NSSC OpenIR
中法海洋卫星微波散射计在轨性能验证
Alternative TitleOrbit Performances Validation for CFOSAT Scatterometer
董晓龙; 朱迪; 林文明; 张阔; 云日升; 刘建强; 郎姝燕; 丁振宇; 马剑英; 徐星欧
Source Publication空间科学学报
2020
Volume40Issue:3Pages:425-431; AR:0254-6124(2020)40:3<425:ZFHYWX>2.0.TX;2-Y
ISSN0254-6124
Language中文
Keyword中法海洋卫星 散射计 海面风场 后向散射系数 China-France Oceanography Satellite (CFOSAT) Scatterometer Sea surface winds Radar backscatter
Abstract中法海洋卫星(CFOSAT)微波散射计是国际上第一个旋转扇形波束体制散射计,通过优化雷达观测几何实现对地面目标多角度和多方位的高精度测量,提高海面风场、土壤湿度和海冰面积等地球物理参数的反演精度.根据CFOSAT卫星2018年10月发射以来的在轨测试数据,结合散射计系统特点,分析验证了星上定标数据和后向散射系数反演结果的正确性,并对CFOSAT首批科学数据进行了定量分析和系统评价.结果表明,CFOSAT散射计在轨工作状态良好,实际性能与设计预期一致,风速测量精度优于1.5 m·s~(-1),风向测量精度优于15°,空间分辨率可达12.5 km,在近岸风场监测、土壤湿度遥感和海冰面积估计等应用领域具有独特的优势.
Other AbstractThe first rotating fanbeam scatterometer onboard China-France Oceanography Satellite (CFOSAT) is able to observe Earth's surface at different incidence and azimuth angles using innovative observing geometry, and in turn to improve the retrieval of sea surface wind, soil moisture, sea ice extent, etc. After the CFOSAT was launched in October 2018, the performances of the CFOSAT Scatterometer (CSCAT) are being tested in orbit. This paper provides an overview of the CSCAT system, and then summarizes the key parameters of CSCAT tested in orbit, including calibration signal analyses, system noise analyses, and radar backscatter processing results analyses. Consequently, the first wind retrieval results of CSCAT are analyzed to assess the system performance. The wind speed accuracy of CSCAT is better than l.5m·s~(-1), and the wind direction accuracy is better than 15°. The special resolution is better than 12.5km. All these results show that CSCAT generally works well in orbit and has a unique advantage in the monitoring of nearshore winds, soil moisture, and sea ice extent.
Indexed ByCSCD
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Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/7446
Collection中国科学院国家空间科学中心
Affiliation1.董晓龙, 中国科学院国家空间科学中心
2.中国科学院大学, 北京
3.北京 100190
4.100049, 中国.
5.张阔, 中国科学院国家空间科学中心
6.中国科学院大学, 北京
7.北京 100190
8.100049, 中国.
9.朱迪, 中国科学院国家空间科学中心, 北京 100190, 中国.
10.云日升, 中国科学院国家空间科学中心, 北京 100190, 中国.
11.马剑英, 中国科学院国家空间科学中心, 北京 100190, 中国.
12.徐星欧, 中国科学院国家空间科学中心, 北京 100190, 中国.
13.林文明, 南京信息工程大学海洋科学学院, 南京, 江苏 210044, 中国.
14.刘建强, 自然资源部国家卫星海洋应用中心, 北京 100081, 中国.
15.郎姝燕, 自然资源部国家卫星海洋应用中心, 北京 100081, 中国.
16.丁振宇, 航天东方红卫星有限公司, 北京 100094, 中国.
17.Dong Xiaolong, National Space Science Center, Chinese Academy of Sciences
18.University of Chinese Academy of Sciences, Beijing
19.Beijing 100190
20.100049.
21.Zhang Kuo, National Space Science Center, Chinese Academy of Sciences
22.University of Chinese Academy of Sciences, Beijing
23.Beijing 100190
24.100049.
25.Zhu Di, National Space Science Center, Chinese Academy of Sciences, Beijing 100190, China.
26.Yun Risheng, National Space Science Center, Chinese Academy of Sciences, Beijing 100190, China.
27.Ma Jianying, National Space Science Center, Chinese Academy of Sciences, Beijing 100190, China.
28.Xu Xingou, National Space Science Center, Chinese Academy of Sciences, Beijing 100190, China.
29.Lin Wenming, School of Marine Sciences, Nanjing University of Information Science and Technology, Nanjing, Jiangsu 210044, China.
30.Liu Jianqiang, National Satellite Oceanic Application Service, Ministry of Natural Resources, Beijing 100081, China.
31.Lang Shuyan, National Satellite Oceanic Application Service, Ministry of Natural Resources, Beijing 100081, China.
32.Ding Zhenyu, DFH Satellite Co., Ltd., Beijing 100094, China.
33.zhudi@mirslab.cn
Recommended Citation
GB/T 7714
董晓龙,朱迪,林文明,等. 中法海洋卫星微波散射计在轨性能验证[J]. 空间科学学报,2020,40(3):425-431; AR:0254-6124(2020)40:3<425:ZFHYWX>2.0.TX;2-Y.
APA 董晓龙.,朱迪.,林文明.,张阔.,云日升.,...&徐星欧.(2020).中法海洋卫星微波散射计在轨性能验证.空间科学学报,40(3),425-431; AR:0254-6124(2020)40:3<425:ZFHYWX>2.0.TX;2-Y.
MLA 董晓龙,et al."中法海洋卫星微波散射计在轨性能验证".空间科学学报 40.3(2020):425-431; AR:0254-6124(2020)40:3<425:ZFHYWX>2.0.TX;2-Y.
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