Sensor set stabilization system for miniature UAV
|
|
- Ralph Greer
- 6 years ago
- Views:
Transcription
1 Sensor set stabilization system for miniature UAV Wojciech Komorniczak 1, Tomasz Górski, Adam Kawalec, Jerzy Pietrasiński Military University of Technology, Institute of Radioelectronics, Warsaw, POLAND ABSTACT In this paper we present the concept of multiple sensors data acquisition from onboard of an Unmanned Air Vehicule (UAV). Because of flight instabilities caused by atmosferic movements (winds, thermals etc..) it is necessary to apply active stabilization in order to obtain reliable readings from observation sensors. The most stabilization-demanding sensor is Synthetic Aperture Radar (SAR) and in this paper two methods of stabilization are presented: hybrid (electromechanical) and electronic. sensors, unmanned air vehicule, stabilization 1. INTRODUCTION UAVs gain more and more attention last years especially in military applications. This is caused by an obvious profit that using UAVs it is possible to reduce human loss since soldier s life is not jeoperdised during reconnaissance missions. Since startegic UAVs (eg. Global Hawk) are of the same size and weight as manned aircrafts, their exploatation costs are also comparable to regular planes. Therefore is is particulary interesting to consider using very small UAVs, not havier than tens of kilogramms. Platforms of this type are relatively cheap in exploatation and need very little logistic support. In most cases, small UAVs are sufficient for reconnaissance missions 1. Their drawback is related to instabilities of the flight caused by atmosferic movements. More precisely, small wing load and narrow flight speed envelope (around 70 to 100 mk/h) cause a strong relation between platform stability and atmosferic movements (Fig. 1). In the figure, it is possible to see aircraft orientation along longitudinal axis and lateral axis during circular flight around point of interest. It is possible to notice, that apart from constant bank (around longitudinal axis typical for circular flight), considerable oscialtions (15 to 20 degrees) are present. This behaviour considerably deteriorates surveillance process 1. Fig. 1. UAV s instabilities along longitudinal axis and along lateral axis as a function of time during circular flight. 1 wojciech.komorniczak@wel.wat.edu.pl Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2009, edited by Ryszard S. Romaniuk, Krzysztof S. Kulpa, Proc. of SPIE Vol. 7502, SPIE CCC code: X/09/$18 doi: / Proc. of SPIE Vol
2 2. ELECTRO-MECHANICAL STABILIZASTION UNIT Instabilities can be partially eliminated using electro-mechanical stabilization. Unit of this type can be placed in the center of mass of an aircraft (Fig. 2) and serves as the mounting point of observation sensors. This unit can compensate instabilities of high amplitude (tens of degrees around longitudinal and lateral axis, and up to around 10 degrees around vertical axis) and low angular velocity (up to 60 degrees per second). This solution is sufficient for operation of optical sensors like daylight camera or thermal camera. Elcetro-mechanical stabilization module consists of three electronic circuits (Fig. 3) of the same structure. In each of them, pizoelectric gyroscope (MEMS) is used as an angular velocity meter (rate gyro). Processing unit is using Proportional Integrational Differential (PID) loop to achieve stabilization effect. PID loop coefficients are chosen independently for each axis. Mechanical design of the unit is presented in figure 4. Distinctive feature of this solution is the fact, that all rotation axes have single midpoint in the center of mass of the aircraft. This allows to avoid coupling between stabilization action of the electro-mechanical unit and platform movements. Fig. 2. UAV platform with electro-mechanical stabilization unit. Fig. 3. Electronic circuit for electro-mechanical stabilization (3 stabilization channels). Proc. of SPIE Vol
3 Fig. 4. Mechanical design of the electro-mechanical unit. High angular-velocity oscilations (above 60 degrees per second) can not be eliminated by electro-mechanical unit described earlier. This is caused by sensors high momentum of inertia (comparable to momentum of inertia of the aircraft itself). Therefore it is necessary to find non-mechanical stabilization method. 3. ELECTRONIC COMPENSTATION OF INSTABILITIES Low amplitude and high frequency oscillations can be compensated electronically. Optical sensors used in presented solution, have build-in electronic stabilization. This allows to compensate movements up to a few degrees. Synthetic Aperture Radar, considered as potential sensor, doesn t have such stabilization. Idea of SAR stabilization is based on Attitude and Heading Reference Systems (AHRS) in combination with appropriate SAR processing algorithms (Fig. 5). Fig. 5. Electronic SAR instabilities compensation. Proc. of SPIE Vol
4 Fig. 6. AHRS unit for electronic instabilities compensation for SAR. Designed AHRS unit uses 13 sensors (Fig. 6). Data fusion from these sensors is based on Kalman filter and gives Euler angles for all three axes with update frequency of 500Hz [3]. Unit presents no time drift and high short-time acuracy (necessary for SAR). SAR imaging is a technique, that produces high resolution images by processing multiple radar pulses in order to obtain a single image pixel. To obtain this effect a relatively small antenna is used (low angular resolution). Received echoes are sampled in the receiver and recorded in the computer memory for batch processing. This processing (so called focusing) can be divided into two phases: range compression and azimuth compression. Additionally, between range compression and azimuth compression, it is necessary to perform range migration processing. In the ideal case, several assumptions are fulfilled: straight-line flight path, constant velocity of the platform and constant orientation of the