Volume 44 Issue 3
Jun.  2024
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Article Navigation >  Chinese Journal of Space Science  > 2024  >  44(3): 585-591 Open Access
LIU Zhiyong, LIU Sen, WANG Xi, ZHANG Shuiping. QX-1 GNOS M Radio Occultation Data Performance Analysis (in Chinese). Chinese Journal of Space Science, 2024, 44(3): 585-591 doi: 10.11728/cjss2024.03.2023-0071
Citation: LIU Zhiyong, LIU Sen, WANG Xi, ZHANG Shuiping. QX-1 GNOS M Radio Occultation Data Performance Analysis (in Chinese). Chinese Journal of Space Science, 2024, 44(3): 585-591 doi: 10.11728/cjss2024.03.2023-0071
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QX-1 GNOS M Radio Occultation Data Performance Analysis

doi: 10.11728/cjss2024.03.2023-0071 cstr: 32142.14.cjss2024.03.2023-0071
  • 1.

    School of Remote Sensing and Information Engineering, Wuhan University, Wuhan 430072

  • 2.

    Dongfanghong Satellite Co., Ltd., Beijing 100094

  • 3.

    School of Geoscience and Surveying Engineering, China University of Mining and Technology-Beijing, Beijing 100083

  • 4.

    College of Meteorology and Oceanography, National University of Defense Technology, Changsha 410073

  • Received Date: 2023-07-03
  • Accepted Date: 2024-05-13
  • Rev Recd Date: 2023-08-23
    • Available Online: 2023-09-25
    Abstract
  • QX-1 GNOS M is the first small commercial Global Navigation Satellite System (GNSS) occultation sounder to achieve on-orbit compatibility with BeiDou, GPS, and Galileo systems. On 14 October 2021, at 18:51 LT, the Meteorological Satellite-1 (QX-1) was launched and entered orbit. Since its launch, this satellite has collected a large amount of observational data. This paper provides a detailed introduction to the composition of QX-1 GNOS M and conducts a statistical analysis of the occultation events and their global distribution on 17 August 2022. By comparing the occultation data from 17 August to 3 September with the NCEP reanalysis model, the detection penetration depth and refractivity accuracy of QX-1 occultation events were evaluated, and the reliability and consistency of the Galileo occultation data were tested. Preliminary analysis results show that after achieving three-system compatibility, the number of occultation events detected by QX-1 GNOS M increased by approximately 1.5 times compared to using only the GPS system. This result further confirms that the occultation data provided by different GNSS systems are consistent in accuracy. Additionally, the study indicates that, in a multi-system compatibility context, QX-1 GNOS M can provide richer and more accurate meteorological and atmospheric data.

     

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