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Chinese Journal of Space Science ›› 2017, Vol. 37 ›› Issue (2): 207-213.doi: 10.11728/cjss2017.02.207

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Simulation Study on GRO and LRO Events

WANG Shuzhi, LIU Congliang, ZHU Guangwu, BAI Weihua, DU Qifei, SUN Yueqiang, XIA Junming, MENG Xiangguang, WANG Xianyi, ZHAO Danyang, WANG Dongwei, CAI Yuerong, WU Di   

  1. National Space Science Center, Chinese Academy of Sciences, Beijing 100190
  • Received:2016-03-24 Revised:2016-04-07 Online:2017-03-15 Published:2017-03-02

Abstract:

Combining the GRO (Global Navigation Satellite System Radio Occultation) and LRO (Low Earth Orbit Radio Occultation) techniques to probe the Earth's atmosphere is a main development direction of RO (Radio Occultation). In this study, the mathematical criteria of a RO event have been described. Then the effects of the main orbit parameters of LEO satellite on the RO events amount and their global distribution have been discussed by a simulation study. The results showed that:the lower the LEO satellite orbit is, the more GRO events are; when the inclination is between 30° and 75°, there are more GRO events and their Earth coverage is higher. The LRO events distribute on the Earth evenly when the LEO-LEO RO satellite set in the polar orbits. This study can provide a scientific reference for GRO and LRO satellite constellation design.

Key words: Radio occultation event, Global Navigation Satellite System Radio Occultation (GRO), Low Earth Orbit Radio Occultation (LRO), Low Earth Orbit (LEO), Orbit parameter

CLC Number: