Overview of the inter-orbit and orbit-to-ground laser communication demonstration by OICETS
|
|
- Spencer Osborne
- 6 years ago
- Views:
Transcription
1 Overview of the inter-orbit and orbit-to-ground laser communication demonstration by OICETS Takashi Jono *a, Yoshihisa Takayama a, Koichi Shiratama b, Ichiro Mase b, Benoit Demelenne c, Zoran Sodnik d, Aneurin Bird d, Morio Toyoshima e, Hiroo Kunimori e, Dirk Giggenbach f, Nicolas Perlot f, Markus Knapek f and Katsuyoshi Arai a a Japan Aerospace Exploration Agency, Tsukuba, Ibaraki, Japan b NEC TOSHIBA Space Systems. Ltd, Fuchu, Tokyo, Japan c ESA, Station de Redu, Redu, Belgium d ESA, European Space Technology Center, Noordwjk, The Netherlands e National Institute of Information and Communications Technology, Koganei, Tokyo, Japan f German Aerospace Center, Oberpfaffenhofen, Wessling, Germany Keywords: OICETS, KIRARI, ARTEMIS, free-space laser communication ABSTRACT The experiment results on the inter-orbit laser communications between OICETS and a geostationary satellite and the results of two kinds of orbit-to-ground laser communications between OICETS and ground stations are summarized. The geostationary satellite for the inter-orbit demonstrations is the European Space Agency's geostationary satellite, ARTEMIS, and the ground stations for the orbit-to-ground demonstrations are of the National Institute of Information, and Communications Technology (NICT) in Japan and the German Aerospace Center (DLR), respectively. The descriptions of those experiments contain some statistically analyzed results as well as data samples measured during the demonstrations. The authors present the overview of these demonstration progresses and discuss on the results. 1. INTRODUCTION The Optical Inter-orbit Communication Engineering Test Satellite (OICETS, Japanese name KIRARI ) was developed by the Japan Aerospace Exploration Agency (JAXA) [1-2] and was launched into low earth sun-synchronous orbit at an altitude of 610 km and an inclination of 97.8 degree on 23 August A main objective of OICETS was to demonstrate the free-space inter-orbit laser communications by using a laser communications terminal called the Laser Utilizing Communications Equipment (LUCE). Its additional objective was the demonstration of orbit-to-ground laser communications. The inter-orbit demonstration was planned with the cooperation of the Geostationary Earth Orbit (GEO) satellite, the Advanced Data Relay Technology Mission (ARTEMIS) developed by the European Space Agency (ESA) [3-4]. Moreover, a Low Earth Orbit (LEO) to ground laser communication demonstration was planned with the cooperation of the two Optical Ground Stations (OGS) developed by the National Institute of Information and Communications Technology (NICT) in Japan and the German Aerospace Center (DLR), respectively. Functional verifications of the satellite bus system and LUCE were conducted for about 3 months after launch. During the verification campaign, the basic functions of LUCE were verified, and an acquisition and tracking sequences and optical sensors were then verified by tracking stars such as Sirius and the Mars. On 9 December 2005, the first bidirectional laser communications link between OICETS and ARTEMIS was successfully established [5]. The inter-orbit laser communication demonstration was successfully conducted over a period of six months since December We conducted more than 100 inter-orbit experiments. Acquisition sequences, tracking performance and bit error characteristics were measured and evaluated. These results show more than 90 % probability of acquisition and less than 10-6 bit error rate. The orbit-to-ground trials with NICT were performed in the end of March and May The first reception of the downlink data at the ground station was observed on 28 March at the bit error rate of 10-5 [6-8]. During the experiment period, the optical link was successfully established repeatedly. The month of June 2006 was the period for the orbit-to- * jyono.takashi@jaxa.jp
2 LUCE-O Electrical part Optical part Flight direction (+X axis) (+Y axis) S-band antenna To the earth (+Z axis) Fig.1 In-orbit satellite configuration of OICETS. Fig. 2 Overview of the LUCE. ground demonstrations with DLR. The ground station recorded the bit error rate of 10-6 on the reception of the downlink data [9]. September was given to the trials with NICT again. The ground station and OICETS performed proper acquisition and tracking, and OICETS finally received the uplink data at the bit error rate of 10-7 on 19 September In this paper, we present descriptions of the in-orbit experiment, results of the in-orbit laser communications experiment between OICETS and ARTEMIS, and orbit-to-ground laser communication conducted with the NICT OGS and DLR OGS. 2. DESCRIPTIONS OF IN-ORBIT EXPERIMENTS OICETS is a relatively small satellite with a mass of approximately 570 kg. OICETS orbit for the experiment is a circular orbit with a height of about 610 km and an inclination of 97.8 degrees. LUCE consists of two parts; the optical and electrical parts. The optical part includes a telescope mounted on two axes gimbals. The electrical part provides functions to control the acquisition, tracking and pointing mechanisms as well as the communication electronics. Fig. 1 shows in-orbit satellite configurations, and Fig. 2 shows an overview of the LUCE s optical and electrical parts. The optical antenna has a diameter of 26 cm and is categorized as a center-feed Cassegrain mirror-type telescope. Planned in-orbit demonstration and experiments were performed by international cooperation. Entire in-orbit experiments and operation systems consist of a JAXA s OICETS satellite on low earth orbit, ESA s ARTEMIS satellite on geostationary orbit, NICT s optical ground station located in Tokyo, Japan and DLR s optical ground station located in Oberpfaffenhofen, Germany and some satellite operation facilities. Fig. 3 shows a schematic drawing of the whole system and facilities. KODEN (Kirari Optical Communication Demonstration Experiments with the NICT optical ground station) and KIODO (KIrari s Optical Downlink to Oberpfaffenhofen) are the project names of orbit-to-ground station experiment, respectively. The Laser communication scheme of OICETS is based on the ESA s SILEX system. Intensity modulation, or On-Off Keying (OOK) and direct detection system are used. The forward link from ARTEMIS to OICETS uses 2 Pulse Position Modulation (2PPM) format at M bits/sec while the return link from OICETS to ARTEMIS uses the Non-Returnto-Zero (NRZ) format at Mbits/sec. The uplink, ground station to OICETS, uses the same format and bit rate as the one used for the forward link scheme while the downlink from OICETS to a ground station uses the same format and bit rate as the one used for the return link scheme. Wavelength, transmitted power and other characteristics of the laser communications terminals are listed in Table 1.
