【摘要】 研究了发射和接收分离的双站合成孔径雷达成像算法.主要分析了双站合成孔径雷达在平飞斜视工作模式下的方位分辨率,以及二次距离徙动校正判据,研究了利用非线性Ch irp Sca ling(NLCS)的方法,来消除同一距离单元上的不同方位调频斜率带来的影响,并且推导出了平飞斜视模式下的方位匹配滤波函数的频域表示,通过点目标成像仿真验证了该方法的正确性.更多还原

【Abstract】 The imaging algorithms for bistatic synthetic aperture radar(SAR)are researched.For parallel flight and squint model in the bistatic SAR systems,the azimuth resolution and quadratic range migration correction criterion are studied in detail in this paper.The method of nonlinear chirp scaling is adopted to equalize the different FM rates in the same range cell.The point target response is transformed into frequency domain response and the azimuth compression reference function is deduced at length.The algorithm is validated by the simulation experiments of point targets.更多还原