SEA ICE DETECTION USING GNSS-R DELAY-DOPPLER MAPS FROM UK TECHDEMOSAT-1

被引：0

作者：

Zhu, Yongchao ^{[1
,2
,3
,4
]}

Yu, Kegen ^{[1
,3
]}

Zou, Jingui ^{[1
,2
,3
]}

Wickert, Jens ^{[4
]}

机构：

[1] Wuhan Univ, Sch Geodesy & Geomat, Wuhan 430079, Hubei, Peoples R China

[2] Natl Adm Surveying Mapping & Geoinformat, Key Lab Precise Engn & Ind Surveying, Wuhan 430079, Hubei, Peoples R China

[3] Wuhan Univ, Collaborat Innovat Ctr Geospatial Technol, Wuhan 430079, Hubei, Peoples R China

[4] German Res Ctr Geosci GFZ, D-14473 Potsdam, Germany

来源：

2017 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM (IGARSS) | 2017年

基金：

中国国家自然科学基金;

关键词：

GNSS-R; Sea Ice; Delay-Doppler Map (DDM); differential DDM; TDS-1; GPS SIGNALS; SURFACE; REFLECTOMETRY; SCATTERING; RETRIEVAL; ALTIMETRY; MODEL; PARIS;

D O I：

暂无

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

In this paper, an approach based on Global Navigation Satellite System-Reflectometry (GNSS-R) is proposed for distinguishing sea ice and water from each other. The Delay-Doppler Map (DDM) of a GNSS signal reflected from sea ice and water show different spreading characteristics. The difference between two adjacent normalized DDMs is a differential DDM observable which provides information about the difference of two DDMs. Through studying whether the pixel number is above or below a predefined threshold, it is possible to determine the type of the reflected surface. The feasibility of the proposed differential DDM based method is validated using the ground-truth sea ice extent map provided by the National Snow and Ice Data Center, USA. The results demonstrate that the probability of detection can be up to 99.88%.

引用

页码：4110 / 4113

页数：4

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