3 Laser terminal, satellite orbit or station location Wavelength Polarization Telescope diameter Table 1 Characteristics of the laser communications terminals. ARTEMIS DLR OGS 21.5 deg. East, Oberpfaffenhofen, geosynchronous Germany earth orbit OICETS height of 600 km, low earth orbit Communication: 847nm Beacon:801nm Communication: 819nm Beacon:808nm NICT OGS Koganei, Tokyo, Japan Beacon:808nm Communication: 815nm LHCP LHCP Random LHCP or random 0.26m 0.25m 0.40m Transmisson:1.5m Receiving:0.20m or 1.5m Stars Ka-band link Telemetry/command ARTEMIS Operation Control Center (Italy) ARTEMIS Ka-band link Mission data ESA Redu station (Belgium) 2Mbps Optical link 50 Mbps OICETS Alignment calibration 50 Mbps Optical link 2Mbps S-band link Telemetry /command 50 Mbps /mission data DLR optical ground station (Germany) NICT optical ground station (Japan) Mission plan 2 Mbps In-orbit test equipment 50 Mbps ARTEMIS mission data ARTEMIS mission control facility JAXA Tracking stations Mission data Real time data Orbit prediction data JAXA Tsukuba space center (Japan) OICETS operation control facility OICETS mission control facility Flight dynamics facility Mission data Orbit prediction data 3. RESULTS OF THE OICETS-ARTEMIS INTER-ORBIT EXPERIMENT 3.1 Over view of the inter-orbit experiment The experiment campaign consists of three phases as described below. - Commissioning phase: To establish inter-orbit laser communication link establishment, to verify the modulation function and the error counting function, and to confirm interoperability between JAXA and ESA space network operation systems. - Experiment phase: To evaluate the beam pointing characteristics and acquisition and tracking characteristics under various special conditions. - Routine phase: To demonstrate and evaluate an operational link in a condition of normal setup of both satellites. Fig. 3 In-orbit experiment and operation system.
4 The commissioning phase was started on 5 December We carried out the commissioning phase for 2 weeks, the experiment phase for 2months and the routine phase for 5 months. All of the experiments were completed on 10 August Table 2 shows a summary of the OICETS-ARTEMIS inter-orbit experiments. One hundred experiments were succeeded in acquisition and tracking during the experiment campaign. Table 2 Overview of the OICETS-ARTEMIS experiment. Phase Configuration Succeeded Failed Commissioning Normal 7 0 Normal 64 2 OICETS Beam pointing (for calibration of pointing bias) 9 1 ARTEMIS Beam pointing (for OICETS optical receiver characteristics) 2 0 Experiment and routine LUCE operable minimum(15mw) received irradiance for tracking 2 0 Tracking and communication characteristics under the interference moon and sun light 3 0 Evaluation of the atmospheric effects on the tracking performance 3 2 Repeater communication mode 2 0 OICETS no calibration 8 1 Total Beam pointing experiment This experiment means a calibration of pointing bias of OICETS transmitting laser beam. Methods of the experiment were as follows: - ARTEMIS and OICETS established the optical communications link. - OICETS changed the beam direction by adding offsets to the point-ahead angle. The added angle sequence followed a spiral pattern. - The received power on ARTEMIS were measured and post-processed in order to recover the OICETS transmitted intensity. - A beam profile of OICETS was processed from the adding angle, and a bias pointing error was estimated. We conducted this experiment 9 times. Fig. 4 shows a beam profile which was the first data measured on 19 December Fig. 4 Transmitted laser Beam profile of OICETS measured on 19th December Fig. 5 Transmitted laser Beam profile of OICETS measured on 26th January 2006 after bias error calibration.
5 2005. The pointing bias error was estimated of about 3 micro radians from the experiment result. Fig. 5 shows a beam profile after the calibration of pointing bias. It measured on 26 January 2006, and added calibration angels were 2.5 micro radians in X-axis and 1.8 micro radians in Y-axis, respectively. 3.3 Tracking performance An acquisition sequence design is very important to succeed in acquiring incoming laser beam. The acquisition sequence between OICETS and ARTEMIS was started by the ARTEMIS beacon beam scanning. The fine pointing sensor error of X and Y axes and the fine pointing sensor level (received power) of OICETS are shown in Fig. 6. These data are obtained from an in-orbit experiment performed on 9 February The figure indicates that the fine pointing mechanisms worked properly. There was a sharp increase in the fine pointing sensor level after the initial acquisition. This indicates that ARTEMIS started to transmit the communication beam. Overall duration of acquisition sequence with both terminals was about 33 seconds in this experiment. The fine pointing error means OICETS tacking error. In this case, three sigma value of the tracking error during whole tracking was at about 0.3 micro radians. Fig. 7 shows three sigma value of the tracking error of each in 80 executed experiments during the routine phase. These tracking errors were less than 0.4 micro radians. 3.4 Communication performance OICETS transmitted a Pseudo-random Noise (PN) code data stream to ARTEMIS by using the optical link. The data stream received by ARTEMIS was converted to electrical signal and transmitted through downlink to an ESA s ground station in Redu, Belgium, via a Ka-band radio frequency feeder link of ARTEMIS. The bit error of the return link was measured in the Redu station. For the forward link, the PN code data stream was transmitted in the Redu station The data stream passed through the Ka-band feeder link, ARTEMIS and the optical link. OICETS was equipped with a bit σtracking error (μ rad ) Apr-06 1-May May Jun Jul Aug-06 Date OICETS tracks communication beam Fig. 7 Three sigma value of the tracking error of each in 80 execution experiment in routine phase OICETS tracks beacon beam from ARTEMIS Fig. 6 The fine pointing sensor error of X, Y axis and the fine pointing sensor level in initial acquisition and tracking phase. error counter to measure the bit error of the forward link. The Bit Error Rate (BER) performances in 80 executed experiments during the routine phase are shown in Fig. 8. Both optical links achieved the bit error rate at less than 10-6.
