An airborne SAR motion compensation algorithm based on array scanning and its implementation

doi:10.7523/j.issn.2095-6134.2010.1.010

›› 2010, Vol. 27 ›› Issue (1): 70-75.DOI: 10.7523/j.issn.2095-6134.2010.1.010

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An airborne SAR motion compensation algorithm based on array scanning and its implementation

LI Xin-Wei^1,2, ZHANG Ping¹, ZHU Lei³

1. Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China;
2. Graduate University, Chinese Academy of Sciences, Beijing 100190, China;
3. Army Aviation Department of General Staff Headquarters of the PLA, Beijing 100012, China

Received:2009-03-13 Revised:2009-09-16 Online:2010-01-15

Abstract

Abstract:

Phased array radar is the main direction in the development of airborne SAR, and the motion compensation system is essential to the airborne SAR system. By deploying the coordinate mapping method, the target beam under the earth coordinate system is mapped into the antenna platform coordinate system and converted to the antenna array element phase shift which controls the beam. The airborne SAR motion compensation is then implemented. The algorithm is implemented by using DSP and FPGA. The experimental results show that the designed hardware and software are reliable.

Key words: phased array, airborne SAR, motion compensation, DSP, FPGA

CLC Number:

TP273.5

LI Xin-Wei, ZHANG Ping, ZHU Lei. An airborne SAR motion compensation algorithm based on array scanning and its implementation[J]. , 2010, 27(1): 70-75.

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An airborne SAR motion compensation algorithm based on array scanning and its implementation

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