摘要
针对主星带伴随微小卫星编队SAR系统的模糊性问题,利用主星带伴随微小卫星编队SAR系统的空间几何关系,提出了一种该系统模糊度的工程计算方法。首先建立了主星与微小卫星构成的双站合成孔径雷达系统模型,然后结合微小卫星天线孔径小的特点,建立了距离模糊度和方位模糊度的计算表达式。仿真结果发现,主星到伴随微小卫星的距离对距离模糊度的影响较大,而对方位模糊度的影响较小,方位模糊度受微小卫星天线孔径大小的影响较大。
To analyse ambiguities of spaceborne parasitic SAR system, a calculational method of ambiguities has been proposed using the geometry of spaceborne parasitic SAR system. Firstly a geometric model of spaceborne parasitic SAR system is established. Then, in view of the smaller aperture of micro-satellite, the formulations of ambiguities are established. Results of simulation show that the range of the master satellite to micro-satellites has a greater effect on ambiguity in range but a smaller effect on ambiguity in azimuth, while aperture of micro-satellite has a greater effect on ambiguity in azimuth.
出处
《系统工程与电子技术》
EI
CSCD
北大核心
2004年第10期1429-1431,共3页
Systems Engineering and Electronics
