Geolocation Error Estimation and Correction on Long-Term MWRI Data

doi:10.1109/TGRS.2021.3051199

	Geolocation Error Estimation and Correction on Long-Term MWRI Data
	Liu, Jiazheng 1,2; Li, Weifu 1,2; Peng, Jiangtao 3; Shen, Lijun1 ; Han, Hua1,2 ; Zhang, Peng 4; Yang, Lei 4
发表期刊	IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
ISSN	0196-2892
	2021-11-01
卷号	59 期号:11 页码:9448-9461
通讯作者	Yang, Lei(yangl@cma.gov.cn)
摘要	Due to the limitation of the satellite attitude measurement accuracy and the system servo control error of the payload scanning mechanism, an optimal use of Micro-Wave Radiation Imager (MWRI) observations requires high geolocation accuracy. In the operational system, the MWRI geolocation accuracy reaches 1 pixel, and there still exists room for improvement. In this article, we improve upon the coastline inflection point method (CIM) and propose to assign the accurate correspondence by employing a nonrigid point set registration method. First, the method identifies a set of latent variables to recognize outliers and then applies nonparametric geometric constraints to the correspondence as a priori distribution. Second, the maximum a posteriori (MAP) estimation is applied by the expectation-maximization (EM) algorithm to obtain correct inliers. The comparison with other methods demonstrates that the proposed method can provide more accurate estimation of geolocation bias. In addition, the pixel error and changes in spacecraft attitude with the long-term geolocation data in FY-3C MWRI before and after correction were analyzed during the period from April 1 to August 30, 2018. The results have shown that the geolocation errors are reduced from [0.50, 0.60] pixels to [0.20, 0.33] pixels in the along- and cross-track directions after the attitude correction. In addition, the reduction of the standard deviation shows that the geolocation quality of MWRI is improved.
关键词	Geology Sea surface Satellites Earth Instruments Satellite broadcasting Microwave radiometry Geolocation error estimation and correction Micro-Wave Radiation Imager (MWRI) nonrigid point set registration
DOI	10.1109/TGRS.2021.3051199
关键词[WOS]	MICROWAVE ; REGISTRATION ; ACCURACY ; IMAGER
收录类别	SCI
语种	英语
资助项目	National Key Research and Development Program[2018YFB0504900] ; National Key Research and Development Program[2018YFB0504905] ; National Natural Science Foundation of China[11771130] ; National Natural Science Foundation of China[61871177] ; National Natural Science Foundation of China[61673381] ; National Natural Science Foundation of China[61701497] ; National Natural Science Foundation of China[91338109] ; National Natural Science Foundation of China[61172113] ; Scientific Instrument Developing Project of Chinese Academy of Sciences[YZ201671] ; Fundamental Research Funds for the Central Universities of China[2662020LXQD002]
项目资助者	National Key Research and Development Program ; National Natural Science Foundation of China ; Scientific Instrument Developing Project of Chinese Academy of Sciences ; Fundamental Research Funds for the Central Universities of China
WOS研究方向	Geochemistry & Geophysics ; Engineering ; Remote Sensing ; Imaging Science & Photographic Technology
WOS类目	Geochemistry & Geophysics ; Engineering, Electrical & Electronic ; Remote Sensing ; Imaging Science & Photographic Technology
WOS记录号	WOS:000711850900041
出版者	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
七大方向——子方向分类	图像视频处理与分析
引用统计	被引频次：4[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ia.ac.cn/handle/173211/46501
专题	脑图谱与类脑智能实验室_微观重建与智能分析
通讯作者	Yang, Lei
作者单位	1.Chinese Acad Sci, Inst Automat, Natl Lab Pattern Recognit, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Future Technol, Beijing 100049, Peoples R China 3.Hubei Univ, Fac Math & Stat, Hubei Key Lab Appl Math, Wuhan 430062, Peoples R China 4.China Meteorol Adm, Natl Satellite Meteorol Ctr, Beijing 100081, Peoples R China
第一作者单位	模式识别国家重点实验室
推荐引用方式 GB/T 7714	Liu, Jiazheng,Li, Weifu,Peng, Jiangtao,et al. Geolocation Error Estimation and Correction on Long-Term MWRI Data[J]. IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING,2021,59(11):9448-9461.
APA	Liu, Jiazheng.,Li, Weifu.,Peng, Jiangtao.,Shen, Lijun.,Han, Hua.,...&Yang, Lei.(2021).Geolocation Error Estimation and Correction on Long-Term MWRI Data.IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING,59(11),9448-9461.
MLA	Liu, Jiazheng,et al."Geolocation Error Estimation and Correction on Long-Term MWRI Data".IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING 59.11(2021):9448-9461.