上海航天（中英文）2024，Vol.41Issue(4)：67-75,9.DOI:10.19328/j.cnki.2096-8655.2024.04.009
基于多频子脉冲的中轨星载高分宽幅SAR系统设计方法
Design Method for MEO-HRWS-SAR System Based on MFSPs
摘要
Abstract
In the process of designing the medium Earth orbit(MEO)spaceborne high resolution and wide swath(HRWS)synthetic aperture radar(SAR)(MEO-HRWS-SAR)system based on multiple frequency sub-pulses(MFSPs),there are a series of problems such as global coverage,low visibility,two-dimensional(2D)defuzzification along the distance azimuth,and system complexity optimization.In this paper,a three-layer design idea,i.e.,orbit,architecture,and then parameters,is proposed.The two-dimensional fuzzy suppression and system optimization are carried out with space,time,frequency,etc.The typical low Earth orbit(LEO)SAR system is used as the reference system to complete the design of MEO-HRWS-SAR system,and the HRWS SAR imaging is realized on the MEO platform.In addition,the temporal resolution of Earth observation on the spaceborne platform is greatly improved.Finally,the validity of the design method is verified by simulation.The proposed design method has certain engineering application value.关键词
轨道设计/架构设计/参数设计/下视可见性/二维解模糊/全球覆盖Key words
orbit design/architecture design/parametric design/downward-looking visibility/two-dimensional(2D)defuzzification/global coverage分类
信息技术与安全科学引用本文复制引用
沈义龙,汤楚蘅,陆晴,张双喜..基于多频子脉冲的中轨星载高分宽幅SAR系统设计方法[J].上海航天（中英文）,2024,41(4):67-75,9.基金项目
上海航天科技创新基金(SAST2021-042、SAST2022-045) （SAST2021-042、SAST2022-045）
国家自然科学基金(62271406) （62271406）