6 1.E-02 1.E-03 1.E-04 Return Link Forward Link 1.E-05 BER 1.E-06 1.E-07 1.E-08 1.E-09 1.E-10 06/04/01 06/05/01 06/05/31 06/06/30 06/07/30 06/08/2 Date Fig. 8 Bit Error Rate (BER) performances of each in 80 execution experiment in routine phase. 4. ORBIT-TO-GROUND EXPERIMENT 4.1 Description of the orbit-to-ground experiment The OICETS satellite system design was based for the inter-orbit communication. The LUCE optical part attached to the anti-earth side of the satellite body to point toward the geostationary earth orbit satellite ARTEMIS. An attitude control system of the OICETS has two modes. The normal mode is a three-stabilized attitude control mode. The other is the Inertia Reference Mode (IRM) which is an inverted attitude configuration. In the IRM mode, its attitude is fixed at an inertia space, and the LUCE optical part is, thus, able to point toward a ground station. Fig. 9 shows an in-orbit configuration in the IRM mode for the orbit-to-ground experiment. There were some critical matters for performing the experiment with ground station compared to the experiment with ARTEMIS. The visible time from the ground station in the experiment lasted for only about 3 to 10 minutes. Relative distance was changed from 600km to 1500km during a pass. Transmitting beam divergence angle of LUCE is only about 5 micro radians. Therefore, when distance is about 1000km, LUCE has to keep pointing to a ground station within the limits of 5m spot approximately. Tracking or pointing angular velocity of LUCE is twice to 3 times as fast as the experiment with ARTEMIS. Moreover, atmospheric turbulence between the satellite and a ground station affects the laser links. 4.2 Results of the KODEN experiment KODEN is orbit-to-ground experiment with the NICT optical ground station located in Tokyo, Japan. We tried the experiment 18 times. The experiment carried out in the midnight. The success rate with respect to acquisition and tracking of each terminal was about 61%. However, the link establishments were succeeded every trial for sure under the clear-sky condition. Table 3 shows a summary of the KODEN experiment campaign. Fig. 10 and Fig 11 shows the coarse pointing sensor error, fine pointing sensor error and fine pointing sensor received power level of OICETS on 5 September Fig 10 plots the error angle during tracking for about 230 seconds after the initial acquisition. The fine pointing sensor level was saturated in the initial tracking since the NICT ground station
7 transmitted a beacon and communication beam in the initial acquisition and tracking phase during 50 seconds in this experiment case. We tried the bidirectional communication in the KODEN experiment. The PN data streams were used for the bit error count measurement. Fig. 12 and 13 shows the BER of the down and uplink respectively on 19th September Each BER data was calculated by the second. In Fig 12, the BER exceeding 1E-02 means that the optical receiver did not synchronize the modulated beam. The BER were changed suddenly because the laser power output from the ground station was changed in order to find out optimal emission power for a proper bit eye pattern. Trial Number Table 3 Summary of the KODEN experiment campaign. Experiment Date in 2006 Weather condition Link establishment (acquisition and tracking each terminal) 1st March 21st Clear sky Success 2nd March 2nd Cloudy No link 3rd March 28th Clear sky Success 4th March 30th Partly cloudy Success 5th May 9th Rainy No link 6th May 11th Partly cloudy Success 7th May 16th Cloudy Success 8th May 18th Rainy No link 9th May 23rd Partly cloudy Success 10th May 25th Partly cloudy Success 11th September 5th Clear sky Success 12th September 7th Partly cloudy Success 13th September 12th Rainy No link 14th September 14th Rainy No link 15th September 19th Clear sky Success 16th September 21st Clear sky Success 17th September 26th Rainy No link 18th September 28th Rainy No link 4.3 Results of the KIODO experiment The KIODO experiment was conducted with the DLR optical ground station located in Oberpfaffenhofen, Germany. The experiment was conducted 8 times in June The experiments were carried out in midnight. Table 4 shows a summary of the KIODO experiment campaign. The link establishments were succeeded under the clear-sky condition. Fig. 14 shows the fine pointing sensor error and fine pointing sensor received power level of OICETS on 14 June The downlink BER characteristics were measured in the experiment campaign. We attained the BER of 10-6 as the best result during the experiments. Trial Number Table4 Summary of the KIODO experiment campaign. Experiment Date in 2006 Weather condition Link establishment (acquisition and tracking each terminal) 1st June 7th Clear sky Success 2nd June 9th Clear sky Success 3rd June 14th Clear sky Success 4th June 15th Clear sky Success 5th June 21st Cloudy No link 6th June 23rd Cloudy No link 7th June 28th Partly cloudy Success 8th June 30th Cloudy No link
8 Fig. 9 In-orbit configuration in the IRM mode for the orbit-toground experiment. Fig. 10 The coarse pointing sensor error of the OICETS on 5th September 2006 in KODEN experiment. Fine pointing sensor error X [μrad] Fine pointing sensor error Y [μrad] Fine pointing sensor level [dbm] Time[sec] Time[sec] Time [sec] Fig. 11 The fine pointing sensor error and the fine pointing sensor received power level of the OICETS on 5th September 2006 in KODEN experiment.
9 1.E+00 1.E+00 1.E-01 1.E-02 1.E-01 1.E-03 BER 1.E-04 BER 1.E-02 1.E-05 1.E-06 1.E-03 1.E-07 1.E-08 1.E Time [sec] Time [sec] Fig. 12 BER of the up link on 19th September Fig. 13 BER of the dawn link on 19th September Fine pointing sensor error X [μrad] Time[sec] 3 Fine pointing sensor error Y [μrad] Fine pointing sensor level [dbm] Time[sec] Time [sec] Fig. 14 The fine pointing sensor error and the fine pointing sensor received power level of the OICETS on 4th June 2006 in KIODO experiment.
10 5. CONCLUSIONS Serried in-orbit experiment results were described in this paper. The results of inter-orbit experiment between the GEO satellite ARTEMIS and the LEO satellite OICETS demonstrated that inter-orbit laser communication link had a quality for operational use. LEO-to-ground laser communication links were demonstrated by the experiment between the NICT OGS, DLR OGS and the OICETS. Moreover, some fundamental data of scintillation were obtained by the LEO-toground experiments. ACKNOWLEDGEMENT The in-orbit experiments were supported by many people through international cooperation. The authors wish to express our gratitude to the OICETS operation team at JAXA, the ARTEMIS operation team at ESA, the KODEN operation team at NICT and the KIODO operation team at DLR for their support in developing, preparing, and executing the experiments. REFERENCES 1. K. Nakagawa, et al., Preliminary design of Laser Utilizing Communications Experiment (LUCE) installed on Optical Inter-Orbit Communications Engineering Test Satellite (OICETS), Proceedings of the SPIE 2381, (1995). 2. T. Jono, et al., Acquisition, tracking and pointing system of OICETS for free space laser communications, Proceedings of the SPIE 3692, (1999). 3. M. Faup, et al., Experience Gained in the Frame of Silex Program Development and Future Trends, AIAA 16th International Communications Satellite Systems Conference 1996, (1996). 4. T. T. Nielsen,et al., In Orbit test result of an Operational Intersatellite Link between ARTEMIS and SPOT4, Proceedings of the SPIE Vol. 4635, 1-15 (2002). 5. T. Jono, Y. Takayama, N. Kura, K. Ohinata, Y. Koyama, K. Shiratama, Z. Sodnik, B. Demelenne, A. Bird and K. Arai, OICETS on-orbit laser communication experiments, Proc. SPIE, 6105, , 1-11 (2006). 6. M. Toyoshima, K. Takizawa, T. Kuri, W. Klaus, M. Toyoda, H. Kunimori, T. Jono, Y. Takayama, M. Mokuno and K. Arai, Results of ground-to-space optical communications experiments using a low earth orbit satellite, IEEE LEOS Annual Meeting, MH2, (2006). 7. M. Toyoshima, K. Takizawa, T. Kuri, W. Klaus, M. Toyoda, H. Kunimori, T. Jono, Y. Takayama, N. Kura, K. Ohinata, K. Arai and K. Shiratama, Ground-to-OICETS laser communication experiments, Proc. of SPIE, 6304B, 1-8 (2006). 8. Y. Takayama, T. Jono, M. Toyoshima, H. Kunimori,, D. Giggenbach, N. Perlot, M. Knapek, K. Shiratama, J. Abe, K. Arai, Tracking and pointing characteristics of OICETS optical terminal in communication demonstrations with ground stations, Free-Space Laser Communication Technologies XIX, Proc. of SPIE, 6457A (2007). 9. N. Perlot, M. Knapek, D. Giggenbach, J. Horwath, M. Brechtelsbauer, Y. Takayama, T. Jono, Results of the Optical Downlink Experiment KIODO from OICETS Satellite to Optical Ground Station Oberpfaffenhofen (OGS- OP), Free-Space Laser Communication Technologies XIX, Proc. of SPIE, 6457A (2007).
