摘要
根据机载合成孔径雷达(SAR)成像原理,在高速信号处理系统的基础上,提出了一种可行的硬件实现方法,采用国际上通用的距离多普勒(RD)算法,使用Altera公司的FPGA器件实现距离(方位)压缩,并分析了系统的主要性能指标,给出了该系统的测试结果,利用该方法实现SAR成像,运算速度可达200MHz,取得满意成果。
This paper presents the principle of airborne Synthetic Aperture Radar(SAR) imaging and high-speed signals processing system. Then, the methods of hardware realization for distance (orientation) condensation are described. The RD arithmetic which is popular in the world is used, with FPGA device of Altera. The main technical parameters are also analyzed briefly. Finally, the results of the system are presented by the experiment. Using this method, the operation speed can be up to 200MHz,which is keeping ahead of China.
出处
《哈尔滨理工大学学报》
CAS
2004年第4期9-12,16,共5页
Journal of Harbin University of Science and Technology
关键词
机载SAR
FPGA器件
FFT
airborne Synthetic Aperture Radar
FPGA device
FFT