system. Unfortunately in practice these assumptions can be fullfilled (to certain extent) only for spaceborne SAR systems. For airborne systems (eg. UAV), platform oscillations have strong negative effect on SAR performance. In fact, without platform movement compenstation, focusing is not possible. Compensation can be achieved in two ways: autofocusing algorithms or AHRS corrections incorporated by focusing algorithm. There are three types of errors caused by flight instabilities. These are: trajectory deviations, velocity error and attitude error. Trajectory deviations from straight line cause phase error to the received signal. This type of errors can be compensated using AHRS system by applying appropriate phase corrections to focusing algorithm. In order to achieve this compensation it is necessary to know trajectory with accuracy of order of fractions of wavelength. Trajectory update frequency must by hight enough to obtain reliable trajectory approximation. Because of these constraints, using only GPS data is insufficient, since it s accuracy is of order of meters and it s update frequency is too low (around 10 Hz). The next problem is platform changing velocity. It may be caused by atmospheric movements or by changes in the engine performance. Compensation of this effect can be put in the focusing algorithm (based on registered ground speed). Moreover it is possible to compensate this effect by dynamically changing Pulse Repetition Frequency (PRF) according to actual ground speed. Last error is related to changes in platform attitude. This causes angular movement of the antenna and the antenna beam. This results in shortening of synthetic aperture and causes problems with focusing algorithm. This effect occures for rotations around vertical axis and longitudinal axis. This error should be compensated by electro-mechanical unit by rotating the antenna. In more advanced systems the same compensation can be achieved using array antenna and beamforming. In such a case there is no need for mechanical unit. 4. CONCLUSIONS Presented concept of active stabilization for UAV sensors is in the final implementation stage (both hardware and software). Preliminary tests support theoretical discussion. Complete system should be ready in the autumn It will be then possible to make a whole range of tests with data registration for off-line ground analysis. Proc. of SPIE Vol
5 ACKNOWLEDGEMENTS This work is supported by Polish government (grant PBZ-MNiSW-DBO-04/I/2007). BIBLIOGRAPHY [1] Kawalec A., Komorniczak W., Pietrasiński J., Czarnecki W.: Evaluation of low cost micro UAV platform for sensor suite, International Radar Symposium IRS 2006, Kraków, Poland, , pp [2] Kawalec A., Komorniczak W., Pietrasiński J.: The Instability Measurements for the Unmanned Aerial Platform as a Radar Carrier, International Radar Symposium IRS 2008, Wrocław, Poland, May 2008, pp [3] Liggins M., Hall D., Llinas J.: Multisensor Data Fusion. Theory and Practice. CRC Press Proc. of SPIE Vol
THE modern airborne surveillance and reconnaissance
INTL JOURNAL OF ELECTRONICS AND TELECOMMUNICATIONS, 2011, VOL. 57, NO. 1, PP. 37 42 Manuscript received January 19, 2011; revised February 2011. DOI: 10.2478/v10177-011-0005-z Radar and Optical Images
More informationMicrowave Remote Sensing (1)
Microwave Remote Sensing (1) Microwave sensing encompasses both active and passive forms of remote sensing. The microwave portion of the spectrum covers the range from approximately 1cm to 1m in wavelength.
More informationHelicopter Aerial Laser Ranging
Helicopter Aerial Laser Ranging Håkan Sterner TopEye AB P.O.Box 1017, SE-551 11 Jönköping, Sweden 1 Introduction Measuring distances with light has been used for terrestrial surveys since the fifties.
More informationSynthetic Aperture Radar
Synthetic Aperture Radar Picture 1: Radar silhouette of a ship, produced with the ISAR-Processor of the Ocean Master A Synthetic Aperture Radar (SAR), or SAR, is a coherent mostly airborne or spaceborne
More informationA Passive Suppressing Jamming Method for FMCW SAR Based on Micromotion Modulation
Progress In Electromagnetics Research M, Vol. 48, 37 44, 216 A Passive Suppressing Jamming Method for FMCW SAR Based on Micromotion Modulation Jia-Bing Yan *, Ying Liang, Yong-An Chen, Qun Zhang, and Li
More informationFLCS V2.1. AHRS, Autopilot, Gyro Stabilized Gimbals Control, Ground Control Station
AHRS, Autopilot, Gyro Stabilized Gimbals Control, Ground Control Station The platform provides a high performance basis for electromechanical system control. Originally designed for autonomous aerial vehicle
More informationMARITIME patrol aircraft are used in Poland to survey
INTL JOURNAL OF ELECTRONICS AND TELECOMMUNICATIONS, 2013, VOL. 59, NO. 3, PP. 213 218 Manuscript received September 2, 2013; revised September, 2013. DOI: 10.2478/eletel-2013-0025 Implementation and Results
More informationDetection of traffic congestion in airborne SAR imagery
Detection of traffic congestion in airborne SAR imagery Gintautas Palubinskas and Hartmut Runge German Aerospace Center DLR Remote Sensing Technology Institute Oberpfaffenhofen, 82234 Wessling, Germany
More informationNUMERICAL ANALYSIS OF WHISKBROOM TYPE SCANNER IMAGES FOR ASSESSMENT OF OPEN SKIES TEST FLIGHTS
NUMERICAL ANALYSIS OF WHISKBROOM TYPE SCANNER IMAGES FOR ASSESSMENT OF OPEN SKIES TEST FLIGHTS Piotr Walczykowski, Wieslaw Debski Dept. of Remote Sensing and Geoinformation, Military University of Technology,
More information3DM-GX4-45 LORD DATASHEET. GPS-Aided Inertial Navigation System (GPS/INS) Product Highlights. Features and Benefits. Applications
LORD DATASHEET 3DM-GX4-45 GPS-Aided Inertial Navigation System (GPS/INS) Product Highlights High performance integd GPS receiver and MEMS sensor technology provide direct and computed PVA outputs in a
More informationIntroduction Objective and Scope p. 1 Generic Requirements p. 2 Basic Requirements p. 3 Surveillance System p. 3 Content of the Book p.