3-2 Optical Inter-orbit Communication Experiment between OICETS and ARTEMIS
3-2 Optical Inter-orbit Communication Experiment between OICETS and ARTEMIS Optical Inter-orbit Communications Engineering Test Satellite (OICETS) is an advanced engineering test satellite developed by
More informationTOYOSHIMA Morio, YAMAKAWA Shiro, YAMAWAKI Toshihiko, ARAI Katsuyoshi, Marcos Reyes, Angel Alonso, Zoran Sodnik, and Benoit Demelenne
3-3 Optical Compatibility Test between Engineering Model of Laser Utilizing Communication Equipment on the Ground and the ARTEMIS Satellite in a Geostationary Earth Orbit TOYOSHIMA Morio, YAMAKAWA Shiro,
More informationOptical Communication Experiment Using Very Small Optical TrAnsponder Component on a Small Satellite RISESAT
Optical Communication Experiment Using Very Small Optical TrAnsponder Component on a Small Satellite RISESAT Toshihiro Kubo-oka, Hiroo Kunimori, Hideki Takenaka, Tetsuharu Fuse, and Morio Toyoshima (National
More information4-2 Overview of the Laser Communication System for the NICT Optical Ground Station and Laser Communication Experiments on Ground-to- Satellite Links
4-2 Overview of the Laser Communication System for the NICT Optical Ground Station and Laser Communication Experiments on Ground-to- Satellite Links TOYOSHIMA Morio, KURI Toshiaki, KLAUS Werner, TOYODA
More informationTrends in Laser Communications in Space Report on International Workshop GOLCE2010
CONFERENCE REPORT Trends in Laser Communications in Space Report on International Workshop GOLCE2010 Morio Toyoshima National Institute of Information and Communications Technology Abstract In space, radio
More informationOptical Free-Space Communication on Earth and in Space regarding Quantum Cryptography Aspects
Optical Free-Space Communication on Earth and in Space regarding Quantum Cryptography Aspects Christian Fuchs, Dr. Dirk Giggenbach German Aerospace Center (DLR) {christian.fuchs,dirk.giggenbach}@dlr.de
More informationOverview of the Small Optical TrAnsponder (SOTA) Project
Overview of the Small Optical TrAnsponder (SOTA) Project Space Communications Laboratory Wireless Networks Research Center National Institute of Information and Communications Technology (NICT) Satellite
More informationAnalysis of Signal Fluctuations in LEO Downlink Experiments. Florian Moll. German Aerospace Center (DLR) DLR-IKN, 10 th Nov 2016
Analysis of Signal Fluctuations in LEO Downlink Experiments Florian Moll German Aerospace Center (DLR) OLEODL-Workshop @ DLR-IKN, 10 th Nov 2016 Outline Introduction Measurement setup Results Summary and
More informationTerrestrial Free-Space Optical Communications Network Testbed: INNOVA
Terrestrial Free-Space Optical Communications Network Testbed: INNOVA Morio Toyoshima, Yasushi Munemasa, Hideki Takenaka, Yoshihisa Takayama, Yoshisada Koyama, Hiroo Kunimori, Toshihiro Kubooka, Kenji
More informationDesign of the ESA Optical Ground Station for Participation in LLCD
Design of the ESA Optical Ground Station for Participation in LLCD Marc Sans and Zoran Sodnik European Space Research and Technology Centre European Space Agency Noordwijk, The Netherlands marc.sans@esa.int,
More informationKIODO 2009: Trials and Analysis Florian Moll Institute of Communications and Navigation German Aerospace Center (DLR)
KIODO 2009: Trials and Analysis Florian Moll Institute of Communications and Navigation German Aerospace Center (DLR) Table of content Scenario description Measurement instruments Analysis Power measurements
More informationDIRECT OPTICAL HIGH SPEED DOWNLINKS AND GROUND STATION NETWORKS FOR SMALL LEO MISSIONS
DIRECT OPTICAL HIGH SPEED DOWNLINKS AND GROUND STATION NETWORKS FOR SMALL LEO MISSIONS Dirk Giggenbach German Aerospace Center (DLR), 82234 Wessling, Germany Phone +49 8153 28-2821, fax -2844, dirk.giggenbach@dlr.de
More informationTrAnsponder) mission, conceived to prove for the first time the feasibility of high-bitrate lasercom from a microsatellite platform.
