摘要
针对发射机固定的斜视双基地SAR新成像雷达体制,建立了雷达信号的回波模型,推导了此模型下的非线性Chirp Scaling算法(NLCSA)。仿真证明,该算法可对双基地SAR在较大的斜视角下,不进行插值操作而实现精确的距离徙动校正,得到聚焦良好的SAR图像,其处理速度快,非常适合斜视双基地SAR的高速并行信号处理。
This paper gives the echo signal model for a new bistatic SAR imaging system with fixed transmitter in squint mode. A non linear chirp scaling algorithm based on this model is presented. Finally, the simulation results show that this algorithm can perform range cell migration correction（RCMC） accurately without any interpolation in a squint bistatic system and thus can obtain well-focused SAR image, so it is suitable for real-time parallel processing of signal.
出处
《雷达科学与技术》
2006年第1期27-30,共4页
Radar Science and Technology
