Title :
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
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;
Conference_Titel :
Image and Data Fusion (ISIDF), 2011 International Symposium on
Conference_Location :
Tengchong, Yunnan
Print_ISBN :
978-1-4577-0967-8
DOI :
10.1109/ISIDF.2011.6024220
