星载合成孔径雷达(SAR)斑马图仿真与研究

Simulation and Study of Zebra map of Spaceborne Synthetic Aperture Radar(SAR)

星载SAR中 ,要根据斑马图、距离模糊度和方位模糊度来选择脉冲重复频率 (PRF) ,因此斑马图非常重要。本文根据斑马图计算公式 ,并根据一定的卫星轨道和雷达参数 ,给出了斑马图仿真 ;同时讨论了信号脉宽、保护时间等因素对斑马图的影响 ,提出了自适应斑马图设计的方法 。

In spaceborne SAR system design, to determine the PRF, we must consider 'zebra' map, range ambiguity level and azimuth ambiguity level. So its design is very important. Simulation of zebra maps is given according to the spaceborne SAR orbit and the radar parameters. At the same time, the influence of signal pulse width, protection time and other factors on zebra map is discussed, the method of an adaptive zebra map is proposed, and the results of simulation are given.