摘要
根据机载斜视SAR回波信号大距离走动小距离弯曲的特点,在时域校距离走动,这样距离和方位两维压缩可独立进行。距离走动校正由距离脉压时乘线性相位函数实现,同时采用鲁棒性较好的时域相关法和最大对比度法估计多普勒参数。该算法运算量小,编程容易,适合实时处理。对算法进行仿真,证明其在大斜视角下能精确成像。
The high squint SAR echoes can be compressed in range and azimuth separately according to their high range walk and small range curvature. Multiplying a linear phase function in range compression is employed to correct range walk.Followed by correlation in time domain and maxmum contrast are used to estimate Doppler parameters. The algorithm is easy to program in parallel processor and suitable for real-time processing. Finnally simulation verifies the algorithm.
出处
《现代雷达》
CSCD
北大核心
2005年第7期42-44,57,共4页
Modern Radar
