROBABILISTIC METHODS Rec. ITU-R SM.1271 (1997) The ITU Radocommuncaton Assembly, consderng a) that communcatons
More informationResearch of Dispatching Method in Elevator Group Control System Based on Fuzzy Neural Network. Yufeng Dai a, Yun Du b
2nd Internatonal Conference on Computer Engneerng, Informaton Scence & Applcaton Technology (ICCIA 207) Research of Dspatchng Method n Elevator Group Control System Based on Fuzzy Neural Network Yufeng
More information熊本大学学術リポジトリ. Kumamoto University Repositor
熊本大学学術リポジトリ Kumamoto Unversty Repostor Ttle Wreless LAN Based Indoor Poston and Its Smulaton Author(s) Ktasuka, Teruak; Nakansh, Tsune CtatonIEEE Pacfc RIM Conference on Comm Computers, and Sgnal Processng
More informationStudy of the Improved Location Algorithm Based on Chan and Taylor
Send Orders for eprnts to reprnts@benthamscence.ae 58 The Open Cybernetcs & Systemcs Journal, 05, 9, 58-6 Open Access Study of the Improved Locaton Algorthm Based on Chan and Taylor Lu En-Hua *, Xu Ke-Mng
More informationUncertainty in measurements of power and energy on power networks
Uncertanty n measurements of power and energy on power networks E. Manov, N. Kolev Department of Measurement and Instrumentaton, Techncal Unversty Sofa, bul. Klment Ohrdsk No8, bl., 000 Sofa, Bulgara Tel./fax:
More informationPRACTICAL, COMPUTATION EFFICIENT HIGH-ORDER NEURAL NETWORK FOR ROTATION AND SHIFT INVARIANT PATTERN RECOGNITION. Evgeny Artyomov and Orly Yadid-Pecht
68 Internatonal Journal "Informaton Theores & Applcatons" Vol.11 PRACTICAL, COMPUTATION EFFICIENT HIGH-ORDER NEURAL NETWORK FOR ROTATION AND SHIFT INVARIANT PATTERN RECOGNITION Evgeny Artyomov and Orly
More informationTo: Professor Avitabile Date: February 4, 2003 From: Mechanical Student Subject: Experiment #1 Numerical Methods Using Excel
To: Professor Avtable Date: February 4, 3 From: Mechancal Student Subject:.3 Experment # Numercal Methods Usng Excel Introducton Mcrosoft Excel s a spreadsheet program that can be used for data analyss,
More informationPriority based Dynamic Multiple Robot Path Planning
2nd Internatonal Conference on Autonomous obots and Agents Prorty based Dynamc Multple obot Path Plannng Abstract Taxong Zheng Department of Automaton Chongqng Unversty of Post and Telecommuncaton, Chna
More informationRange-Based Localization in Wireless Networks Using Density-Based Outlier Detection
Wreless Sensor Network, 010,, 807-814 do:10.436/wsn.010.11097 Publshed Onlne November 010 (http://www.scrp.org/journal/wsn) Range-Based Localzaton n Wreless Networks Usng Densty-Based Outler Detecton Abstract
More informationCooperative localization method for multi-robot based on PF-EKF
Scence n Chna Seres F: Informaton Scences 008 SCIENCE IN CHINA PRESS Sprnger www.scchna.com nfo.scchna.com www.sprngerln.com Cooperatve localzaton method for mult-robot based on PF-EKF WANG Lng, WAN JanWe,
More informationAOA Cooperative Position Localization
AOA Cooperatve Poston Localzaton Jun Xu, Maode Ma and Cho Loo Law Postonng and Wreless echnology Centre Nanyang echnologcal Unversty, Sngapore xujun@pmal.ntu.edu.sg Abstract- In wreless sensor networs,
More informationSource Localization by TDOA with Random Sensor Position Errors - Part II: Mobile sensors
Source Localzaton by TDOA wth Random Sensor Poston Errors - Part II: Moble sensors Xaome Qu,, Lhua Xe EXOUISITUS, Center for E-Cty, School of Electrcal and Electronc Engneerng, Nanyang Technologcal Unversty,
More informationDynamic Optimization. Assignment 1. Sasanka Nagavalli January 29, 2013 Robotics Institute Carnegie Mellon University
Dynamc Optmzaton Assgnment 1 Sasanka Nagavall snagaval@andrew.cmu.edu 16-745 January 29, 213 Robotcs Insttute Carnege Mellon Unversty Table of Contents 1. Problem and Approach... 1 2. Optmzaton wthout