LEO-to-Ground Optical Communications using SOTA (Small Optical TrAnsponder) Payload Verification Results and Experiments on Space Quantum Communications Alberto Carrasco-Casado, Hideki Takenaka, Dimitar
More informationPerformance Evaluation of Intensity Modulation for Satellite laser Communication
International Journal of Engineering Research and Technology. ISSN 0974-3154 Volume 11, Number 12 (2018), pp. 2199-2204 International Research Publication House http://www.irphouse.com Performance Evaluation
More informationFrequency dissemination with free-space optical links
Frequency dissemination with free-space optical links Ramon Mata Calvo (1), Florian Moll (1), Dirk Giggenbach (1) (1) DLR - Deutsches Zentrum fuer Luft- und Raumfahrt German Aerospace Center, Institute
More informationWe are IntechOpen, the world s leading publisher of Open Access books Built by scientists, for scientists. International authors and editors
We are IntechOpen, the world s leading publisher of Open Access books Built by scientists, for scientists 3,800 116,000 120M Open access books available International authors and editors Downloads Our
More informationEnhanced Data Return from Lunar Farside using RF- Optical TT&C
Enhanced Data Return from Lunar Farside using RF- Optical TT&C T. Dreischer, M. Tüchler, K. Kudielka and G. Baister Oerlikon Space AG, Schaffhauserstrasse 580, Zürich CH-805, Switzerland D. Giggenbach
More informationW-Band Satellite Transmission in the WAVE Mission
W-Band Satellite Transmission in the WAVE Mission A. Jebril, M. Lucente, M. Ruggieri, T. Rossi University of Rome-Tor Vergata, Dept. of Electronic Engineering, Via del Politecnico 1, 00133 Rome - Italy
More informationMOBILE OPTICAL HIGH-SPEED DATA LINKS WITH SMALL TERMINALS
MOBILE OPTICAL HIGH-SPEED DATA LINKS WITH SMALL TERMINALS D. Giggenbach* Institute of Communications and Navigation, German Aerospace Center (DLR), D-82234 Wessling ABSTRACT Mobile Optical Free-Space Communication
More informationABSTRACT 1 INTRODUCTION
Invited Paper Copyright 016 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of
More informationDLR s Optical Communications Program for 2018 and beyond. Dr. Sandro Scalise Institute of Communications and Navigation
DLR.de Chart 1 DLR s Optical Communications Program for 2018 and beyond Dr. Sandro Scalise Institute of Communications and Navigation DLR.de Chart 3 Relevant Scenarios Unidirectional Links Main application
More informationWireless Power Transmission of Solar Energy from Space to Earth Using Microwaves
Wireless Power Transmission of Solar Energy from Space to Earth Using Microwaves Raghu Amgothu Contract Lecturer in ECE Dept., Government polytechnic Warangal Abstract- In the previous stages, we are studying
More informationAircraft to Ground Unidirectional Laser-Comm. Terminal for High Resolution Sensors
Aircraft to Ground Unidirectional Laser-Comm. Terminal for High Resolution Sensors Joachim Horwath, Christian Fuchs German Aerospace Centre (DLR), Institute of Communications and Navigation, Weßling, Germany.
More informationTIME TRANSFER EXPERIMENT BY TCE ON THE ETS-VIII SATELLITE
TIME TRANSFER EXPERIMENT BY TCE ON THE ETS-VIII SATELLITE Fumimaru Nakagawa, Yasuhiro Takahashi, Jun Amagai, Ryo Tabuchi, Shin ichi Hama, and Mizuhiko Hosokawa National Institute of Information and Communications
More informationOPTEL-µ : Flight Design and Status of EQM Development
OPTEL-µ : Flight Design and Status of EQM Development Elisabetta Rugi Grond General Manager OEI Opto AG ICSO-2016, 20 th Oct. 2016 Presentation Outline System Overview OPTEL-µ Space Terminal: Block Diagram
More informationGround stations for aeronautical and space laser communications at German Aerospace Center
Ground stations for aeronautical and space laser communications at German Aerospace Center Florian Moll*, Amita Shrestha, Christian Fuchs German Aerospace Center (DLR), Institute of Communications and
More informationApplication of an optical data link on DLR s BIROS satellite
www.dlr.de Chart 1 > OSIRIS @ SpaceOps > C. Fuchs > DLR Institute of Communications and Navigation Application of an optical data link on DLR s BIROS satellite Martin Brechtelsbauer, Christopher Schmidt,
More informationA Study on Layer 1 Network with Low Power Consumption for Data Relay Satellite
A Study on Layer 1 Network with Low Power Consumption for Relay Satellite Yuta Takemoto, Yoshiaki Konishi, Takashi Sugihara Information Technology R&D Center Mitsubishi Electric Corporation 5-1-1 Ofuna
More informationClear-air Turbulence Effects Modeling on Terrestrial and Satellite Free-Space Optical Channels
Copyright 015 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material
More informationBroadband Backhaul Communication for Stratospheric Platforms: The Stratospheric Optical Payload Experiment (STROPEX)
Broadband Backhaul Communication for Stratospheric Platforms: The Stratospheric Optical Payload Experiment (STROPEX) Joachim Horwath 1, Markus Knapek, Bernhard Epple, Martin Brechtelsbauer German Aerospace
More informationFigure 1. Proposed Mission Operations Functions. Key Performance Parameters Success criteria of an amateur communicator on board of Moon-exploration
Title: CubeSat amateur laser communicator with Earth to Moon orbit data link capability Primary Point of Contact (POC) & email: oregu.nijuniku@jaxa.jp Co-authors: Oleg Nizhnik Organization: JAXA Need Available
More informationTwo- Stage Control for CubeSat Optical Communications
Two- Stage Control for CubeSat Optical Communications Ryan W. Kingsbury Kathleen Riesing, Tam Nguyen, Prof. Kerri Cahoy MIT Space Systems Lab CalPoly CubeSat Developers Workshop April 24, 2014 Outline
More informationTHE ESA'S OPTICAL GROUND STATION FOR THE EDRS-A LCT IN-ORBIT TEST CAMPAIGN: UPGRADES AND TEST RESULTS
THE ESA'S OPTICAL GROUND STATION FOR THE EDRS-A LCT IN-ORBIT TEST CAMPAIGN: UPGRADES AND TEST RESULTS J. M. Perdigues 1, Z. Sodnik 1, H. Hauschildt 1, P. Sarasa 1, F. Porte-Proust 2, M. Wiegand 2, C. Rochow
More informationFunctional System Verification of the OPTEL-µ Laser Downlink System for Small Satellites in LEO
Proc. International Conference on Space Optical Systems and Applications (ICSOS) 4, S6-4, Kobe, Japan, May 7-9 (4) Functional System Verification of the OPTEL-µ Laser Downlink System for Small Satellites
