An introduction to China FY3 radio occultation mission and its measurement simulation

	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
刊名	ADVANCES IN SPACE RESEARCH
	2012
卷号	49 期号:7 页码:1191-1197
关键词	Remote sensing Radio occultation GNOS FY3-C
ISSN号	0273-1177
通讯作者	Bi, YM (reprint author), Natl Satellite Meteorol Ctr, Beijing 100081, Peoples R China.
中文摘要	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.
英文摘要	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.
学科主题	空间环境
收录类别	SCI ; EI
资助信息	National Natural Science Foundation of China [500185001]; Special Fund for Metro-scientific Research in the Public Interest [GYHY201006050]
语种	英语
公开日期	2014-12-15
内容类型	期刊论文
源URL	[http://ir.nssc.ac.cn/handle/122/2934]
专题	国家空间科学中心_空间环境部
推荐引用方式 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.,...&Liao, Mi.(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.