Volume 40 Issue 3
May  2020
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DONG Xiaolong, ZHU Di, LIN Wenming, ZHANG Kuo, YUN Risheng, LIU Jianqiang, LANG Shuyan, DING Zhenyu, MA Jianying, XU Xingou. Orbit Performances Validation for CFOSAT Scatterometer[J]. Chinese Journal of Space Science, 2020, 40(3): 425-431. doi: 10.11728/cjss2020.03.425
Citation: DONG Xiaolong, ZHU Di, LIN Wenming, ZHANG Kuo, YUN Risheng, LIU Jianqiang, LANG Shuyan, DING Zhenyu, MA Jianying, XU Xingou. Orbit Performances Validation for CFOSAT Scatterometer[J]. Chinese Journal of Space Science, 2020, 40(3): 425-431. doi: 10.11728/cjss2020.03.425

Orbit Performances Validation for CFOSAT Scatterometer

doi: 10.11728/cjss2020.03.425
  • Received Date: 2020-03-13
  • Rev Recd Date: 2020-04-01
  • Publish Date: 2020-05-15
  • The 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 1.5m·-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.

     

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