More informationOverview of the Tracking and Control Center at the Tsukuba Space Center
Overview of the Tracking and Control Center at the Tsukuba Space Center Table of Contents 1. Outline of the Tsukuba Space Center 2 2. Role of the Tsukuba Tracking and Control Center 2 3. Tracking and Control
More informationBaumanets student micro-satellite
Baumanets student micro-satellite Presentation at UNIVERSAT 2006 International Symposium June 28, 2006 Moscow, Russia Victoria Mayorova Director of Youth Space Center of Bauman Moscow State Technical University
More informationRanging and Optical Communication R&D for Deep Space Missions
National Institute of Information and Communications Technology 14th BroadSky Workshop Ranging and Optical Communication R&D for Deep Space Missions October 18, 2016 Hiroo Kunimori *1) and Hayabusa2 LIDAR
More information3-9 High Accuracy Clock (HAC)
3-9 High Accuracy Clock (HAC) NODA Hiroyuki, SANO Kazuhiko, and HAMA Shin ichi To obtain the basic technology of satellite positioning system, NASDA will conduct the experiments of ETS-VIII high accurate
More informationA CubeSat-Based Optical Communication Network for Low Earth Orbit
A CubeSat-Based Optical Communication Network for Low Earth Orbit Richard Welle, Alexander Utter, Todd Rose, Jerry Fuller, Kristin Gates, Benjamin Oakes, and Siegfried Janson The Aerospace Corporation
More informationJapan's Greenhouse Gases Observation from Space
1 Workshop on EC CEOS Priority on GHG Monitoring Japan's Greenhouse Gases Observation from Space 18 June, 2018@Ispra, Italy Masakatsu NAKAJIMA Japan Aerospace Exploration Agency Development and Operation
More informationPrimary POC: Prof. Hyochoong Bang Organization: Korea Advanced Institute of Science and Technology KAIST POC
Title: Demonstration of Optical Stellar Interferometry with Near Earth Objects (NEO) using Laser Range Finder by a Nano Satellite Constellation: A Cost effective approach. Primary POC: Prof. Hyochoong
More informationTurbulence effects on bi-directional ground-to-satellite laser communication systems
Turbulence effects on bi-directional ground-to-satellite laser communication systems Nicolas Védrenne, Marie-Thérèse Velluet, Marc Séchaud, Jean-Marc Conan ONERA,The French Aerospace Lab, 92320 Châtillon,
More informationOVERVIEW OF THE ALOS SATELLITE SYSTEM
OVERVIEW OF THE ALOS SATELLITE SYSTEM Presented to The Symposium for ALOS Data Application Users @Kogakuin University, Tokyo, Japan Mar. 27, 2001 Takashi Hamazaki Senior Engineer ALOS Project National
More informationLLCD Accomplishments No Issues with Atmospheric Effects like Fading and Turbulence. Transmitting Data at 77 Mbps < 5 above the horizon
LLCD Accomplishments No Issues with Atmospheric Effects like Fading and Turbulence Transmitting Data at 77 Mbps < 5 above the horizon LLCD Accomplishments Streaming HD Video and Delivering Useful Scientific
More informationWide-Field-of-Regard Pointing, Acquisition and Tracking-System for small Laser Communication Terminals
Wide-Field-of-Regard Pointing, Acquisition and Tracking-System for small Laser Communication Terminals Christopher Schmidt Institute for Communication and Navigation German Aerospace Center (DLR) D-82234
More informationRecent developments in satellite laser communications: Canadian context
Recent developments in satellite laser communications: Canadian context Stephane Gagnon, Bruno Sylvestre and Louis Gagnon Neptec Design Group Kanata (Ontario) Canada sgagnon@neptec.com Alexander Koujelev
More informationPayload Configuration, Integration and Testing of the Deformable Mirror Demonstration Mission (DeMi) CubeSat
SSC18-VIII-05 Payload Configuration, Integration and Testing of the Deformable Mirror Demonstration Mission (DeMi) CubeSat Jennifer Gubner Wellesley College, Massachusetts Institute of Technology 21 Wellesley
More informationResearch Article Polarization-Basis Tracking Scheme in Satellite Quantum Key Distribution
International Optics Volume 211, Article ID 254154, 8 pages doi:1.1155/211/254154 Research Article Polarization-Basis Tracking Scheme in Satellite Quantum Key Distribution Morio Toyoshima, 1 Hideki Takenaka,
More informationChallenging, innovative and fascinating
O3b 2.4m antennas operating in California. Photo courtesy Hung Tran, O3b Networks Challenging, innovative and fascinating The satellite communications industry is challenging, innovative and fascinating.
More informationHEMERA Constellation of passive SAR-based micro-satellites for a Master/Slave configuration
HEMERA Constellation of passive SAR-based micro-satellites for a Master/Slave HEMERA Team Members: Andrea Bellome, Giulia Broggi, Luca Collettini, Davide Di Ienno, Edoardo Fornari, Leandro Lucchese, Andrea
More informationBrazil and Russia space cooperation: recent projects and future perspectives in the field of GNSS monitoring and SLR stations
Brazil and Russia space cooperation: recent projects and future perspectives in the field of GNSS monitoring and SLR stations Renato A. Borges (UnB) and Geovany A. Borges (UnB) Emails: raborges@ene.unb.br
More informationInnovation Needs Support: Two Examples of German Support Strategy in Satcom
The Space Congress Proceedings 2016 (44th) The Journey: Further Exploration for Universal Opportunities May 25th, 10:45 AM Innovation Needs Support: Two Examples of German Support Strategy in Satcom Frank
More informationTrends in satellite communications and the role of. optical free-space communications
Trends in satellite communications and the role of optical free-space communications Morio Toyoshima Institute of Communications and Radio-Frequency Engineering, Vienna University of Technology Gusshausstrasse
More informationChannel characterization for air-to-ground free-space optical communication links
Channel characterization for air-to-ground free-space optical communication links Kevin Shortt, Dirk Giggenbach, Ramon Mata-Calvo, Florian Moll, Christian Fuchs, Christopher Schmidt, Joachim Horwath, Jack
More informationDeep- Space Optical Communication Link Requirements
Deep- Space Optical Communication Link Requirements Professor Chester S. Gardner Department of Electrical and Computer Engineering University of Illinois cgardner@illinois.edu Link Equation: For a free-
More information5 Optical Communication Technologies
