摘要
卫星微波遥感系统正朝着多样化方向发展,高性能的大型卫星必不可少,但近年来低成本航天器发射技术正成为研究的热点之一。与此同时,小卫星微波遥感系统技术发展迅速,一些新的概念被提出并得到运用。研究快速响应星载SAR有效载荷技术,有利于提高突发重大灾害的应急监测能力。讨论了雷达模块化、低成本设计、参数优化方法、轨道高度选择和星上实时处理等对快速响应SAR有效载荷系统设计非常重要的技术途径。结合设计实例,给出一种低成本小型星载SAR有效载荷的解决方案和主要指标参数的优化设计方法。
The satellite microwave remote sensing technology is developing to multi-direction now. Research of rapidly responsive spaceborne SAR（RRS-SAR） is useful to enhance the ability of emergency surveillance of seriously outbreak disasters. In this paper, technologies of radar module design, low-cost system project, performance parameter optimization, orbit altitude selection and space based real-time processing are presented, which are most important to RRS-SAR payload system design. Then a low-cost small space-borne SAR design example is introduced preliminarily. The optimizing design methods of main performance parameters of the SAR system are discussed in detail.
出处
《雷达科学与技术》
2012年第5期471-475,480,共6页
Radar Science and Technology
基金
国家863高技术研究发展计划(No.2009AA12Z104)
关键词
合成孔径雷达(SAR)
快速响应
抛物反射面天线
行波管
synthetic aperture radar （SAR）
rapidly responsive payload
parabolic reflector antenna
traveling wave tube（TWT）
