摘要
讨论了星载合成孔径雷达(SAR)的基本信号模型,针对这一模型提出了应用匹配傅里叶变换估计SAR多普勒参数的新方法。文中给出了理论分析和仿真,并用星载SAR回波实际数据进行了多普勒参数估计,根据估计的多普勒参数给出了成像结果,表明了用该方法对SAR数据进行处理可估计出多普勒参数,且精度高。
A basic signal model of spaceborne SAR was discussed. According to the model, a new method of Doppler parameter estimation for SAR was proposed. At the same time, theoretical analyses and simulation results were given. In addition, the estimation Doppler parameter was made with the spaceborne SAR experimental echo data. The imaging results of SAR were finally obtained from the estimated Doppler parameter. Simulated results and the images prove that the method can execute blind processing for SAR data and can efficiently estimate Doppler parameters, and show that high precision of estimation is obtained.
出处
《兵工学报》
EI
CAS
CSCD
北大核心
2005年第3期429-432,共4页
Acta Armamentarii
基金
国防科技重点实验室基金项目 (5 14 42 0 10 10 1DZ2 40 1)
关键词
雷达工程
匹配傅里叶变换
多普勒参数估计
匹配傅里叶频率
radar engineering
matched Fourier transform
Doppler parameter estimation
frequency of matched Fourier transform