More informationRejection of PSK Interference in DS-SS/PSK System Using Adaptive Transversal Filter with Conditional Response Recalculation
SERBIAN JOURNAL OF ELECTRICAL ENGINEERING Vol., No., November 23, 3-9 Rejecton of PSK Interference n DS-SS/PSK System Usng Adaptve Transversal Flter wth Condtonal Response Recalculaton Zorca Nkolć, Bojan
More informationMulti-sensor optimal information fusion Kalman filter with mobile agents in ring sensor networks
Mult-sensor optmal nformaton fuson Kalman flter wth moble agents n rng sensor networs Behrouz Safarneadan *, Kazem asanpoor ** *Shraz Unversty of echnology, safarnead@sutech.ac.r ** Shraz Unversty of echnology,.hasanpor@gmal.com
More informationTopology Control for C-RAN Architecture Based on Complex Network
Topology Control for C-RAN Archtecture Based on Complex Network Zhanun Lu, Yung He, Yunpeng L, Zhaoy L, Ka Dng Chongqng key laboratory of moble communcatons technology Chongqng unversty of post and telecommuncaton
More informationA study of turbo codes for multilevel modulations in Gaussian and mobile channels
A study of turbo codes for multlevel modulatons n Gaussan and moble channels Lamne Sylla and Paul Forter (sylla, forter)@gel.ulaval.ca Department of Electrcal and Computer Engneerng Laval Unversty, Ste-Foy,
More informationParticle Filters. Ioannis Rekleitis
Partcle Flters Ioanns Reklets Bayesan Flter Estmate state x from data Z What s the probablty of the robot beng at x? x could be robot locaton, map nformaton, locatons of targets, etc Z could be sensor
More informationAn Alternation Diffusion LMS Estimation Strategy over Wireless Sensor Network
Progress In Electromagnetcs Research M, Vol. 70, 135 143, 2018 An Alternaton Dffuson LMS Estmaton Strategy over Wreless Sensor Network Ln L * and Donghu L Abstract Ths paper presents a dstrbuted estmaton
More informationA Preliminary Study on Targets Association Algorithm of Radar and AIS Using BP Neural Network
Avalable onlne at www.scencedrect.com Proceda Engneerng 5 (2 44 445 A Prelmnary Study on Targets Assocaton Algorthm of Radar and AIS Usng BP Neural Networ Hu Xaoru a, Ln Changchuan a a Navgaton Insttute
More informationIEE Electronics Letters, vol 34, no 17, August 1998, pp ESTIMATING STARTING POINT OF CONDUCTION OF CMOS GATES
IEE Electroncs Letters, vol 34, no 17, August 1998, pp. 1622-1624. ESTIMATING STARTING POINT OF CONDUCTION OF CMOS GATES A. Chatzgeorgou, S. Nkolads 1 and I. Tsoukalas Computer Scence Department, 1 Department
More informationTime-frequency Analysis Based State Diagnosis of Transformers Windings under the Short-Circuit Shock
Tme-frequency Analyss Based State Dagnoss of Transformers Wndngs under the Short-Crcut Shock YUYING SHAO, ZHUSHI RAO School of Mechancal Engneerng ZHIJIAN JIN Hgh Voltage Lab Shangha Jao Tong Unversty
More informationApproximating User Distributions in WCDMA Networks Using 2-D Gaussian
CCCT 05: INTERNATIONAL CONFERENCE ON COMPUTING, COMMUNICATIONS, AND CONTROL TECHNOLOGIES 1 Approxmatng User Dstrbutons n CDMA Networks Usng 2-D Gaussan Son NGUYEN and Robert AKL Department of Computer
More informationQ-Adaptation of UKF Algorithm for Estimation of the Autonomous Underwater Vehicles Dynamics
Proceedngs of the 5 th Internatonal Conference of Control, Dynamc Systems, and Robotcs (CDSR'8) Nagara Falls, Canada June 7 9, 208 Paper No. 03 DOI: 0.59/cdsr8.03 Q-Adaptaton of UKF Algorthm for Estmaton
More informationANNUAL OF NAVIGATION 11/2006
ANNUAL OF NAVIGATION 11/2006 TOMASZ PRACZYK Naval Unversty of Gdyna A FEEDFORWARD LINEAR NEURAL NETWORK WITH HEBBA SELFORGANIZATION IN RADAR IMAGE COMPRESSION ABSTRACT The artcle presents the applcaton
