薛莲¹, 周鹏¹, 张振华², 王影², 张晰³, 韩倩倩²
1.中国石油大学(华东) 海洋与空间信息学院, 山东 青岛 266580;2.北京遥测技术研究所, 北京 100076;3.自然资源部第一海洋研究所, 山东 青岛 266061

摘要:
多模式小卫星SAR（synthetic aperture radar，合成孔径雷达）是一种搭载于小卫星平台的新体制雷达系统，它集SAR、散射计、高度计、波谱仪4种遥感器的优势于一身。它可以根据需求分时实现几种工作模式的切换，可兼顾对海洋目标和海洋动力环境的高精度测量。由于卫星发射存在诸多不确定因素，为了在卫星发射前对多模式小卫星SAR进行检验，本文对拟开展的机载挂飞试验进行了介绍。首先，介绍了拟开展的机载挂飞试验的等效性原则。接下来，介绍了各种工作模式试验、SAR/散射计联合反演试验、多视向SAR试验的飞行路线规划。之后，介绍了机载挂飞试验的雷达参数设计方法。最后，给出了各种工作模式的雷达参数设计结果。所设计的飞行路线和雷达参数可以为机载挂飞试验服务，并且实现了星载技术指标的准等效验证。通过小卫星SAR卫星组网可弥补目前SAR卫星时间分辨率低的缺点。
关键词:多模式小卫星SAR机载挂飞试验飞行路线规划雷达参数设计卫星组网
DOI：10.11759/hykx20210208003
分类号:TP955
基金项目:国家重点研发计划项目（2017YFC1405600）；山东省自然科学基金（ZR2019MF004）；国家海洋局海洋遥测工程技术中心创新青年基金项目（2017003）；自然资源部第一海洋研究所资助项目（N1705037）

Flight paths planning and radar parameters design of airborne flight test for multi-mode small satellite SARs
XUE Lian¹, ZHOU Peng¹, ZHANG Zhen-hua², WANG Ying², ZHANG Xi³, HAN Qian-qian²
1.China University of Petroleum, College of Oceanography and Space Informatics, Qingdao 266580, China;2.Beijing Research Institute of Telemetry, Beijing 100076, China;3.First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China
Abstract:
Multi-mode small satellite SAR (synthetic aperture radar) is a new type of radar which can operate in SAR, altimeter, scatterometer and spectrometer modes in time-sharing manner. It can be used to measure both marine targets and marine dynamic environment with high precision. Because of many uncertain factors in satellite launch, in order to test the multi-mode Small Satellite SAR before satellite launch, this paper introduces the airborne flying test to be carried out. Firstly, the equivalence principle of the airborne flight test is introduced. Next, the flight paths planning of various operation mode tests, SAR/scatterometer joint inversion tests and multi direction SAR tests are introduced. Then, the design method of radar parameters for the airborne flight test is introduced. Finally, the radar parameter design results of various operation modes are given. The designed flight paths and calculated radar parameters provide an important basis for the airborne flight test. It realizes the quasi equivalent verification of spaceborne technical specifications. The shortage of low temporal resolution of SAR satellites can be solved by networking small satellite SARs.
Key words:multi-mode small satellite SARsairborne flight testflight path planningradar parameter designsatellite networking





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