5 Optical Communication Technologies 5-1 Study on Laser Communications Demonstration Equipment at the International Space Station ARIMOTO Yoshinori This paper summarizes CRL s efforts to perform a mission
More informationPOINTING ERROR CORRECTION FOR MEMS LASER COMMUNICATION SYSTEMS
POINTING ERROR CORRECTION FOR MEMS LASER COMMUNICATION SYSTEMS Baris Cagdaser, Brian S. Leibowitz, Matt Last, Krishna Ramanathan, Bernhard E. Boser, Kristofer S.J. Pister Berkeley Sensor and Actuator Center
More informationPROCEEDINGS OF SPIE. Inter-satellite omnidirectional optical communicator for remote sensing
PROCEEDINGS OF SPIE SPIEDigitalLibrary.org/conference-proceedings-of-spie Inter-satellite omnidirectional optical communicator for remote sensing Jose E. Velazco, Joseph Griffin, Danny Wernicke, John Huleis,
More informationStatus of MOLI development MOLI (Multi-footprint Observation Lidar and Imager)
Status of MOLI development MOLI (Multi-footprint Observation Lidar and Imager) Tadashi IMAI, Daisuke SAKAIZAWA, Jumpei MUROOKA and Toshiyoshi KIMURA JAXA 1 Outline of This Presentation 1. Overview of MOLI
More informationJoint Australian Engineering (Micro) Satellite (JAESat) - A GNSS Technology Demonstration Mission
Journal of Global Positioning Systems (2005) Vol. 4, No. 1-2: 277-283 Joint Australian Engineering (Micro) Satellite (JAESat) - A GNSS Technology Demonstration Mission Werner Enderle Cooperative Research
More informationIntroduction. Satellite Research Centre (SaRC)
SATELLITE RESEARCH CENTRE - SaRC Introduction The of NTU strives to be a centre of excellence in satellite research and training of students in innovative space missions. Its first milestone satellite
More informationCNES Position Regarding the Use of the X- X and Ka- Bands for EESS
Orlando March 25-27, 2003 CNES Position Regarding the Use of the X- X and Ka- Bands for EESS Frédéric Cornet Centre National d'etudes Spatiales (Frederic.Cornet@cnes.fr) Data Rates Requirements Future
More informationAIM payload OPTEL-D. Multi-purpose laser communication system. Presentation to: AIM Industry Days ESTEC, 22nd February 2016
AIM payload OPTEL-D Multi-purpose laser communication system Presentation to: AIM Industry Days ESTEC, 22nd February 2016 Outline 1. Objectives OPTEL-D 2. Technology Development Activities 3. OPTEL-D payload
More informationInternational Interoperability Standards Development for Space Optical Communication
Proc. and Applications (ICSOS) 2014, S1-1, Kobe, Japan, May 7-9 (2014) International Interoperability Standards Development for Space Optical Communication John J. Rush NASA Headquarters Washington DC
More informationSatellite Sub-systems
Satellite Sub-systems Although the main purpose of communication satellites is to provide communication services, meaning that the communication sub-system is the most important sub-system of a communication
More informationSATELLIT COMMUNICATION
QUESTION BANK FOR SATELLITE COMMUNICATION UNIT I 1) Explain Kepler s laws. What are the fords that give rise to these laws? 2) Explain how a satellite is located with respect to earth. 3) Describe antenna
More informationThe Sounding Instruments on Second Generation of Chinese Meteorological Satellite FY-3
The Sounding Instruments on Second Generation of Chinese Meteorological Satellite FY-3 DONG Chaohua ZHANG Wenjian National Satellite Meteorological Center China Meteorological Administration Beijing 100081,
More informationThe Global Imager (GLI)
The Global Imager (GLI) Launch : Dec.14, 2002 Initial check out : to Apr.14, 2003 (~L+4) First image: Jan.25, 2003 Second image: Feb.6 and 7, 2003 Calibration and validation : to Dec.14, 2003(~L+4) for
More informationChapter 3 Solution to Problems
Chapter 3 Solution to Problems 1. The telemetry system of a geostationary communications satellite samples 100 sensors on the spacecraft in sequence. Each sample is transmitted to earth as an eight-bit
More informationSpace Situational Awareness 2015: GPS Applications in Space
Space Situational Awareness 2015: GPS Applications in Space James J. Miller, Deputy Director Policy & Strategic Communications Division May 13, 2015 GPS Extends the Reach of NASA Networks to Enable New
More informationB ==================================== C
Satellite Space Segment Communication Frequencies Frequency Band (GHz) Band Uplink Crosslink Downlink Bandwidth ==================================== C 5.9-6.4 3.7 4.2 0.5 X 7.9-8.4 7.25-7.7575 0.5 Ku 14-14.5
More informationSatellite Payloads for Optical Telecommunications
SpaceOps 2006 Conference AIAA 2006-5949 Satellite Payloads for Optical Telecommunications Valeria Catalano *, Lamberto Zuliani Agenzia Spaziale Italiana Viale Liegi 26, Roma, 00198, Italy E b /N 0 G/T
More informationStatus of Free Space Optical Communications Technology at the Jet Propulsion Laboratory
Status of Free Space Optical Communications Technology at the Jet Propulsion Laboratory National Aeronautics and Space Administration Jet Propulsion Laboratory California Institute of Technology Deep Space
More informationA modular solution for routine optical satellite-toground communications on small spacecrafts
A modular solution for routine optical satellite-toground communications on small spacecrafts M. Bacher, T. Dreischer, M.Mosberger, B.Thieme RUAG Space, Opto-Electronics & Instruments Department RUAG Schweiz
More informationDon M Boroson MIT Lincoln Laboratory. 28 August MIT Lincoln Laboratory
Free-Space Optical Communication Don M Boroson 28 August 2012 Overview-1 This work is sponsored by National Aeronautics and Space Administration under Air Force Contract #FA8721-05-C-0002. Opinions, interpretations,
More information1) Tohoku University, Japan 2) National Institute of Information and Communication Technology, Japan
Toshinori Kuwahara 1) *, Kazuya Yoshida 1), Yoshihiro Tomioka 1), Kazufumi Fukuda 1), Hiroo Kunimori 2), Morio Toyoshima 2), Tetsuharu Fuse 2), Toshihiro Kubooka 2) 1) Tohoku University, Japan 2) National
More informationGNSS Reflectometry and Passive Radar at DLR
ACES and FUTURE GNSS-Based EARTH OBSERVATION and NAVIGATION 26./27. May 2008, TU München Dr. Thomas Börner, Microwaves and Radar Institute, DLR Overview GNSS Reflectometry a joined proposal of DLR and
More informationStatus of Free-Space Optical Communications Program at JPL