More informationAn Analytical Method for Centroid Computing and Its Application in Wireless Localization
An Analytcal Method for Centrod Computng and Its Applcaton n Wreless Localzaton Xue Jun L School of Engneerng Auckland Unversty of Technology, New Zealand Emal: xuejun.l@aut.ac.nz Abstract Ths paper presents
More informationMTBF PREDICTION REPORT
MTBF PREDICTION REPORT PRODUCT NAME: BLE112-A-V2 Issued date: 01-23-2015 Rev:1.0 Copyrght@2015 Bluegga Technologes. All rghts reserved. 1 MTBF PREDICTION REPORT... 1 PRODUCT NAME: BLE112-A-V2... 1 1.0
More informationA RF Source Localization and Tracking System
The 010 Mltary Communcatons Conference - Unclassfed Program - Waveforms and Sgnal Processng Track A RF Source Localzaton and Trackng System Wll Tdd, Raymond J. Weber, Ykun Huang Department of Electrcal
More informationA COMPARATIVE STUDY OF DOA ESTIMATION ALGORITHMS WITH APPLICATION TO TRACKING USING KALMAN FILTER
A COMPARATIVE STUDY OF DOA ESTIMATION ALGORITHMS WITH APPLICATION TO TRACKING USING KALMAN FILTER ABSTRACT Venu Madhava M 1, Jagadeesha S N 1, and Yerrswamy T 2 1 Department of Computer Scence and Engneerng,
More informationSubarray adaptive beamforming for reducing the impact of flow noise on sonar performance
Subarray adaptve beamformng for reducng the mpact of flow nose on sonar performance C. Bao 1, J. Leader and J. Pan 1 Defence Scence & Technology Organzaton, Rockngham, WA 6958, Australa School of Mechancal
More informationNATIONAL RADIO ASTRONOMY OBSERVATORY Green Bank, West Virginia SPECTRAL PROCESSOR MEMO NO. 25. MEMORANDUM February 13, 1985
NATONAL RADO ASTRONOMY OBSERVATORY Green Bank, West Vrgna SPECTRAL PROCESSOR MEMO NO. 25 MEMORANDUM February 13, 1985 To: Spectral Processor Group From: R. Fsher Subj: Some Experments wth an nteger FFT
More informationAn Improved Method for GPS-based Network Position Location in Forests 1
Ths full text paper was peer revewed at the drecton of IEEE Communcatons Socety subject matter experts for publcaton n the WCNC 008 proceedngs. An Improved Method for GPS-based Network Poston Locaton n
More informationImpact of Interference Model on Capacity in CDMA Cellular Networks. Robert Akl, D.Sc. Asad Parvez University of North Texas
Impact of Interference Model on Capacty n CDMA Cellular Networks Robert Akl, D.Sc. Asad Parvez Unversty of North Texas Outlne Introducton to CDMA networks Average nterference model Actual nterference model
More informationA Comparison of Two Equivalent Real Formulations for Complex-Valued Linear Systems Part 2: Results
AMERICAN JOURNAL OF UNDERGRADUATE RESEARCH VOL. 1 NO. () A Comparson of Two Equvalent Real Formulatons for Complex-Valued Lnear Systems Part : Results Abnta Munankarmy and Mchael A. Heroux Department of
More informationCompressive Direction Finding Based on Amplitude Comparison
Compressve Drecton Fndng Based on Ampltude Comparson Rumng Yang, Ypeng Lu, Qun Wan and Wanln Yang Department of Electronc Engneerng Unversty of Electronc Scence and Technology of Chna Chengdu, Chna { shan99,
More informationSensors for Motion and Position Measurement
Sensors for Moton and Poston Measurement Introducton An ntegrated manufacturng envronment conssts of 5 elements:- - Machne tools - Inspecton devces - Materal handlng devces - Packagng machnes - Area where
More informationTh P5 13 Elastic Envelope Inversion SUMMARY. J.R. Luo* (Xi'an Jiaotong University), R.S. Wu (UC Santa Cruz) & J.H. Gao (Xi'an Jiaotong University)
-4 June 5 IFEMA Madrd h P5 3 Elastc Envelope Inverson J.R. Luo* (X'an Jaotong Unversty), R.S. Wu (UC Santa Cruz) & J.H. Gao (X'an Jaotong Unversty) SUMMARY We developed the elastc envelope nverson method.