Preface p. xi Acknowledgments p. xvii Introduction Objective and Scope p. 1 Generic Requirements p. 2 Basic Requirements p. 3 Surveillance System p. 3 Content of the Book p. 4 References p. 6 Maritime
More informationSmartSenseCom Introduces Next Generation Seismic Sensor Systems
SmartSenseCom Introduces Next Generation Seismic Sensor Systems Summary: SmartSenseCom, Inc. (SSC) has introduced the next generation in seismic sensing technology. SSC s systems use a unique optical sensing
More informationSynthetic Aperture Radar (SAR) Imaging using Global Back Projection (GBP) Algorithm For Airborne Radar Systems
Proc. of Int. Conf. on Current Trends in Eng., Science and Technology, ICCTEST Synthetic Aperture Radar (SAR) Imaging using Global Back Projection (GBP) Algorithm For Airborne Radar Systems Kavitha T M
More informationMicrowave Remote Sensing
Provide copy on a CD of the UCAR multi-media tutorial to all in class. Assign Ch-7 and Ch-9 (for two weeks) as reading material for this class. HW#4 (Due in two weeks) Problems 1,2,3 and 4 (Chapter 7)
More informationPassive Radars as Sources of Information for Air Defence Systems
Passive Radars as Sources of Information for Air Defence Systems Wiesław Klembowski *, Adam Kawalec **, Waldemar Wizner *Saab Technologies Poland, Ostrobramska 101, 04 041 Warszawa, POLAND wieslaw.klembowski@saabgroup.com
More informationUAV Detection and Localization Using Passive DVB-T Radar MFN and SFN
UAV Detection and Localization Using Passive DVB-T Radar MFN and SFN Dominique Poullin ONERA Palaiseau Chemin de la Hunière BP 80100 FR-91123 PALAISEAU CEDEX FRANCE Dominique.poullin@onera.fr ABSTRACT
More informationNon Stationary Bistatic Synthetic Aperture Radar Processing: Assessment of Frequency Domain Processing from Simulated and Real Signals
PIERS ONLINE, VOL. 5, NO. 2, 2009 196 Non Stationary Bistatic Synthetic Aperture Radar Processing: Assessment of Frequency Domain Processing from Simulated and Real Signals Hubert M. J. Cantalloube Office
More informationDual Channel Monopulse Automatic Phase Calibration Method Xinfeng Fan1, a, Yongming Nie1, b* and Xin Ding1, c
International Conference on Education, Management and Computer Science (ICEMC 2016) Dual Channel Monopulse Automatic Phase Calibration Method Xinfeng Fan1, a, Yongming Nie1, b* and Xin Ding1, c 1 China
More informationModel-Based Design for Sensor Systems
2009 The MathWorks, Inc. Model-Based Design for Sensor Systems Stephanie Kwan Applications Engineer Agenda Sensor Systems Overview System Level Design Challenges Components of Sensor Systems Sensor Characterization
More informationOughtToPilot. Project Report of Submission PC128 to 2008 Propeller Design Contest. Jason Edelberg
OughtToPilot Project Report of Submission PC128 to 2008 Propeller Design Contest Jason Edelberg Table of Contents Project Number.. 3 Project Description.. 4 Schematic 5 Source Code. Attached Separately
More informationInertial Sensors. Ellipse Series MINIATURE HIGH PERFORMANCE. Navigation, Motion & Heave Sensing IMU AHRS MRU INS VG
Ellipse Series MINIATURE HIGH PERFORMANCE Inertial Sensors IMU AHRS MRU INS VG ITAR Free 0.1 RMS Navigation, Motion & Heave Sensing ELLIPSE SERIES sets up new standard for miniature and cost-effective
More informationRadar Systems.
