距离-多普勒相对位置法的改进研究

Improvement research on the R-D relative location method

距离-多普勒定位算法被广泛地应用于星载SAR对地面目标的定位研究中。本文在相对位置法的基础上提出了一种改进方法,并在此基础上以某地区的Radarsat-1图像为例,对该方法进行了仿真研究。结果表明,该改进方法的定位误差小于相对位置法的定位误差,说明该方法可以在相对位置法的基础上进一步提高星载SAR对地面目标的定位精度。

Range-Doppler（R-D） location algorithm is widely used in space-borne SAR location research. Based on the relative location method, this paper presents an improved method, and takes the picture of Radarsat-1 as an example to simulate it. The results show that the location error of this improvement method is less than that of the original method, which illustrate that the improved method can increase the location accuracy of space-borne SAR further more.