Status of Free-Space Optical Communications Program at JPL H. Hemmati Jet Propulsion Laboratory California Institute of Technology 4800 Oak Grove Dr., Pasadena, CA 91 109, M/S 161-135 Phone #: 8 18-354-4960
More informationIstanbul Technical University Faculty of Aeronautics and Astronautics Space Systems Design and Test Laboratory
Title: Space Advertiser (S-VERTISE) Primary POC: Aeronautics and Astronautics Engineer Hakan AYKENT Organization: Istanbul Technical University POC email: aykent@itu.edu.tr Need Worldwide companies need
More informationTHE OPS-SAT NANOSATELLITE MISSION
THE OPS-SAT NANOSATELLITE MISSION Aerospace O.Koudelka, TU Graz M.Wittig MEW Aerospace D.Evans ESA 1 Contents 1) Introduction 2) ESA s OPS-SAT Mission 3) System Design 4) Communications Experiments 5)
More informationRECOMMENDATION ITU-R S.1257
Rec. ITU-R S.157 1 RECOMMENDATION ITU-R S.157 ANALYTICAL METHOD TO CALCULATE VISIBILITY STATISTICS FOR NON-GEOSTATIONARY SATELLITE ORBIT SATELLITES AS SEEN FROM A POINT ON THE EARTH S SURFACE (Questions
More informationTechnology of Precise Orbit Determination
Technology of Precise Orbit Determination V Seiji Katagiri V Yousuke Yamamoto (Manuscript received March 19, 2008) Since 1971, most domestic orbit determination systems have been developed by Fujitsu and
More informationUtilizing Commercial DSLR for High Resolution Earth Observation Satellite
SSC18-XII-03 Utilizing Commercial DSLR for High Resolution Earth Observation Satellite Nobutada Sako Canon Electronics Inc. 3-5-10, Shibakoen, Minato-ku, Tokyo 105-0011, Japan; +81-3-6910-1105 sako.nobutada@canon-elec.co.jp
More informationSatellite Communications. Chapter 9
Satellite Communications Chapter 9 Satellite-Related Terms Earth Stations antenna systems on or near earth Uplink transmission from an earth station to a satellite Downlink transmission from a satellite
More informationSatellite Communications. Chapter 9
Satellite Communications Chapter 9 Satellite-Related Terms Earth Stations antenna systems on or near earth Uplink transmission from an earth station to a satellite Downlink transmission from a satellite
More informationdebris manoeuvre by photon pressure
Satellite target for demonstration of space debris manoeuvre by photon pressure Benjamin Sheard EOS Space Systems Pty. Ltd. / Space Environment Research Centre Space Environment Research Centre (SERC):
More informationApplication of Satellite Communication System to Tsunami Early Warning System Satoru Ozawa
Application of Satellite Communication System to Tsunami Early Warning System Satoru Ozawa Space Applications Program Systems Engineering Office Space Applications Mission Directorate Japan Aerospace Exploration
More informationTHE OFFICINE GALILEO DIGITAL SUN SENSOR
THE OFFICINE GALILEO DIGITAL SUN SENSOR Franco BOLDRINI, Elisabetta MONNINI Officine Galileo B.U. Spazio- Firenze Plant - An Alenia Difesa/Finmeccanica S.p.A. Company Via A. Einstein 35, 50013 Campi Bisenzio
More informationPROPOSAL FOR A NEW HYPER SPECTRAL IMAGING MICRO SATELLITE: SVALBIRD
PROPOSAL FOR A NEW HYPER SPECTRAL IMAGING MICRO SATELLITE: SVALBIRD Fred Sigernes 1, Udo Renner 2, Stephan Roemer 2, Jörn-Hendrik Bleif 2, Dag Arne Lorentzen 1, Stefan Claes 1, Reidar Nordheim 3, Frank
More informationMultiple Wavelength Free-Space Laser Communications
Multiple Wavelength Free-Space Laser Communications Robert Purvinskis a, Dirk Giggenbach, Hennes Henniger, Nicolas Perlot, Florian David b a University of South Australia, Mawson Lakes, S.A. 5095, Australia
More informationNanosatellite Lasercom System. Rachel Morgan Massachusetts Institute of Technology 77 Massachusetts Avenue
SSC17-VIII-1 Nanosatellite Lasercom System Rachel Morgan Massachusetts Institute of Technology 77 Massachusetts Avenue remorgan@mit.edu Faculty Advisor: Kerri Cahoy Massachusetts Institute of Technology
More informationDesign of a Free Space Optical Communication Module for Small Satellites
Design of a Free Space Optical Communication Module for Small Satellites Ryan W. Kingsbury, Kathleen Riesing Prof. Kerri Cahoy MIT Space Systems Lab AIAA/USU Small Satellite Conference August 6 2014 Problem
More informationAES SATELLITE SOCRATES
AES SATELLITE SOCRATES Adopted as a piggyback satellite of the ALOS-2 (JAXA)!! Going to be launched in 2013!! Advanced Engineering Services Co.,Ltd. MISSIONS OF SOCRATES 1Demonstration of the small satellite
More informationThe Nemo Bus: A Third Generation Nanosatellite Bus for Earth Monitoring and Observation
The Nemo Bus: A Third Generation Nanosatellite Bus for Earth Monitoring and Observation FREDDY M. PRANAJAYA Manager, Advanced Systems Group S P A C E F L I G H T L A B O R A T O R Y University of Toronto
More informationAdvanced Optical Satellite (ALOS-3) Overviews
K&C Science Team meeting #24 Tokyo, Japan, January 29-31, 2018 Advanced Optical Satellite (ALOS-3) Overviews January 30, 2018 Takeo Tadono 1, Hidenori Watarai 1, Ayano Oka 1, Yousei Mizukami 1, Junichi
More informationSSC99-VI th AIAA/USU Conference on Small Satellites. Dr. Stephen Horan
SSC99-VI-7 Three Corner Sat Constellation New Mexico State University: Communications, LEO Telecommunications Services, Intersatellite Communications, and Ground Stations and Network S. Horan and B. Anderson
More informationINTERNATIONAL JOURNAL OF PURE AND APPLIED RESEARCH IN ENGINEERING AND TECHNOLOGY
INTERNATIONAL JOURNAL OF PURE AND APPLIED RESEARCH IN ENGINEERING AND TECHNOLOGY A PATH FOR HORIZING YOUR INNOVATIVE WORK SATELLITE COMMUNICATION AND ITS APPLICATIONS SHEETAL RAJPUT Dept. of Computer Science
More informationAIRBORNE VISIBLE LASER OPTICAL COMMUNICATION EXPERIMENT
AIRBORNE VISIBLE LASER OPTICAL COMMUNICATION EXPERIMENT Item Type text; Proceedings Authors Randall, J. L. Publisher International Foundation for Telemetering Journal International Telemetering Conference
More informationCubeSat Integration into the Space Situational Awareness Architecture
CubeSat Integration into the Space Situational Awareness Architecture Keith Morris, Chris Rice, Mark Wolfson Lockheed Martin Space Systems Company 12257 S. Wadsworth Blvd. Mailstop S6040 Littleton, CO
More informationPerformance Analysis of Inter-satellite
ABHIYANTRIKI An International Journal of Engineering & Technology (A Peer Reviewed & Indexed Journal) Vol. 4, No. 4 (April, 2017) http://www.aijet.in/ eissn: 2394-627X Performance Analysis of Inter-satellite
More information