www.aselsan.com.tr Radar Systems With extensive radar heritage exceeding 20 years, ASELSAN is a new generation manufacturer of indigenous, state-ofthe-art radar systems. ASELSAN s radar product portfolio
More informationFLY EYE RADAR MINE DETECTION GROUND PENETRATING RADAR ON TETHERED DRONE PASSIVE RADAR FOR SMALL UAS PASSIVE SMALL PROJECTILE TRACKING RADAR
PASSIVE RADAR FOR SMALL UAS PLANAR MONOLITHICS INDUSTRIES, INC. East Coast: 7311F GROVE ROAD, FREDERICK, MD 21704 USA PHONE: 301-662-5019 FAX: 301-662-2029 West Coast: 4921 ROBERT J. MATHEWS PARKWAY, SUITE
More informationClassical Control Based Autopilot Design Using PC/104
Classical Control Based Autopilot Design Using PC/104 Mohammed A. Elsadig, Alneelain University, Dr. Mohammed A. Hussien, Alneelain University. Abstract Many recent papers have been written in unmanned
More informationGPS System Design and Control Modeling. Chua Shyan Jin, Ronald. Assoc. Prof Gerard Leng. Aeronautical Engineering Group, NUS
GPS System Design and Control Modeling Chua Shyan Jin, Ronald Assoc. Prof Gerard Leng Aeronautical Engineering Group, NUS Abstract A GPS system for the autonomous navigation and surveillance of an airship
More informationStudy of Polarimetric Calibration for Circularly Polarized Synthetic Aperture Radar
Study of Polarimetric Calibration for Circularly Polarized Synthetic Aperture Radar 2016.09.07 CEOS WORKSHOP 2016 Yuta Izumi, Sevket Demirci, Mohd Zafri Baharuddin, and Josaphat Tetuko Sri Sumantyo JOSAPHAT
More informationCongress Best Paper Award
Congress Best Paper Award Preprints of the 3rd IFAC Conference on Mechatronic Systems - Mechatronics 2004, 6-8 September 2004, Sydney, Australia, pp.547-552. OPTO-MECHATRONIC IMAE STABILIZATION FOR A COMPACT
More informationDefense Technical Information Center Compilation Part Notice
UNCLASSIFIED Defense Technical Information Center Compilation Part Notice ADPO10954 TITLE: INS/GPS for Strike Warfare Beyond the Year 2000 DISTRIBUTION: Approved for public release, distribution unlimited
More informationSensing. Autonomous systems. Properties. Classification. Key requirement of autonomous systems. An AS should be connected to the outside world.
Sensing Key requirement of autonomous systems. An AS should be connected to the outside world. Autonomous systems Convert a physical value to an electrical value. From temperature, humidity, light, to
More informationLt Col Greg Vansuch. Special Projects Office. DARPATech September 2000
Lt Col Greg Vansuch DARPATech 2000 6-8 September 2000 Guidance Technology Programs MEMS INS Gyroscopes 1.0 to 10 /hr Accelerometers 500 mg 10 in 3, 0.8 lbs Global Positioning Experiments Airborne Pseudolite
More informationApplying Multisensor Information Fusion Technology to Develop an UAV Aircraft with Collision Avoidance Model
Applying Multisensor Information Fusion Technology to Develop an UAV Aircraft with Collision Avoidance Model by Dr. Buddy H Jeun and John Younker Sensor Fusion Technology, LLC 4522 Village Springs Run
More informationDevelopment of Hybrid Flight Simulator with Multi Degree-of-Freedom Robot
Development of Hybrid Flight Simulator with Multi Degree-of-Freedom Robot Kakizaki Kohei, Nakajima Ryota, Tsukabe Naoki Department of Aerospace Engineering Department of Mechanical System Design Engineering
More informationGUIDED WEAPONS RADAR TESTING
GUIDED WEAPONS RADAR TESTING by Richard H. Bryan ABSTRACT An overview of non-destructive real-time testing of missiles is discussed in this paper. This testing has become known as hardware-in-the-loop
More informationHeterogeneous Control of Small Size Unmanned Aerial Vehicles
Magyar Kutatók 10. Nemzetközi Szimpóziuma 10 th International Symposium of Hungarian Researchers on Computational Intelligence and Informatics Heterogeneous Control of Small Size Unmanned Aerial Vehicles
More informationCooperative navigation (part II)
Cooperative navigation (part II) An example using foot-mounted INS and UWB-transceivers Jouni Rantakokko Aim Increased accuracy during long-term operations in GNSS-challenged environments for - First responders
More informationPassive Radars on Mobile Platforms - New Changes and New Benefits
