NSSC OpenIR  > 空间科学部
Inversion for atmosphere duct parameters using real radar sea clutter
Sheng Zheng; Fang Han-Xian; Fang, HX (reprint author), PLA Univ Sci & Technol, Inst Meteorol, Nanjing 211101, Jiangsu, Peoples R China.
Department空间科学部
Source PublicationCHINESE PHYSICS B
2012
Volume21Issue:2Pages:29301
ISSN1674-1056
Language英语
KeywordAtmosphere Duct Radar Clutter Refractivity From Clutter Genetic Algorithm
AbstractThis paper addresses the problem of estimating the lower atmospheric refractivity (M profile) under nonstandard propagation conditions frequently encountered in low altitude maritime radar applications. The vertical structure of the refractive environment is modeled using five parameters and the horizontal structure is modeled using five parameters. The refractivity model is implemented with and without a priori constraint on the duct strength as might be derived from soundings or numerical weather-prediction models. An electromagnetic propagation model maps the refractivity structure into a replica field. Replica fields are compared with the observed clutter using a squared-error objective function. A global search for the 10 environmental parameters is performed using genetic algorithms. The inversion algorithm is implemented on the basis of S-band radar sea-clutter data from Wallops Island, Virginia (SPANDAR). Reference data are from range-dependent refractivity profiles obtained with a helicopter. The inversion is assessed (i) by comparing the propagation predicted from the radar-inferred refractivity profiles with that from the helicopter profiles, (ii) by comparing the refractivity parameters from the helicopter soundings with those estimated. This technique could provide near-real-time estimation of ducting effects.; This paper addresses the problem of estimating the lower atmospheric refractivity (M profile) under nonstandard propagation conditions frequently encountered in low altitude maritime radar applications. The vertical structure of the refractive environment is modeled using five parameters and the horizontal structure is modeled using five parameters. The refractivity model is implemented with and without a priori constraint on the duct strength as might be derived from soundings or numerical weather-prediction models. An electromagnetic propagation model maps the refractivity structure into a replica field. Replica fields are compared with the observed clutter using a squared-error objective function. A global search for the 10 environmental parameters is performed using genetic algorithms. The inversion algorithm is implemented on the basis of S-band radar sea-clutter data from Wallops Island, Virginia (SPANDAR). Reference data are from range-dependent refractivity profiles obtained with a helicopter. The inversion is assessed (i) by comparing the propagation predicted from the radar-inferred refractivity profiles with that from the helicopter profiles, (ii) by comparing the refractivity parameters from the helicopter soundings with those estimated. This technique could provide near-real-time estimation of ducting effects.
Indexed BySCI
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/122/3167
Collection空间科学部
Corresponding AuthorFang, HX (reprint author), PLA Univ Sci & Technol, Inst Meteorol, Nanjing 211101, Jiangsu, Peoples R China.
Recommended Citation
GB/T 7714
Sheng Zheng,Fang Han-Xian,Fang, HX . Inversion for atmosphere duct parameters using real radar sea clutter[J]. CHINESE PHYSICS B,2012,21(2):29301.
APA Sheng Zheng,Fang Han-Xian,&Fang, HX .(2012).Inversion for atmosphere duct parameters using real radar sea clutter.CHINESE PHYSICS B,21(2),29301.
MLA Sheng Zheng,et al."Inversion for atmosphere duct parameters using real radar sea clutter".CHINESE PHYSICS B 21.2(2012):29301.
Files in This Item: Download All
File Name/Size DocType Version Access License
201221229301.pdf(1395KB) 开放获取CC BY-NC-SAView Download
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Sheng Zheng]'s Articles
[Fang Han-Xian]'s Articles
[Fang, HX (reprint author), PLA Univ Sci & Technol, Inst Meteorol, Nanjing 211101, Jiangsu, Peoples R China.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Sheng Zheng]'s Articles
[Fang Han-Xian]'s Articles
[Fang, HX (reprint author), PLA Univ Sci & Technol, Inst Meteorol, Nanjing 211101, Jiangsu, Peoples R China.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Sheng Zheng]'s Articles
[Fang Han-Xian]'s Articles
[Fang, HX (reprint author), PLA Univ Sci & Technol, Inst Meteorol, Nanjing 211101, Jiangsu, Peoples R China.]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: 201221229301.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.