摘要
高分三号(GF-3)卫星为满足多样化的用户需求,其合成孔径雷达(SAR)载荷具有高分辨率、宽覆盖、多极化、多工作模式、高图像质量等特点,设计难度大。文章进行了任务需求分析,确定了SAR载荷总体实现方案,给出了SAR各工作模式的设计。在此基础上,进一步给出了SAR载荷的设计,即采用大规模有源相控阵天线技术,并结合灵活的中央电子设备,使其能够实现复杂工作模式下的高质量成像,满足任务需求。
Considering the different requirements from multiple users,SAR payload of GF-3 sate-llite has the characteristics of high resolution,large observing swath,multiple polarization,mul-tiple working mode and high image quality,which bring great challenges to the design of SAR payload.The paper describes the SAR payload for the GF-3 satellite.Based on the requirement analysis,the overall realization scheme is determined and the working mode design is given.Fur-thermore,the design of SAR payload is described.Using a deployable planar active phased array antenna and the configurable electronics subsystem,the SAR payload has the abilities to obtain high-quality images and meet the requirements of mission.
出处
《航天器工程》
CSCD
北大核心
2017年第6期61-67,共7页
Spacecraft Engineering
基金
国家重大科技专项工程