Passive Radars on Mobile Platforms - New Changes and New Benefits Krzysztof Kulpa Warsaw University of Technology, Poland k.kulpa@elka.pw.edu.pl WUT is the largest of 18 Polish technical universities Public
More informationImplementation of PIC Based Vehicle s Attitude Estimation System Using MEMS Inertial Sensors and Kalman Filter
Implementation of PIC Based Vehicle s Attitude Estimation System Using MEMS Inertial Sensors and Kalman Filter Htoo Maung Maung Department of Electronic Engineering, Mandalay Technological University Mandalay,
More informationRADAR AND ATM PERFORMANCE ANALYSIS SUITE (RAPAS)
RADAR AND ATM PERFORMANCE ANALYSIS SUITE (RAPAS) I2M Systems Inc. has a significant experience in developing ATC-related software. We have a proven record in developing software for Surveillance purposes
More informationME 434 MEMS Tuning Fork Gyroscope Amanda Bristow Stephen Nary Travis Barton 12/9/10
ME 434 MEMS Tuning Fork Gyroscope Amanda Bristow Stephen Nary Travis Barton 12/9/10 1 Abstract MEMS based gyroscopes have gained in popularity for use as rotation rate sensors in commercial products like
More information302 VIBROENGINEERING. JOURNAL OF VIBROENGINEERING. MARCH VOLUME 15, ISSUE 1. ISSN
949. A distributed and low-order GPS/SINS algorithm of flight parameters estimation for unmanned vehicle Jiandong Guo, Pinqi Xia, Yanguo Song Jiandong Guo 1, Pinqi Xia 2, Yanguo Song 3 College of Aerospace
More informationThe Next Generation Design of Autonomous MAV Flight Control System SmartAP
The Next Generation Design of Autonomous MAV Flight Control System SmartAP Kirill Shilov Department of Aeromechanics and Flight Engineering Moscow Institute of Physics and Technology 16 Gagarina st, Zhukovsky,
More informationUSE OF IMPROVISED REMOTELY SENSED DATA FROM UAV FOR GIS AND MAPPING, A CASE STUDY OF GOMA CITY, DR CONGO
USE OF IMPROVISED REMOTELY SENSED DATA FROM UAV FOR GIS AND MAPPING, A CASE STUDY OF GOMA CITY, DR CONGO Cung Chin Thang United Nations Global Support Center, Brindisi, Italy, Email: thang@un.org KEY WORDS:
More informationModule 2: Lecture 4 Flight Control System
26 Guidance of Missiles/NPTEL/2012/D.Ghose Module 2: Lecture 4 Flight Control System eywords. Roll, Pitch, Yaw, Lateral Autopilot, Roll Autopilot, Gain Scheduling 3.2 Flight Control System The flight control
More informationAE4-393: Avionics Exam Solutions
AE4-393: Avionics Exam Solutions 2008-01-30 1. AVIONICS GENERAL a) WAAS: Wide Area Augmentation System: an air navigation aid developed by the Federal Aviation Administration to augment the Global Positioning
More informationDynamically Adaptive Inverted Pendulum Platfom
Dynamically Adaptive Inverted Pendulum Platfom 2009 Colorado Space Grant Symposium Jonathon Cox Colorado State University Undergraduate in Electrical Engineering Email: csutke@gmail.com Web: www.campusaudio.com
More informationRemote Sensing. Ch. 3 Microwaves (Part 1 of 2)
Remote Sensing Ch. 3 Microwaves (Part 1 of 2) 3.1 Introduction 3.2 Radar Basics 3.3 Viewing Geometry and Spatial Resolution 3.4 Radar Image Distortions 3.1 Introduction Microwave (1cm to 1m in wavelength)
More informationIMU Platform for Workshops
IMU Platform for Workshops Lukáš Palkovič *, Jozef Rodina *, Peter Hubinský *3 * Institute of Control and Industrial Informatics Faculty of Electrical Engineering, Slovak University of Technology Ilkovičova
More informationHALS-H1 Ground Surveillance & Targeting Helicopter
ARATOS-SWISS Homeland Security AG & SMA PROGRESS, LLC HALS-H1 Ground Surveillance & Targeting Helicopter Defense, Emergency, Homeland Security (Border Patrol, Pipeline Monitoring)... Automatic detection
More informationBW-IMU200 Serials. Low-cost Inertial Measurement Unit. Technical Manual
Serials Low-cost Inertial Measurement Unit Technical Manual Introduction As a low-cost inertial measurement sensor, the BW-IMU200 measures the attitude parameters of the motion carrier (roll angle, pitch
More informationLecture Topics. Doppler CW Radar System, FM-CW Radar System, Moving Target Indication Radar System, and Pulsed Doppler Radar System
Lecture Topics Doppler CW Radar System, FM-CW Radar System, Moving Target Indication Radar System, and Pulsed Doppler Radar System 1 Remember that: An EM wave is a function of both space and time e.g.
