Geo-location error correction using sensor parameters extracted from spaceborne SAR raw data

Author

Song, Sun H. ; Oh, Tae B. ; Kwag, Young K.

Author_Institution

Dept. of Avionics, Korea Aerosp. Univ., Seoul, South Korea

fYear

2009

fDate

26-30 Oct. 2009

Firstpage

1076

Lastpage

1079

Abstract

Spaceborne SAR imagery inherently contains the errors from the ground range nonlinearity and earth rotation. The fusion of SAR image and GIS information may enhance the SAR image quality by correcting the geometric error which is induced from the geo-location and terrain error. In this paper, a geo-location error correction method is proposed. This scheme does not require the aids of GCP and DEM, and instead directly extract the key correction parameters from the SAR raw data. The simulation results using Radarsat-1 SAR image shows good performance in correcting a geo-location error without aid of auxiliary data.

Keywords

error correction; image fusion; radar imaging; spaceborne radar; synthetic aperture radar; GIS information; Radarsat-1 SAR image; SAR image quality; earth rotation; geo-location error correction method; geometric error; ground range nonlinearity; sensor parameters extraction; spaceborne SAR raw data; Data mining; Earth; Error correction; Geographic Information Systems; Geometry; Nonlinear distortion; Parameter extraction; Satellites; Spaceborne radar; Synthetic aperture radar; SAR geometric calibration; SAR parameter extraction; geo-location error;

fLanguage

English

Publisher

ieee

Conference_Titel

Synthetic Aperture Radar, 2009. APSAR 2009. 2nd Asian-Pacific Conference on

Conference_Location

Xian, Shanxi

Print_ISBN

978-1-4244-2731-4

Electronic_ISBN

978-1-4244-2732-1

Type

conf

DOI

10.1109/APSAR.2009.5374207

Filename

5374207