星地双基合成孔径雷达聚束模式快速BP算法

基金项目:

中国科学院百人计划项目(6065-07)资助课题

A Fast Back Projection Algorithm for Spotlight Mode Bi-SAR Imaging

1.
(Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China)
2.
(University of Chinese Academy of Sciences, Beijing 100049, China)

摘要: 该文提出了一种应用于双基合成孔径雷达聚束模式的快速反向投影(FBP)算法，该算法在距离向压缩上使用地面接收器的同步信道作为回波信号的距离向匹配滤波器，在方位向压缩上采用2 次相位校正降低快速BP 算法中的近似误差对成像造成的影响，算法的计算复杂度为O(N2.5)。最后利用仿真数据和实测数据在图形处理器(GPU)上对该算法进行了验证。
- 双基合成孔径雷达(Bi-SAR) /
- 快速反投影算法(FBPA) /
- 计算复杂度 /
- 图形处理单元(GPU)
Abstract: A Fast Back Projection (FBP) algorithm for spotlight mode Bistatic Synthetic Aperture Radar (Bi-SAR) was presented. Sync channel signal from land receiver was taken as matched filter for echo signal in the phase of range compression, and the secondary phase calibration decreased the approximation error effects for FBP algorithm in the phase of azimuth compression. Computational complexity of this algorithm was O(N2.5 ). In addition, this algorithm was validated on Graphic Processing Unit (GPU) by simulation data and measured data.
- Bistatic Synthetic Aperture Radar (Bi-SAR) /
- Fast Back Projection Algorithm (FBPA) /
- Computational complexity /
- Graphic Processing Unit (GPU)