关键词: 相控阵, 机载合成孔径雷达, 运动补偿, DSP, FPGA

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