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《Chinese Journal of Geophysics》 2006-01
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Mountain-based GPS observations of occultation and its inversion theory

HU Xiong~1, ZHANG Xun-Xie~(1,2), WU Xiao-Cheng~(1,2,3), XIAO Cun-Ying~(1,2,3), ZENG Zhen~4, Gong Xiao-Yan~(1,3)1 Center for Space Science and Applied Research, Chinese Academy of Sciences, Beijing 100080, China2 Wuhan Institute of Physics and Math, Chinese Academy of Sciences, Wuhan 430071, China3 Graduate School, Chinese Academy of Sciences, Beijing 100049, China4 University Corporation for Atmospheric Research, Colorado, USA  
Mountain-based GPS radio occultation observations were conducted at the Yaogu mountain and Jiugong mountain in Hubei province, respectively. Occultation event data were successfully obtained. Analysis and statistics of the occultation events have been completed. The principle and methods estimating bending angles of the radio rays and atmospheric refractivity profiles with the mountain-based radio occultation data are given. The simulation data of mountain-based occultation events are used for testing the inversion method. Testing results show that the inversion method is efficient. The atmospheric refractivity profiles below the height of the GPS receiver are obtained with this inversion technique, as well as the bending angle of rays. The results suggest that the mountain-based occultation technique is a potential new method for monitoring lower atmospheric environments.(
【Fund】: 国家自然科学基金项目(40204011);; 中国科学院知识创新工程重要方向项目(KJCX2-SW-T1)资助.
【CateGory Index】: P406
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