Publication Date:
2018-07-17
Description:
Remote Sensing, Vol. 10, Pages 1124: A Compensation Method for Airborne SAR with Varying Accelerated Motion Error Remote Sensing doi: 10.3390/rs10071124 Authors: Tianzhu Yi Zhihua He Feng He Zhen Dong Manqing Wu Yongping Song Motion error is one of the most serious problems in airborne synthetic aperture radar (SAR) data processing. For a smoothly distributing backscatter scene or a seriously speed-varying velocity platform, the autofocusing performances of conventional algorithms, e.g., map-drift (MD) or phase gradient autofocus (PGA) are limited by their estimators. In this paper, combining the trajectories measured by global position system (GPS) and inertial navigation system (INS), we propose a novel error compensation method for varying accelerated airborne SAR based on the best linear unbiased estimation (BLUE). The proposed compensating method is particularly intended for varying acceleration SAR or homogeneous backscatter scenes, the processing procedures and computational cost of which are much simpler and lower than those of MD and PGA algorithms.
Electronic ISSN:
2072-4292
Topics:
Architecture, Civil Engineering, Surveying
,
Geography
Permalink