More informationCIRCULAR DUAL-POLARISED WIDEBAND ARRAYS FOR DIRECTION FINDING
CIRCULAR DUAL-POLARISED WIDEBAND ARRAYS FOR DIRECTION FINDING M.S. Jessup Roke Manor Research Limited, UK. Email: michael.jessup@roke.co.uk. Fax: +44 (0)1794 833433 Keywords: DF, Vivaldi, Beamforming,
More informationInertial Sensors. Ellipse 2 Series MINIATURE HIGH PERFORMANCE. Navigation, Motion & Heave Sensing IMU AHRS MRU INS VG
Ellipse 2 Series MINIATURE HIGH PERFORMANCE Inertial Sensors IMU AHRS MRU INS VG ITAR Free 0.1 RMS Navigation, Motion & Heave Sensing ELLIPSE SERIES sets up new standard for miniature and cost-effective
More informationCATEGORY 7 - NAVIGATION AND AVIONICS A. SYSTEMS, EQUIPMENT AND COMPONENTS
Commerce Control List Supplement No. 1 to Part 774 Category 7 page 1 CATEGORY 7 - NAVIGATION AND AVIONICS A. SYSTEMS, EQUIPMENT AND COMPONENTS N.B.1: For automatic pilots for underwater vehicles, see Category
More informationInertial Sensors. Ellipse 2 Series MINIATURE HIGH PERFORMANCE. Navigation, Motion & Heave Sensing IMU AHRS MRU INS VG
Ellipse 2 Series MINIATURE HIGH PERFORMANCE Inertial Sensors IMU AHRS MRU INS VG ITAR Free 0.1 RMS Navigation, Motion & Heave Sensing ELLIPSE SERIES sets up new standard for miniature and cost-effective
More informationInertial Sensors. Ellipse Series MINIATURE HIGH PERFORMANCE. Navigation, Motion & Heave Sensing IMU AHRS MRU INS VG
Ellipse Series MINIATURE HIGH PERFORMANCE Inertial Sensors IMU AHRS MRU INS VG ITAR Free 0.2 RMS Navigation, Motion & Heave Sensing ELLIPSE SERIES sets up new standard for miniature and cost-effective
More informationQUADROTOR ROLL AND PITCH STABILIZATION USING SYSTEM IDENTIFICATION BASED REDESIGN OF EMPIRICAL CONTROLLERS
QUADROTOR ROLL AND PITCH STABILIZATION USING SYSTEM IDENTIFICATION BASED REDESIGN OF EMPIRICAL CONTROLLERS ANIL UFUK BATMAZ 1, a, OVUNC ELBIR 2,b and COSKU KASNAKOGLU 3,c 1,2,3 Department of Electrical
More informationEnhanced LWIR NUC Using an Uncooled Microbolometer Camera
Enhanced LWIR NUC Using an Uncooled Microbolometer Camera Joe LaVeigne a, Greg Franks a, Kevin Sparkman a, Marcus Prewarski a, Brian Nehring a a Santa Barbara Infrared, Inc., 30 S. Calle Cesar Chavez,
More informationRECONNAISSANCE PAYLOADS FOR RESPONSIVE SPACE
3rd Responsive Space Conference RS3-2005-5004 RECONNAISSANCE PAYLOADS FOR RESPONSIVE SPACE Charles Cox Stanley Kishner Richard Whittlesey Goodrich Optical and Space Systems Division Danbury, CT Frederick
More informationSERIES VECTORNAV TACTICAL SERIES VN-110 IMU/AHRS VN-210 GNSS/INS VN-310 DUAL GNSS/INS
TACTICAL VECTORNAV SERIES TACTICAL SERIES VN110 IMU/AHRS VN210 GNSS/INS VN310 DUAL GNSS/INS VectorNav introduces the Tactical Series, a nextgeneration, MEMS inertial navigation platform that features highperformance
More informationDESIGN AND DEVELOPMENT OF A DUAL OPERAT- ING MODE MICROSTRIP PATCH ANTENNA FOR UN- MANNED AERIAL VEHICLE SYNTHETIC APERTURE RADAR
Progress In Electromagnetics Research C, Vol. 27, 143 156, 2012 DESIGN AND DEVELOPMENT OF A DUAL OPERAT- ING MODE MICROSTRIP PATCH ANTENNA FOR UN- MANNED AERIAL VEHICLE SYNTHETIC APERTURE RADAR P. N. Tan,
More informationMonopulse Antenna. Figure 2: sectional picture of an antenna array of a monopulse antenna
Monopulse Antenna Figure 1: Principle of monopulse antenna Figure 2: sectional picture of an antenna array of a monopulse antenna Under this concept antennae are combined which are built up as an antenna
More informationOS3D-FG MINIATURE ATTITUDE & HEADING REFERENCE SYSTEM MINIATURE 3D ORIENTATION SENSOR OS3D-P. Datasheet Rev OS3D-FG Datasheet rev. 2.
OS3D-FG OS3D-FG MINIATURE ATTITUDE & HEADING REFERENCE SYSTEM MINIATURE 3D ORIENTATION SENSOR OS3D-P Datasheet Rev. 2.0 1 The Inertial Labs OS3D-FG is a multi-purpose miniature 3D orientation sensor Attitude
More informationGPS Based Attitude Determination for the Flying Laptop Satellite
GPS Based Attitude Determination for the Flying Laptop Satellite André Hauschild 1,3, Georg Grillmayer 2, Oliver Montenbruck 1, Markus Markgraf 1, Peter Vörsmann 3 1 DLR/GSOC, Oberpfaffenhofen, Germany
More informationPrinciples of Pulse-Doppler Radar p. 1 Types of Doppler Radar p. 1 Definitions p. 5 Doppler Shift p. 5 Translation to Zero Intermediate Frequency p.
