| 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 Publication | ADVANCES IN SPACE RESEARCH
 |
| 2012 | |
| Volume | 49Issue:7Pages:1191-1197 |
| ISSN | 0273-1177 |
| Language | 英语 |
| Keyword | Remote Sensing Radio Occultation Gnos Fy3-c |
| Abstract | 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.; 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 By | SCI ; 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 |
| Identifier | http://ir.nssc.ac.cn/handle/122/2934 |
| Collection | 空间环境部 |
| Corresponding Author | Bi, 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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