星载聚束SAR系统顶层参数优化设计

Top-level parameters optimization design for space-borne spotlight SAR system

摘要:

聚束模式是合成孔径雷达(SAR)的一种比较特殊的工作方式，可以获得普通条带模式难以达到的超高分辨率图像。本文以高分辨率星载聚束SAR系统顶层参数设计为主要出发点，结合详细的系统设计与仿真分析过程，分析了聚束模式下大距离徙动、脉冲重复频率(PRF)选取、天线方向图设计等多方面的系统设计影响因素，能够为星载聚束SAR顶层参数设计提供有效参考。

Abstract:

Spotlight mode is a special mode of Synthetic Aperture Radar(SAR), which can achieve higher resolution image than the ordinary strip-mode SAR. Starting from the top-level parameters design of high resolution space-borne spotlight SAR system, combining with the detailed analysis of system design and simulation process, many influence factors including long migration distance, Pulse Repetition Frequency(PRF), antenna pattern on spotlight SAR system design are analyzed. This work can provide a reference for space-borne spotlight SAR top-level parameters design.