More informationResearch Article Semidefinite Relaxation Algorithm for Multisource Localization Using TDOA Measurements with Range Constraints
Wreless Communcatons and Moble Computng Volume 2018, Artcle ID 9430180, 9 pages https://doorg/101155/2018/9430180 Research Artcle Semdefnte Relaxaton Algorthm for Multsource Localzaton Usng TDOA Measurements
More informationJournal of Chemical and Pharmaceutical Research, 2016, 8(4): Research Article
Avalable onlne www.ocpr.com Journal of Chemcal and Pharmaceutcal Research, 2016, 8(4):788-793 Research Artcle ISSN : 0975-7384 CODEN(USA) : JCPRC5 Vrtual Force Coverage Enhancement Optmzaton Algorthm Based
More informationHigh Speed ADC Sampling Transients
Hgh Speed ADC Samplng Transents Doug Stuetzle Hgh speed analog to dgtal converters (ADCs) are, at the analog sgnal nterface, track and hold devces. As such, they nclude samplng capactors and samplng swtches.
More informationAn Improved Weighted Centroid Localization Algorithm
Internatonal Journal of Future Generaton Communcaton an Networng Vol.6, No.5 (203), pp.45-52 http://x.o.org/0.4257/fgcn.203.6.5.05 An Improve Weghte Centro Localzaton Algorthm L Bn, Dou Zheng*, Nng Yu
More informationRECOMMENDATION ITU-R P Multipath propagation and parameterization of its characteristics
Rec. ITU-R P.47-3 RECOMMEDATIO ITU-R P.47-3 Multpath propagaton and parameterzaton of ts characterstcs (Queston ITU-R 3/3) (999-3-5-7) Scope Recommendaton ITU-R P.47 descrbes the nature of multpath propagaton
More informationPerformance Testing of the Rockwell PLGR+ 96 P/Y Code GPS receiver
Performance Testng of the Rockwell PLGR+ 96 P/Y Code GPS recever By Santago Mancebo and Ken Chamberlan Introducton: The Rockwell PLGR (Precson Lghtweght GPS Recever) + 96 s a Precse Postonng Servce P/Y
More informationOn Sensor Fusion in the Presence of Packet-dropping Communication Channels
On Sensor Fuson n the Presence of Packet-droppng Communcaton Channels Vjay Gupta, Babak Hassb, Rchard M Murray Abstract In ths paper we look at the problem of multsensor data fuson when data s beng communcated
More informationSmall Range High Precision Positioning Algorithm Based on Improved Sinc Interpolation
Small Range Hgh Precson Postonng Algorm Based on Improved Snc Interpolaton Zhengpng L, Chaolang Qn, Yongme Zhang, L a, and Changlu Nu Abstract Ths paper desgned an mproved postonng system whch employed
More informationsensors ISSN by MDPI
Sensors 2007, 7, 628-648 Full Paper sensors ISSN 1424-8220 2007 by MDPI www.mdp.org/sensors Dstrbuted Partcle Swarm Optmzaton and Smulated Annealng for Energy-effcent Coverage n Wreless Sensor Networks
More informationAdaptive Modulation for Multiple Antenna Channels
Adaptve Modulaton for Multple Antenna Channels June Chul Roh and Bhaskar D. Rao Department of Electrcal and Computer Engneerng Unversty of Calforna, San Dego La Jolla, CA 993-7 E-mal: jroh@ece.ucsd.edu,
More informationModeling Power Angle Spectrum and Antenna Pattern Directions in Multipath Propagation Environment
Modelng ower Angle Spectrum and Antenna attern Drectons n Multpath ropagaton Envronment Jan M Kelner and Cezary Zółkowsk Insttute of elecommuncatons, Faculty of Electroncs, Mltary Unversty of echnology,
More informationThis is a repository copy of AN ADAPTIVE LOCALIZATION SYSTEM USING PARTICLE SWARM OPTIMIZATION IN A CIRCULAR DISTRIBUTION FORM.
