Volume 42 Issue 3
Jun.  2022
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LUO Aobo, LONG Yanfei, CHEN Lihu, FANG Hanxian, YU Sunquan, Ni Jiushun. TEC Measurement Method Based on Space-based AIS Data (in Chinese). Chinese Journal of Space Science, 2022, 42(3): 366-375. DOI: 10.11728/cjss2022.03.210325037
Citation: LUO Aobo, LONG Yanfei, CHEN Lihu, FANG Hanxian, YU Sunquan, Ni Jiushun. TEC Measurement Method Based on Space-based AIS Data (in Chinese). Chinese Journal of Space Science, 2022, 42(3): 366-375. DOI: 10.11728/cjss2022.03.210325037

TEC Measurement Method Based on Space-based AIS Data

doi: 10.11728/cjss2022.03.210325037
  • Received Date: 2021-03-25
  • Accepted Date: 2021-05-21
  • Rev Recd Date: 2022-01-07
  • Available Online: 2022-05-24
  • A method to calculate the Total Electron Content (TEC) of the global ionosphere is proposed based on the Automatic Identification System (AIS) for ships on board. Specifically, The Faraday rotation angle of AIS signal passing through the ionosphere is measured by carrying two mutually perpendicular linearly polarized antennas on the satellite, and then estimate TEC by the relationship between the Faraday rotation angle and the TEC. The experimental validation based on the AIS data from Tiantuo V satellite is carried out, and the effects of hardware equipment errors and observation parameter errors on the results are analyzed. Experiments show that the difference between the TEC value measured by the method and by the Global Positioning System (GPS) is 0.762 TECU on average, which proves the feasibility of this method. Compared with the existing TEC measurement methods, this method only needs to use the existing AIS system without deploying ground stations, which can significantly improve the data update rate.

     

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