Space-Borne SAR Image Geo-Location in Mountain Area with Sparse GCP

Author

Chunquan Cheng ; Shujian Zheng ; Xiaojun Liu ; Ju Han

Author_Institution

Key Lab. of Mapping from Space of State Bur. of Surveying & Mapping, CASM, Beijing, China

fYear

2011

fDate

9-11 Aug. 2011

Firstpage

1

Lastpage

4

Abstract

In this paper, the RD model for the foundation, through image and ephemeris data combined adjustment that the space-borne SAR image rigorous geo-location model with sparse GCP was built. Taking three conjoint images of one TerraSAR strip in eastern Himalayas, which elevation between 2800 m and 5500 m, as test data, positioning test carried separately on different GCPs and different orbit refined model. The result shown that horizontal positioning precision was 20 m when one GCP, which was far higher than the 700 m under the condition of no GCP, and few images in one continuous strip with a set of linear polynomial orbit refined model could satisfied the space-borne TerraSAR image positioning with sparse GCP.

Keywords

radar imaging; spaceborne radar; synthetic aperture radar; ephemeris data; image data; linear polynomial orbit refined model; mountain area; size 2800 m; size 5500 m; space-borne SAR image geo-location; sparse GCP; Accuracy; Mathematical model; Orbits; Polynomials; Radar imaging; Spaceborne radar;

fLanguage

English

Publisher

ieee

Conference_Titel

Image and Data Fusion (ISIDF), 2011 International Symposium on

Conference_Location

Tengchong, Yunnan

Print_ISBN

978-1-4577-0967-8

Type

conf

DOI

10.1109/ISIDF.2011.6024220

Filename

6024220