hs s a repostory copy of AN ADAPIVE LOCALIZAION SYSEM USING PARICLE SWARM OPIMIZAION IN A CIRCULAR DISRIBUION FORM. Whte Rose Research Onlne URL for ths paper: http://eprnts.whterose.ac.uk/118699/ Verson:
More informationThe Performance Improvement of BASK System for Giga-Bit MODEM Using the Fuzzy System
Int. J. Communcatons, Network and System Scences, 10, 3, 1-5 do:10.36/jcns.10.358 Publshed Onlne May 10 (http://www.scrp.org/journal/jcns/) The Performance Improvement of BASK System for Gga-Bt MODEM Usng
More informationMulti-hop-based Monte Carlo Localization for Mobile Sensor Networks
Mult-hop-based Monte Carlo Localzaton for Moble Sensor Networks Jyoung Y, Sungwon Yang and Hojung Cha Department of Computer Scence, Yonse Unversty Seodaemun-gu, Shnchon-dong 34, Seoul 20-749, Korea {jyy,
More informationOn the Feasibility of Receive Collaboration in Wireless Sensor Networks
On the Feasblty of Receve Collaboraton n Wreless Sensor Networs B. Bantaleb, S. Sgg and M. Begl Computer Scence Department Insttute of Operatng System and Computer Networs (IBR) Braunschweg, Germany {behnam,
More informationComparative Analysis of Reuse 1 and 3 in Cellular Network Based On SIR Distribution and Rate
Comparatve Analyss of Reuse and 3 n ular Network Based On IR Dstrbuton and Rate Chandra Thapa M.Tech. II, DEC V College of Engneerng & Technology R.V.. Nagar, Chttoor-5727, A.P. Inda Emal: chandra2thapa@gmal.com
More informationDetection and Mitigation of GPS Spoofing Based on Antenna Array Processing
Detecton and Mtgaton of GPS Spoofng Based on Antenna Array Processng J. Magera* and R. Katulsk Department of Rado Communcatons Systems and Networks Gdansk Unversty of Technology Gdansk, Poland *radokom@et.pg.gda.pl
More informationA New Algorithm for Calibration of Radar Biases Based on ADS-B
A New Algorthm for Calbraton of Radar Bases Based on ADS-B 1 Wuzhenya, 2 Huangzhujan, 3 Hujun, 4 Yangchangq 1,4 College of Computer Scence, Schuan Unversty, Chengdu, 610065, Chna,4012394@qq.com 2 Chengdu
More informationsensors ISSN
Sensors,, 8-97; do:.339/s8 OPEN ACCESS sensors ISSN 44-8 www.mdp.com/ournal/sensors Artcle Extended Target Recognton n Cogntve Radar Networks Ymn We, uadong Meng *, Ymn Lu and Xqn Wang Department of Electronc
More informationResearch on Peak-detection Algorithm for High-precision Demodulation System of Fiber Bragg Grating
, pp. 337-344 http://dx.do.org/10.1457/jht.014.7.6.9 Research on Peak-detecton Algorthm for Hgh-precson Demodulaton System of Fber ragg Gratng Peng Wang 1, *, Xu Han 1, Smn Guan 1, Hong Zhao and Mngle
More informationUSE OF GPS MULTICORRELATOR RECEIVERS FOR MULTIPATH PARAMETERS ESTIMATION
Rdha CHAGGARA, TeSA Chrstophe MACABIAU, ENAC Erc CHATRE, STNA USE OF GPS MULTICORRELATOR RECEIVERS FOR MULTIPATH PARAMETERS ESTIMATION ABSTRACT The performance of GPS may be degraded by many perturbatons
More informationDesensitized Kalman Filtering with Analytical Gain
Desenstzed Kalman Flterng wth Analytcal Gan ashan Lou School of Electrc and Informaton Engneerng, Zhengzhou Unversty of Lght Industry, Zhengzhou, 45002, Chna, tayzan@sna.com Abstract: he possble methodologes
More informationA Current Differential Line Protection Using a Synchronous Reference Frame Approach
A Current Dfferental Lne rotecton Usng a Synchronous Reference Frame Approach L. Sousa Martns *, Carlos Fortunato *, and V.Fernão res * * Escola Sup. Tecnologa Setúbal / Inst. oltécnco Setúbal, Setúbal,
More informationEfficient Large Integers Arithmetic by Adopting Squaring and Complement Recoding Techniques
The th Worshop on Combnatoral Mathematcs and Computaton Theory Effcent Large Integers Arthmetc by Adoptng Squarng and Complement Recodng Technques Cha-Long Wu*, Der-Chyuan Lou, and Te-Jen Chang *Department
