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An introduction to China FY3 radio occultation mission and its measurement simulation
Bi, YanMeng; Yang, ZhongDong; Zhang, Peng; Sun, YueQiang; Bai, WeiHua; Du, QiFei; Yang, GuangLin; Chen, Jie; Liao, Mi; Bi, YM (reprint author), Natl Satellite Meteorol Ctr, Beijing 100081, Peoples R China.
Department空间环境部
Source PublicationADVANCES IN SPACE RESEARCH
2012
Volume49Issue:7Pages:1191-1197
ISSN0273-1177
Language英语
KeywordRemote Sensing Radio Occultation Gnos Fy3-c
AbstractGNSS (Global Navigation Satellite System) radio occultation mission for remote sensing of the Earth's atmosphere will be performed by GNUS (GNSS Occultation Sounder) instrument on China FengYun-3 (FY3) 02 series satellites, the first of which FY3-C will be launched in the year 2013. This paper describes the FY3 GNUS mission and presents some results of measurement simulation. The key designed specifications of GNUS are also shown. The main objective of simulation is to provide scientific support for GNUS occultation mission on the FY3-C satellites. We used EGOPS software to simulate occultation measurements according to GNOS designed parameters. We analyzed the accuracy of retrieval profiles based on two typical occultation events occurring in China South East area among total simulated events. Comparisons between the retrieval atmospheric profiles and background profiles show that GNUS occultation has high accuracy in the troposphere and lower stratosphere. The sensitivities of refractivity to three types of instrumental error, i.e. Doppler biases, clock stability and local multipath, were analyzed. The results indicated that the Doppler biases introduced by along-ray velocity error and GNUS clock error were the primary error sources for FY3-C occultation mission. (C) 2012 COSPAR. Published by Elsevier Ltd. All rights reserved.; GNSS (Global Navigation Satellite System) radio occultation mission for remote sensing of the Earth's atmosphere will be performed by GNUS (GNSS Occultation Sounder) instrument on China FengYun-3 (FY3) 02 series satellites, the first of which FY3-C will be launched in the year 2013. This paper describes the FY3 GNUS mission and presents some results of measurement simulation. The key designed specifications of GNUS are also shown. The main objective of simulation is to provide scientific support for GNUS occultation mission on the FY3-C satellites. We used EGOPS software to simulate occultation measurements according to GNOS designed parameters. We analyzed the accuracy of retrieval profiles based on two typical occultation events occurring in China South East area among total simulated events. Comparisons between the retrieval atmospheric profiles and background profiles show that GNUS occultation has high accuracy in the troposphere and lower stratosphere. The sensitivities of refractivity to three types of instrumental error, i.e. Doppler biases, clock stability and local multipath, were analyzed. The results indicated that the Doppler biases introduced by along-ray velocity error and GNUS clock error were the primary error sources for FY3-C occultation mission. (C) 2012 COSPAR. Published by Elsevier Ltd. All rights reserved.
Indexed BySCI ; EI
Funding Project中国科学院空间科学与应用研究中心
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/2934
Collection空间环境部
Corresponding AuthorBi, YM (reprint author), Natl Satellite Meteorol Ctr, Beijing 100081, Peoples R China.
Recommended Citation
GB/T 7714
Bi, YanMeng,Yang, ZhongDong,Zhang, Peng,et al. An introduction to China FY3 radio occultation mission and its measurement simulation[J]. ADVANCES IN SPACE RESEARCH,2012,49(7):1191-1197.
APA Bi, YanMeng.,Yang, ZhongDong.,Zhang, Peng.,Sun, YueQiang.,Bai, WeiHua.,...&Bi, YM .(2012).An introduction to China FY3 radio occultation mission and its measurement simulation.ADVANCES IN SPACE RESEARCH,49(7),1191-1197.
MLA Bi, YanMeng,et al."An introduction to China FY3 radio occultation mission and its measurement simulation".ADVANCES IN SPACE RESEARCH 49.7(2012):1191-1197.
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