Preface p. xv Principles of Pulse-Doppler Radar p. 1 Types of Doppler Radar p. 1 Definitions p. 5 Doppler Shift p. 5 Translation to Zero Intermediate Frequency p. 6 Doppler Ambiguities and Blind Speeds
More informationHardware in the Loop Simulation for Unmanned Aerial Vehicles
NATIONAL 1 AEROSPACE LABORATORIES BANGALORE-560 017 INDIA CSIR-NAL Hardware in the Loop Simulation for Unmanned Aerial Vehicles Shikha Jain Kamali C Scientist, Flight Mechanics and Control Division National
More informationAcknowledgment. Process of Atmospheric Radiation. Atmospheric Transmittance. Microwaves used by Radar GMAT Principles of Remote Sensing
GMAT 9600 Principles of Remote Sensing Week 4 Radar Background & Surface Interactions Acknowledgment Mike Chang Natural Resources Canada Process of Atmospheric Radiation Dr. Linlin Ge and Prof Bruce Forster
More informationMULTI-CHANNEL SAR EXPERIMENTS FROM THE SPACE AND FROM GROUND: POTENTIAL EVOLUTION OF PRESENT GENERATION SPACEBORNE SAR
3 nd International Workshop on Science and Applications of SAR Polarimetry and Polarimetric Interferometry POLinSAR 2007 January 25, 2007 ESA/ESRIN Frascati, Italy MULTI-CHANNEL SAR EXPERIMENTS FROM THE
More informationMinnesat: GPS Attitude Determination Experiments Onboard a Nanosatellite
SSC06-VII-7 : GPS Attitude Determination Experiments Onboard a Nanosatellite Vibhor L., Demoz Gebre-Egziabher, William L. Garrard, Jason J. Mintz, Jason V. Andersen, Ella S. Field, Vincent Jusuf, Abdul
More informationRemote Sensing Platforms
Types of Platforms Lighter-than-air Remote Sensing Platforms Free floating balloons Restricted by atmospheric conditions Used to acquire meteorological/atmospheric data Blimps/dirigibles Major role - news
More informationThe Potential of Synthetic Aperture Sonar in seafloor imaging
The Potential of Synthetic Aperture Sonar in seafloor imaging CM 2000/T:12 Ron McHugh Heriot-Watt University, Department of Computing and Electrical Engineering, Edinburgh, EH14 4AS, Scotland, U.K. Tel:
More informationRange Sensing strategies
Range Sensing strategies Active range sensors Ultrasound Laser range sensor Slides adopted from Siegwart and Nourbakhsh 4.1.6 Range Sensors (time of flight) (1) Large range distance measurement -> called
More informationA New Perspective to Altitude Acquire-and- Hold for Fixed Wing UAVs
Student Research Paper Conference Vol-1, No-1, Aug 2014 A New Perspective to Altitude Acquire-and- Hold for Fixed Wing UAVs Mansoor Ahsan Avionics Department, CAE NUST Risalpur, Pakistan mahsan@cae.nust.edu.pk
More informationSELF STABILIZING PLATFORM
SELF STABILIZING PLATFORM Shalaka Turalkar 1, Omkar Padvekar 2, Nikhil Chavan 3, Pritam Sawant 4 and Project Guide: Mr Prathamesh Indulkar 5. 1,2,3,4,5 Department of Electronics and Telecommunication,
More informationAirborne test results for a smart pushbroom imaging system with optoelectronic image correction
Airborne test results for a smart pushbroom imaging system with optoelectronic image correction V. Tchernykh a, S. Dyblenko a, K. Janschek a, K. Seifart b, B. Harnisch c a Technische Universität Dresden,
More informationFast Back Projection Algorithm for Bi-Static SAR Using Polar Coordinates
Fast Back Projection Algorithm for Bi-Static SAR Using Polar Coordinates Omer Mahmoud Salih Elhag This thesis is presented as part of Degree of Master of Science in Electrical Engineering Blekinge Institute
More informationGNSS for UAV Navigation. Sandy Kennedy Nov.15, 2016 ITSNT
GNSS for UAV Navigation Sandy Kennedy Nov.15, 2016 ITSNT Sounds Easy Enough Probably clear open sky conditions?» Maybe not on take off and landing Straight and level flight?» Not a valid assumption for
More informationPRODUCT OVERVIEW FOR THE. Corona 350 II FLIR SYSTEMS POLYTECH AB
PRODUCT OVERVIEW FOR THE Corona 350 II FLIR SYSTEMS POLYTECH AB Table of Contents Table of Contents... 1 Introduction... 2 Overview... 2 Purpose... 2 Airborne Data Acquisition and Management Software (ADAMS)...
More informationDURIP Distributed SDR testbed for Collaborative Research. Wednesday, November 19, 14
DURIP Distributed SDR testbed for Collaborative Research Distributed Software Defined Radar Testbed Collaborative research resource based on software defined radar (SDR) platforms that can adaptively modify
More informationHIGH-ACCURACY GYROCOMPASS
HIGH-ACCURACY GYROCOMPASS and INERTIAL NAVIGATION PRODUCTS NAVAL NAVIGATION LAND NAVIGATION & POINTING AIR NAVIGATION COMMERCIAL & INDUSTRIAL GEM elettronica is a leading European supplier in the design,
More information3DM -CV5-10 LORD DATASHEET. Inertial Measurement Unit (IMU) Product Highlights. Features and Benefits. Applications. Best in Class Performance
LORD DATASHEET 3DM -CV5-10 Inertial Measurement Unit (IMU) Product Highlights Triaxial accelerometer, gyroscope, and sensors achieve the optimal combination of measurement qualities Smallest, lightest,
More informationDIGITAL BEAM-FORMING ANTENNA OPTIMIZATION FOR REFLECTOR BASED SPACE DEBRIS RADAR SYSTEM
DIGITAL BEAM-FORMING ANTENNA OPTIMIZATION FOR REFLECTOR BASED SPACE DEBRIS RADAR SYSTEM A. Patyuchenko, M. Younis, G. Krieger German Aerospace Center (DLR), Microwaves and Radar Institute, Muenchner Strasse
