在双站聚束式合成孔径雷达系统设计中,分辨率是一个关键的参考因素。当发射站和接收站分别位于不同高度但飞行轨迹地面投影平行的两条航迹中时,建立了一种机载双站聚束式合成孔径雷达系统空间几何数学建模。同时对双站聚束式SAR的方位分辨率进行了理论分析和数值仿真,讨论了不同初始条件对双站聚束模式SAR系统分辨率的影响。仿真结果表明,双站聚束式SAR分辨率不仅与雷达工作波长、雷达转视角有关,而且与发射机以及接收机相对位置有关。

In Bistatic spotlight SAR design,azimuth resolution is a key factor.The theoretical analysis in this paper is based on the space geometry model,the transmitter and receiver fly on different platforms and at different height,two flight paths are parallel.Then demonstrate the equation of the azimuth resolution of the Air-born bistatic spotlight synthetic aperture radar.After the simulation and the theoretical analysis of the system,the influence of different initial conditions is discussed on the system azimuth resolution.The simulation results indicate that the azimuth resolution is determined not only by radar wavelength,LOS angle,but also by the position of transmitter and receiver.

TN958