A GPS/SINU design for motion sensing and compensation using extended Kalman filter for airborne UAVSAR

Lim, C. H. and Koo, V. C. and Lim, T. S. and Tan, W. Q. and Lim, C. S. (2011) A GPS/SINU design for motion sensing and compensation using extended Kalman filter for airborne UAVSAR. Progress In Electromagnetics Research Symposium 2011 (PIERS2011),. pp. 1253-1257. ISSN 1559-9450

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Abstract

Synthetic Aperture Radar (SAR) is classified as one of the high resolution imaging system in microwave remote sensing. The operational elements of SAR, unlike optical sensing, consist of a large number of frequency-modulated received echoes which must be acquired in real-time. Recently, airborne unmanned aerial vehicle (UAV) was commonly appeared in SAR applications for data acquisition purposes. Assumption was made on the nominal trajectory of the airborne UAV to be straight line path. In reality, however, such assumption will not hold due to atmosphere turbulence and UAV’s motion error, which results in severe degradation in output images quality. In this paper, a global positioning system (GPS) aided strapdown inertial navigation unit (SINU) was used to sense and compensate the motion errors of the airborne UAVSAR. The GPS/SINU was mounted together with the airborne UAVSAR. The integration of GPS/SINU was modeled using extended Kalman filter. The results indicate the applicability and effectiveness of the proposed design.

Item Type: Article
Subjects: Q Science > Q Science (General)
Divisions: Faculty of Engineering and Technology (FET)
Depositing User: Ms Rosnani Abd Wahab
Date Deposited: 18 Dec 2013 06:24
Last Modified: 18 Dec 2013 06:24
URI: http://shdl.mmu.edu.my/id/eprint/4600

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