卫星姿态指向抖动与SAR成像质量关系研究

Relationship Between Satellite Attitude Jitter and SAR Imaging Quality

建立了卫星姿态指向抖动的数学模型 ,基于成对回波畸变理论推导了存在姿态指向抖动时点目标扩展函数的解析表达式 ,提出了卫星姿态指向抖动幅度与星载SAR(合成孔径雷达 )成像质量关系的定量分析方法 ,为SAR卫星总体分析与设计提供了理论依据 .计算机仿真结果验证了结论的正确性 .

To provide a theoretical foundation for the design and analysis of spaceborne SAR, a method quantitatively analyzing the relationship between attitude distortion and spaceborne SAR imaging quality was developed, based on a mathematical model describing satellite attitude jitter and an expression of impulse response function for attitude jitter. The validity of the theoretical results was confirmed by computer simulation.