气候变化领域集成服务门户(CCPortal): Time Series X- and Ku-Band Ground-Based Synthetic Aperture Radar Observation of Snow-Covered Soil and Its Electromagnetic Modeling

CCPortal

DOI	10.1109/TGRS.2021.3071373
	Time Series X- and Ku-Band Ground-Based Synthetic Aperture Radar Observation of Snow-Covered Soil and Its Electromagnetic Modeling
	Xiong, Chuan; Shi, Jiancheng; Pan, Jinmei; Xu, Haokui; Che, Tao; Zhao, Tianjie; Ren, Yan; Geng, Deyuan; Chen, Tao; Jiang, Kaiwen; Feng, Peng
通讯作者	Xiong, C (通讯作者)，Southwest Jiaotong Univ, Fac Geosci & Environm Engn, Chengdu 610031, Peoples R China.
发表日期	2022
ISSN	0196-2892
EISSN	1558-0644
卷号	60
英文摘要	The snow water equivalent (SWE, a measurement of the amount of water contained in snow packs) is an important variable in earth systems. Microwave remote sensing provides a possible solution for estimating the SWE globally. To support radar SWE retrieval, the snow backscattering theory needs to be studied; the forward simulation model needs to be validated against natural snow observations. In this study, a one-winter experiment to observe the time series backscattering coefficient of snow-covered bare soil is reported. This is the first long time series snow-covered soil backscattering experiment that was measured by an imaging radar. The backscattering coefficient was observed at three frequencies covering the X-band and dual-Ku bands, which are of great interest to the snow remote sensing community and are used for SWE estimation in mountains. The calibration of the synthetic aperture radar (SAR) system was conducted manually and carefully to ensure high-quality radar observation data. The observations from our experiment show that in general, the time series backscattering signature of snow-covered terrain is mainly driven by soil freezing, snow grain size growth, and snow accumulation processes. The time series observations for dry snow are modeled by backscattering models with model inputs directly calculated from field measurements. Our simulation results indicate that the time series radar backscattering at three frequencies and four polarizations can be simulated with high accuracy, including the cross-polarization channels. This study provides some key understanding of the time series signature of radar backscattering from snow and provides some key implications for SWE retrieval from radar observations.
关键词	PASSIVE MICROWAVE RESPONSE SIR-C/X-SAR BRIGHTNESS TEMPERATURE WATER EQUIVALENT GRAIN-SIZE SCATTERING DEPTH EMISSION COREH2O BACKSCATTERING
英文关键词	Snow; Backscatter; Antenna measurements; Frequency measurement; Radar; Remote sensing; Time series analysis; Electromagnetics for remote sensing; ground experiment; radar remote sensing; snow
语种	英语
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:000732803700001
来源期刊	IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254878
作者单位	[Xiong, Chuan; Ren, Yan] Southwest Jiaotong Univ, Fac Geosci & Environm Engn, Chengdu 610031, Peoples R China; [Shi, Jiancheng] Chinese Acad Sci, Natl Space Sci Ctr, Beijing 100190, Peoples R China; [Pan, Jinmei; Xu, Haokui; Zhao, Tianjie; Geng, Deyuan; Chen, Tao] Chinese Acad Sci, Aerosp Informat Res Inst, State Key Lab Remote Sensing Sci, Beijing 100094, Peoples R China; [Xu, Haokui] Univ Michigan, Dept Elect Engn & Comp Sci, Ann Arbor, MI 48105 USA; [Chen, Tao] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Heihe Remote Sensing Expt Res Stn, Key Lab Remote Sensing Gansu Prov, Lanzhou 730000, Peoples R China; [Chen, Tao] Xinjiang Univ, Coll Resource & Environm Sci, Minist Educ, Key Lab Oasis Ecol, Urumqi 830046, Peoples R China; [Jiang, Kaiwen; Feng, Peng] Allay Meteorol Bur, Allay 836500, Peoples R China
推荐引用方式 GB/T 7714	Xiong, Chuan,Shi, Jiancheng,Pan, Jinmei,et al. Time Series X- and Ku-Band Ground-Based Synthetic Aperture Radar Observation of Snow-Covered Soil and Its Electromagnetic Modeling[J]. 中国科学院西北生态环境资源研究院,2022,60.
APA	Xiong, Chuan.,Shi, Jiancheng.,Pan, Jinmei.,Xu, Haokui.,Che, Tao.,...&Feng, Peng.(2022).Time Series X- and Ku-Band Ground-Based Synthetic Aperture Radar Observation of Snow-Covered Soil and Its Electromagnetic Modeling.IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING,60.
MLA	Xiong, Chuan,et al."Time Series X- and Ku-Band Ground-Based Synthetic Aperture Radar Observation of Snow-Covered Soil and Its Electromagnetic Modeling".IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING 60(2022).