Research on Motion Compensation for Airborne Forward Looking Synthetic Aperture Radar with Linear Array Antennas
Zhang Ying-jie①② Wang Yan-ping① Tan Wei-xian① Hong Wen①
①(National Key Laboratory of Science and Technology on Microwave Imaging, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China) ②(University of Chinese Academy of Sciences, Beijing 100190, China)
Abstract：Combined with Frequency-Modulated Continuous-Wave (FMCW) technology, airborne forward-looking Synthetic Aperture Radar (SAR) with linear array antennas can obtain the image in front of the aircraft and also have the advantages of FMCW radar such as small size and lightweight. Moreover, it is suitable to be installed on platform like helicopter and small unmanned aerial vehicle. Motion compensation for forward-looking SAR with linear array antennas is one of the key problems to obtain the image in front of the aircraft in practice. This paper analyses the influence of motion error in aircraft on echo model based on the geometry of forward looking SAR with linear array antennas, and proposes a motion compensation scheme. Moreover, the compensation scheme is applicable to an improved frequency scaling algorithm (FSA) for FMCW forward looking SAR with linear array antennas. Finally, the compensation scheme is verified with the simulation.
张英杰, 王彦平, 谭维贤, 洪文. 机载前视阵列SAR 运动补偿研究[J]. 雷达学报, 2013, 2(2): 168-179.
Zhang Ying-jie, Wang Yan-ping, Tan Wei-xian, Hong Wen. Research on Motion Compensation for Airborne Forward Looking Synthetic Aperture Radar with Linear Array Antennas. JOURNAL OF RADARS, 2013, 2(2): 168-179.