More informationChaotic Filter Bank for Computer Cryptography
Chaotc Flter Bank for Computer Cryptography Bngo Wng-uen Lng Telephone: 44 () 784894 Fax: 44 () 784893 Emal: HTwng-kuen.lng@kcl.ac.ukTH Department of Electronc Engneerng, Dvson of Engneerng, ng s College
More informationPrediction-based Interacting Multiple Model Estimation Algorithm for Target Tracking with Large Sampling Periods
44 Internatonal Jon Ha Journal Ryu, Du of Hee Control, Han, Automaton, Kyun Kyung and Lee, Systems, and Tae vol. Lyul 6, Song no., pp. 44-53, February 8 Predcton-based Interactng Multple Model Estmaton
More informationGPS Attitude Determination Reliability Performance Improvement Using Low Cost Receivers
Journal of Global Postonng Systems (22) Vol. 1, No. 2: 85-95 GPS Atttude Determnaton Relablty Performance Improvement Usng Low Cost Recevers Chaochao Wang and Gérard Lachapelle Department of Geomatcs Engneerng,
More informationPerformance Analysis of the Weighted Window CFAR Algorithms
Performance Analyss of the Weghted Wndow CFAR Algorthms eng Xangwe Guan Jan He You Department of Electronc Engneerng, Naval Aeronautcal Engneerng Academy, Er a road 88, Yanta Cty 6400, Shandong Provnce,
More informationPassive Filters. References: Barbow (pp ), Hayes & Horowitz (pp 32-60), Rizzoni (Chap. 6)
Passve Flters eferences: Barbow (pp 6575), Hayes & Horowtz (pp 360), zzon (Chap. 6) Frequencyselectve or flter crcuts pass to the output only those nput sgnals that are n a desred range of frequences (called
More informationMovement - Assisted Sensor Deployment
Intro Self Deploy Vrtual Movement Performance Concluson Movement - Asssted Sensor Deployment G. Wang, G. Cao, T. La Porta Dego Cammarano Laurea Magstrale n Informatca Facoltà d Ingegnera dell Informazone,
More informationHigh Speed, Low Power And Area Efficient Carry-Select Adder
Internatonal Journal of Scence, Engneerng and Technology Research (IJSETR), Volume 5, Issue 3, March 2016 Hgh Speed, Low Power And Area Effcent Carry-Select Adder Nelant Harsh M.tech.VLSI Desgn Electroncs
More informationlocation-awareness of mobile wireless systems in indoor areas, which require accurate
To my wfe Abstract Recently, there are great nterests n the locaton-based applcatons and the locaton-awareness of moble wreless systems n ndoor areas, whch requre accurate locaton estmaton n ndoor envronments.
More informationRelevance of Energy Efficiency Gain in Massive MIMO Wireless Network
Relevance of Energy Effcency Gan n Massve MIMO Wreless Network Ahmed Alzahran, Vjey Thayananthan, Muhammad Shuab Quresh Computer Scence Department, Faculty of Computng and Informaton Technology Kng Abdulazz
More informationImproved Detection Performance of Cognitive Radio Networks in AWGN and Rayleigh Fading Environments
Improved Detecton Performance of Cogntve Rado Networks n AWGN and Raylegh Fadng Envronments Yng Loong Lee 1, Wasan Kadhm Saad, Ayman Abd El-Saleh *1,, Mahamod Ismal 1 Faculty of Engneerng Multmeda Unversty
More informationOpen Access Node Localization Method for Wireless Sensor Networks Based on Hybrid Optimization of Differential Evolution and Particle Swarm Algorithm
Send Orders for Reprnts to reprnts@benthamscence.ae The Open Automaton and Control Systems Journal, 014, 6, 61-68 61 Open Access Node Localzaton Method for Wreless Sensor Networks Based on Hybrd Optmzaton
More informationantenna antenna (4.139)
.6.6 The Lmts of Usable Input Levels for LNAs The sgnal voltage level delvered to the nput of an LNA from the antenna may vary n a very wde nterval, from very weak sgnals comparable to the nose level,
More informationMicro-grid Inverter Parallel Droop Control Method for Improving Dynamic Properties and the Effect of Power Sharing