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 informationUnmanned Aerial Vehicles: A New Approach for Coastal Habitat Assessment
Unmanned Aerial Vehicles: A New Approach for Coastal Habitat Assessment David Ryan Principal Marine Scientist WorleyParsons Western Operations 2 OUTLINE Importance of benthic habitat assessment. Common
More informationDesign and Manufacture of 8.4 m Primary Mirror Segments and Supports for the GMT
Design and Manufacture of 8.4 m Primary Mirror Segments and Supports for the GMT Introduction The primary mirror for the Giant Magellan telescope is made up an 8.4 meter symmetric central segment surrounded
More informationRobust Wideband Waveforms for Synthetic Aperture Radar (SAR) and Ground Moving Target Indication (GMTI) Applications
Robust Wideband Waveforms for Synthetic Aperture Radar (SAR) and Ground Moving Target Indication (GMTI) Applications DARPA SBIR Topic: SB82-2, Phase II Army Contract W31P4Q-11-C-43 Program Summary September
More informationSubmillimeter Pupil-Plane Wavefront Sensing
Submillimeter Pupil-Plane Wavefront Sensing E. Serabyn and J.K. Wallace Jet Propulsion Laboratory, 4800 Oak Grove Drive, California Institute of Technology, Pasadena, CA, 91109, USA Copyright 2010 Society
More informationTHE NASA/JPL AIRBORNE SYNTHETIC APERTURE RADAR SYSTEM. Yunling Lou, Yunjin Kim, and Jakob van Zyl
THE NASA/JPL AIRBORNE SYNTHETIC APERTURE RADAR SYSTEM Yunling Lou, Yunjin Kim, and Jakob van Zyl Jet Propulsion Laboratory California Institute of Technology 4800 Oak Grove Drive, MS 300-243 Pasadena,
More informationGPS-Aided INS Datasheet Rev. 2.6
GPS-Aided INS 1 GPS-Aided INS The Inertial Labs Single and Dual Antenna GPS-Aided Inertial Navigation System INS is new generation of fully-integrated, combined GPS, GLONASS, GALILEO and BEIDOU navigation
More informationDetection and Identification of Remotely Piloted Aircraft Systems Using Weather Radar
Microwave Remote Sensing Laboratory Detection and Identification of Remotely Piloted Aircraft Systems Using Weather Radar Krzysztof Orzel1 Siddhartan Govindasamy2, Andrew Bennett2 David Pepyne1 and Stephen
More informationOptical Correlator for Image Motion Compensation in the Focal Plane of a Satellite Camera
15 th IFAC Symposium on Automatic Control in Aerospace Bologna, September 6, 2001 Optical Correlator for Image Motion Compensation in the Focal Plane of a Satellite Camera K. Janschek, V. Tchernykh, -
More informationSpace-Time Adaptive Processing Using Sparse Arrays
Space-Time Adaptive Processing Using Sparse Arrays Michael Zatman 11 th Annual ASAP Workshop March 11 th -14 th 2003 This work was sponsored by the DARPA under Air Force Contract F19628-00-C-0002. Opinions,
More information3. give specific seminars on topics related to assigned drill problems
HIGH RESOLUTION AND IMAGING RADAR 1. Prerequisites Basic knowledge of radar principles. Good background in Mathematics and Physics. Basic knowledge of MATLAB programming. 2. Course format and dates The
More informationA Comparative Study on different AI Techniques towards Performance Evaluation in RRM(Radar Resource Management)
A Comparative Study on different AI Techniques towards Performance Evaluation in RRM(Radar Resource Management) Madhusudhan H.S, Assistant Professor, Department of Information Science & Engineering, VVIET,
More information3DM-GX3-45 Theory of Operation
Theory of Operation 8500-0016 Revision 001 3DM-GX3-45 Theory of Operation www.microstrain.com Little Sensors, Big Ideas 2012 by MicroStrain, Inc. 459 Hurricane Lane Williston, VT 05495 United States of
More information1.6 Beam Wander vs. Image Jitter
8 Chapter 1 1.6 Beam Wander vs. Image Jitter It is common at this point to look at beam wander and image jitter and ask what differentiates them. Consider a cooperative optical communication system that
More informationTHREE DIMENSIONAL FLASH LADAR FOCAL PLANES AND TIME DEPENDENT IMAGING
THREE DIMENSIONAL FLASH LADAR FOCAL PLANES AND TIME DEPENDENT IMAGING ROGER STETTNER, HOWARD BAILEY AND STEVEN SILVERMAN Advanced Scientific Concepts, Inc. 305 E. Haley St. Santa Barbara, CA 93103 ASC@advancedscientificconcepts.com
More informationBYU SAR: A LOW COST COMPACT SYNTHETIC APERTURE RADAR
BYU SAR: A LOW COST COMPACT SYNTHETIC APERTURE RADAR David G. Long, Bryan Jarrett, David V. Arnold, Jorge Cano ABSTRACT Synthetic Aperture Radar (SAR) systems are typically very complex and expensive.
More informationExecutive Summary. Development of a Functional Model
Development of a Functional Model Deutsches Zentrum für Luft- und Raumfahrt e.v. Institut für Hochfrequenztechnik und Radarsysteme Oberpfaffenhofen, Germany January 2001 Page 1 of 17 Contents 1 Introduction
More informationSynthetic Aperture Radar (SAR) images features clustering using Fuzzy c- means (FCM) clustering algorithm
Article Synthetic Aperture Radar (SAR) images features clustering using Fuzzy c- means (FCM) clustering algorithm Rashid Hussain Faculty of Engineering Science and Technology, Hamdard University, Karachi
More informationIntroduction to: Radio Navigational Aids
Introduction to: Radio Navigational Aids 1 Lecture Topics Basic Principles Radio Directional Finding (RDF) Radio Beacons Distance Measuring Equipment (DME) Instrument Landing System (ILS) Microwave Landing
More information