合成孔径雷达卫星系统任务分析方法研究

Mission Analysis for Synthetic Aperture Radar Satellite System

系统地总结了围内外合成孔径雷达(SAR)卫星的发展现状及趋势,提出了大视角双侧视SAR卫星的新概念。针对SAR卫星有效载荷的特点,从用户需求分析和关键约束条件入手,研究了卫星轨道设计与覆盖性能分析方法,总结了雷达波位参数设计和系统性能分析方法,提出了SAR卫星系统星地一体化任务分析方法。通过计算机仿真,对大视角双侧视SAR卫星概念进行了初步可行性分析。

The development of Synthetic Aperture Radar （SAR） satellite is summarized. A new concept of high-elevation angle, double-side looking SAR satellite system is introduced According to the analysis of the users＇ requirements and the key technical restriction, the performance of radar coverage is analyzed with the optimal orbital elements design for SAR satellite, and the beam position parameters design and system performance analysis are implemented. The space-ground integration approach of mission analysis for SAR satellite is proposed, basing on the characteristics of SAR payload. The computer simulation results are presented, which illustrates the validation of the new approach and the feasibility of high-elevation angle, double-side looking SAR satellite concept.