2015 AASRI Internatonal Conference on Industral Electroncs and Applcatons (IEA 2015) Mcro-grd Inverter Parallel Droop Control Method for Improvng Dynamc Propertes and the Effect of Power Sharng aohong
More informationLow Sampling Rate Technology for UHF Partial Discharge Signals Based on Sparse Vector Recovery
017 nd Internatonal Semnar on Appled Physcs, Optoelectroncs and Photoncs (APOP 017) ISBN: 978-1-60595-5-3 Low Samplng Rate Technology for UHF Partal Dscharge Sgnals Based on Sparse Vector Recovery Qang
More informationUtility-based Routing
Utlty-based Routng Je Wu Dept. of Computer and Informaton Scences Temple Unversty Roadmap Introducton Why Another Routng Scheme Utlty-Based Routng Implementatons Extensons Some Fnal Thoughts 2 . Introducton
More informationCentralized approach for multi-node localization and identification
Centralzed approach for mult-node localzaton and dentfcaton Ola A. Hasan Electrcal Engneerng Department Unversty of Basrah Basrah, Iraq Lolastar91@gmal.com Ramzy S. Al Electrcal Engneerng Department Unversty
More informationParameter Free Iterative Decoding Metrics for Non-Coherent Orthogonal Modulation
1 Parameter Free Iteratve Decodng Metrcs for Non-Coherent Orthogonal Modulaton Albert Gullén Fàbregas and Alex Grant Abstract We study decoder metrcs suted for teratve decodng of non-coherently detected
More informationA NSGA-II algorithm to solve a bi-objective optimization of the redundancy allocation problem for series-parallel systems
0 nd Internatonal Conference on Industral Technology and Management (ICITM 0) IPCSIT vol. 49 (0) (0) IACSIT Press, Sngapore DOI: 0.776/IPCSIT.0.V49.8 A NSGA-II algorthm to solve a b-obectve optmzaton of
More informationPoint Real-Time Kinematic Positioning
Pont Real-Tme Knematc Postonng Y. Gao, M. Abdel-Salam, K. Chen and A. Wojcechowsk Department of Geomatcs Engneerng 5 Unversty Drve N.W., Calgary, Alberta, Canada TN N4 Abstract. Autonomous pont postonng
More informationPost Mission Trajectory Smoothing for the Isurus AUV
Post Msson Trajectory Smoothng for the Isurus AUV Aníbal Matos, Nuno Cruz and Fernando Lobo Perera Faculdade de ngenhara da Unversdade do Porto Insttuto de Sstemas e Robótca R. Dr. Roberto Fras 4-465 Porto
More informationThe Impact of Spectrum Sensing Frequency and Packet- Loading Scheme on Multimedia Transmission over Cognitive Radio Networks
Ths artcle has been accepted for publcaton n a future ssue of ths journal, but has not been fully edted. Content may change pror to fnal publcaton. The Impact of Spectrum Sensng Frequency and Pacet- Loadng
More informationAn efficient cluster-based power saving scheme for wireless sensor networks
RESEARCH Open Access An effcent cluster-based power savng scheme for wreless sensor networks Jau-Yang Chang * and Pe-Hao Ju Abstract In ths artcle, effcent power savng scheme and correspondng algorthm
More informationMDS-based Algorithm for Nodes Localization in 3D Surface Sensor Networks
MDS-based Algorthm for odes Localzaton n 3D Surface Sensor etworks Bljana Rsteska Stojkoska, Danco Davcev Faculty of Computer Scence and Engneerng Unversty Ss. Cyrl and Methodus Skopje, Macedona bljana.stojkoska@fnk.ukm.mk,
More informationPower System State Estimation Using Phasor Measurement Units
Unversty of Kentucky UKnowledge Theses and Dssertatons--Electrcal and Computer Engneerng Electrcal and Computer Engneerng 213 Power System State Estmaton Usng Phasor Measurement Unts Jaxong Chen Unversty
More informationAn Energy-aware Awakening Routing Algorithm in Heterogeneous Sensor Networks
An Energy-aware Awakenng Routng Algorthm n Heterogeneous Sensor Networks TAO Dan 1, CHEN Houjn 1, SUN Yan 2, CEN Ygang 3 1. School of Electronc and Informaton Engneerng, Bejng Jaotong Unversty, Bejng,
