Precision rectification of airborne SAR image

Author

Mingsheng, Liao ; Zuxun, Zhang ; Frederiksen, Poul ; Dall, Jergen

Author_Institution

Wuhan Tech. Univ. of Surveying & Mapping, China

Volume

1

fYear

1997

fDate

3-8 Aug 1997

Firstpage

204

Abstract

A simple and direct procedure for the rectification of a certain class of airborne SAR data is presented. The relief displacements of SAR data are effectively removed by means of a digital elevation model and the image is transformed to the ground coordinate system. SAR data from the Danish EMISAR is used. The EMISAR produces data with a geometrical resolution of 2.0 meters. The corrected image is tested against photogrammetric control measurements and an accuracy better than 0.5 pixel corresponding to 0.75 meters is obtained. The results indicate promising possibilities for the application of SAR data in the difficult process of map revision and updating

Keywords

airborne radar; cartography; geophysical signal processing; geophysical techniques; image registration; radar imaging; remote sensing by radar; synthetic aperture radar; Danish EMISAR; airborne SAR image; cartography; digital elevation model; geophysical measurement technique; ground coordinate system; image registration; land surface; map revision; precision rectification; radar imaging; radar remote sensing; relief displacement; remote sensing; synthetic aperture radar; terrain mapping; updating; Digital elevation models; Earth; Equations; Geometry; Layout; Optical sensors; Pixel; Remote sensing; Synthetic aperture radar; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing, 1997. IGARSS '97. Remote Sensing - A Scientific Vision for Sustainable Development., 1997 IEEE International

Print_ISBN

0-7803-3836-7

Type

conf

DOI

10.1109/IGARSS.1997.615839

Filename

615839