HJ-1-C 卫星SAR 系统的内定标

基金项目:

国家重大科技专项工程资助课题

Internal Calibration of HJ-1-C Satellite SAR System

摘要: HJ-1-C 卫星是我国环境与灾害监测小卫星星座中的一颗合成孔径雷达(SAR)卫星，目前已在轨运行。其SAR 系统采用网状反射面天线和集中式功率放大器，且具有星上在轨内定标的功能。该文详细介绍了HJ-1-C 卫星SAR 系统的内定标模式和算法，给出内定标器的设计和实现原理，并对SAR 系统在轨工作内定标数据进行分析。
- HJ-1-C 卫星 /
- 合成孔径雷达(SAR) /
- 内定标 /
- 内定标器
Abstract: The HJ-1-C satellite is a Synthetic Aperture Radar (SAR) satellite of a small constellation for environmental and disaster monitoring. At present, it is in orbit and working well. The SAR system uses a mesh reflector antenna and centralized power amplifier, and has an internal calibration function in orbit. This study introduces the internal calibration modes and signal paths. The design and realization of the internal calibrator are discussed in detail. Finally, the internal calibration data acquired in orbit are also analyzed.
- HJ-1-C satellite /
- Synthetic Aperture Radar (SAR) /
- Internal calibration /
- Internal calibrator