航天器工程2025，Vol.34Issue(3)：72-81,10.DOI:10.3969/j.issn.1673-8748.2025.03.010
5米S-SAR卫星SAR载荷设计与实现
Design and Implementation of SAR Payload for 5m S-SAR Satellite
倪江 1禹卫东 2王楠 1郑明洁 1张华春2
作者信息
- 1. 中国科学院空天信息创新研究院,北京 100094
- 2. 中国科学院空天信息创新研究院,北京 100094||中国科学院大学 电子电气与通信工程学院,北京 100049
- 折叠
摘要
Abstract
The synthetic aperture radar(SAR)on 5m S-band SAR(S-SAR)satellite is the first space-borne full-polarization SAR based on reflector antenna with phased array feed in China.The SAR payload operates at S-band with the highest resolution of 5m,and the widest swath of 200km.Based on the design conception of low mass and low power consumption,its main techni-cal features are as follows:adopting a large deployable dual-focus and dual-polarization phased ar-ray feed reflector antenna system,with a reflector antenna aperture of 9.40m×3.75m,and with 16 dual-polarization feeds arranged along the range direction on the focal plane.The horn array is excited by T/R modules developed using high-efficiency domestically produced GaN devices,with a single channel transmission power of 200W and a total radar transmitting power of over 3200W after spatial synthesis.The payload weights 252kg and has a peak power consumption of 1210W.The on-orbit test results show that the performance of SAR payload meets or exceeds the design requirements and acquires S-band SAR images containing rich ground object information with high image quality.关键词
5米S频段合成孔径雷达卫星/相控阵馈源/双焦点反射面天线/收发组件/内定标/全温试验Key words
5m S-SAR satellite/phased array feed/dual-focus reflector antenna/T/R module/inter-nal calibration/full temperature range test分类
信息技术与安全科学引用本文复制引用
倪江,禹卫东,王楠,郑明洁,张华春..5米S-SAR卫星SAR载荷设计与实现[J].航天器工程,2025,34(3):72-81,10.