More informationIn-system Jitter Measurement Based on Blind Oversampling Data Recovery
RADIOENGINEERING, VOL. 1, NO. 1, APRIL 01 403 In-system Jtter Measurement Based on Blnd Oversamplng Data Recovery Mchal KUBÍČEK, Zdeněk KOLKA Dept. of Rado Electroncs, Brno Unversty of Technology, Purkyňova
More informationAn Improved Localization Scheme Based on DV-Hop for Large-Scale Wireless Sensor Networks
Journal of Communcatons Vol., o., December 06 n Improved Localzaton Scheme Based on DV-Hop for Large-Scale Wreless Sensor etworks Janpng Zhu, Chunfeng Lv, and Zhengsu Tao SOU College of Engneerng Scence
More informationEnhancement for Φ-OTDR Performance by Using Narrow Linewidth Light Source and Signal Processing
PHOTONIC SENSORS / Vol. 6, No. 1, 016: 58 6 Enhancement for Φ-OTDR Performance by Usng Narrow Lnewdth Lght Source and Sgnal Processng Meng ZHANG 1, Song WANG *, Yuanwe ZHENG 1, Yao YANG 1, Xngje SA 1,
More informationWalsh Function Based Synthesis Method of PWM Pattern for Full-Bridge Inverter
Walsh Functon Based Synthess Method of PWM Pattern for Full-Brdge Inverter Sej Kondo and Krt Choesa Nagaoka Unversty of Technology 63-, Kamtomoka-cho, Nagaoka 9-, JAPAN Fax: +8-58-7-95, Phone: +8-58-7-957
More informationAN EFFICIENT ITERATIVE DFT-BASED CHANNEL ESTIMATION FOR MIMO-OFDM SYSTEMS ON MULTIPATH CHANNELS
AN FFICINT ITRATIV DFT-BASD CHANNL STIMATION FOR MIMO-OFDM SYSTMS ON MULTIPATH CHANNLS Jan Hafang Graduate Unversty of the Chnese Academy of Scences Insttute of Semconductors, CAS Beng, Chna hf@sem.ac.cn
More informationResource Allocation Optimization for Device-to- Device Communication Underlaying Cellular Networks
Resource Allocaton Optmzaton for Devce-to- Devce Communcaton Underlayng Cellular Networks Bn Wang, L Chen, Xaohang Chen, Xn Zhang, and Dacheng Yang Wreless Theores and Technologes (WT&T) Bejng Unversty
More informationA High-Sensitivity Oversampling Digital Signal Detection Technique for CMOS Image Sensors Using Non-destructive Intermediate High-Speed Readout Mode
A Hgh-Senstvty Oversamplng Dgtal Sgnal Detecton Technque for CMOS Image Sensors Usng Non-destructve Intermedate Hgh-Speed Readout Mode Shoj Kawahto*, Nobuhro Kawa** and Yoshak Tadokoro** *Research Insttute
More informationFigure.1. Basic model of an impedance source converter JCHPS Special Issue 12: August Page 13
A Hgh Gan DC - DC Converter wth Soft Swtchng and Power actor Correcton for Renewable Energy Applcaton T. Selvakumaran* and. Svachdambaranathan Department of EEE, Sathyabama Unversty, Chenna, Inda. *Correspondng
More informationMulti-Robot Map-Merging-Free Connectivity-Based Positioning and Tethering in Unknown Environments
Mult-Robot Map-Mergng-Free Connectvty-Based Postonng and Tetherng n Unknown Envronments Somchaya Lemhetcharat and Manuela Veloso February 16, 2012 Abstract We consder a set of statc towers out of communcaton
More informationG. Taylor, C. Brunsdon, J. Li, A. Olden, D. Steup and M. Winter
Geonformatcs 2004 Proc. 12th Int. Conf. on Geonformatcs Geospatal Informaton Research: Brdgng the Pacfc and Atlantc Unversty of Gävle, Sweden, 7-9 June 2004 A TEST-BED SIMULATOR FOR GPS AND GIS INTEGRATED
More informationResearch on detection system of heat faults based on multi-sensor information fusion
Avalable onlne www.jocpr.com Journal of Chemcal and Pharmaceutcal Research, 204, 6(4):36-4 Research Artcle ISSN : 0975-7384 CODEN(USA) : JCPRC5 Research on detecton system of heat faults based on mult-sensor
More informationPower Minimization Under Constant Throughput Constraint in Wireless Networks with Beamforming
Power Mnmzaton Under Constant Throughput Constrant n Wreless etworks wth Beamformng Zhu Han and K.J. Ray Lu, Electrcal and Computer Engneer Department, Unversty of Maryland, College Park. Abstract In mult-access
More information