NSSC OpenIR  > 空间环境部
GNSS-R/IR监测地表冻融状态对延迟多普勒波形和多路径数据影响分析
Alternative TitleTheoretical analysis of soil freeze/thaw process on DDM waveform and multipath in order for GNSS-R/IR applications
吴学睿; 夏俊明; 白伟华; 张兴刚
Department空间环境部
Source Publication测绘学报
2019
Volume48Issue:8Pages:1059-1066
DOI10.11947/j.AGCS.2019.20180038
ISSN1001-1595
Language中文
KeywordGNSS-R/IR 冻融地表 延迟多普勒图 多路径 双站全极化
Abstract将GNSS-R/IR技术的应用领域拓展到地表冻融状态的监测中,本文利用冻融土混合介质介电常数模型计算土壤介电常数,采用双站全极化相干反射率模型和随机粗糙面散射模型,分别计算了经冻融土反射的GPS相干反射量的镜像反射率,以及GPS非相干反射分量的漫散射特性。模拟分析了冻融转换时,GPS多路径信息(GNSS-IR)以及包含漫散射信号的延迟多普勒图(GNSS-R)的变化特征。理论研究表明冻融转换过程中,地表介电常数的变化导致GPS多路径信息和延迟多普勒图的明显变化。本文从散射机理上揭示了利用GNSS-R和GNSS-IR遥感进行地表冻融特性监测的理论依据。
Other AbstractIn order to extend the applications GNSS-R/IR(GNSS-reflectometry/interferometric reflectometry) remote sensing technique to soil freeze/thaw process detection, soil(frozen/thawn) mixing permittivity models are employed to calculate the soil permittivity. Bistatic full-polarization coherent scattering model and random roughness surface scattering model are used to calculate the coherent and non-coherent scattering, which result in the variations of GPS multipath observables and DDM(delay Doppler map) waveforms, respectively. When the soil freeze/thaw process occurs, theoretical simulations indicate that soil freeze/thaw process induce the abrupt permittivity changes and affect the obvious variations of GNSS-R/IR signals. In this way, theoretical fundamentals for soil freeze/thaw process detections are presented. © 2019, Surveying and Mapping Press. All right reserved.
Indexed ByEI
Citation statistics
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/7237
Collection空间环境部
Recommended Citation
GB/T 7714
吴学睿,夏俊明,白伟华,等. GNSS-R/IR监测地表冻融状态对延迟多普勒波形和多路径数据影响分析[J]. 测绘学报,2019,48(8):1059-1066.
APA 吴学睿,夏俊明,白伟华,&张兴刚.(2019).GNSS-R/IR监测地表冻融状态对延迟多普勒波形和多路径数据影响分析.测绘学报,48(8),1059-1066.
MLA 吴学睿,et al."GNSS-R/IR监测地表冻融状态对延迟多普勒波形和多路径数据影响分析".测绘学报 48.8(2019):1059-1066.
Files in This Item:
File Name/Size DocType Version Access License
20194881059-1066.pdf(2079KB)期刊论文出版稿开放获取CC BY-NC-SAApplication Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[吴学睿]'s Articles
[夏俊明]'s Articles
[白伟华]'s Articles
Baidu academic
Similar articles in Baidu academic
[吴学睿]'s Articles
[夏俊明]'s Articles
[白伟华]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[吴学睿]'s Articles
[夏俊明]'s Articles
[白伟华]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

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