COMPENSATION OF THE POSITIONING SHIFT CAUESD BY INACCURATE GEODETIC TERRAIN HEIGHTS FOR RADARSAT-2 DATA

被引：0

作者：

An, Wentao ^{[1
]}

Lin, Mingsen ^{[1
]}

Xie, Chunhua ^{[1
]}

机构：

[1] Natl Satellite Ocean Applicat Serv, Beijing 100081, Peoples R China

来源：

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

关键词：

Positioning error; rigorous projection model; synthetic aperture radar; tie point; SAR IMAGERY;

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：

Based on multi-temporal observations of static targets on sea surface, a positioning shift that relates to geodetic terrain heights (GTH) is found. The positioning shift mainly exists in the range direction of a SAR image and has an almost linear relationship with the difference between the real GTH of a target and the GTH of a SAR product. An approach of compensating the positioning shift is proposed based on rigorous projection models of RADARSAT-2. Experimental results illustrate that the positioning error of a static target which is derived using SCW products with different GTHs is 446.63m. After applying the proposed positioning shift compensation approach, the positioning error of a static target becomes 121.09m, which demonstrates the effectiveness of the proposed positioning shift compensation approach.

引用

页码：3282 / 3285

页数：4

共 5 条

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