The simulation of geometric distortion in a synthetic aperture radar image of Alpine terrain

Author

Corner, W.R. ; Rees, W.G.

Author_Institution

Dept. of Geogr., Univ. of Manchester Inst. of Sci. & Technol., UK

Volume

2

fYear

34881

fDate

10-14 Jul1995

Firstpage

1515

Abstract

Due to the viewing geometry of a synthetic aperture radar (SAR) any imaged point not on the surface datum will be distorted, and will appear to lean towards the sensor´s ground track. The higher the point, the greater the distortion. The position of the point within the image swath also has an effect on the resultant distortion. This distortion was quantified, using a curved Earth model. The results showed that a point, in mid-swath, 500 metres above sea level, imaged by the ERS-1 SAR, would be displaced by 1176 metres, 39 pixels, in the direction of the satellite ground track

Keywords

geophysical techniques; radar imaging; remote sensing by radar; spaceborne radar; synthetic aperture radar; topography (Earth); Alpine terrain; ERS-1; SAR imagery; curved Earth model; geometric distortion; geophysical measurement technique; land surface; mountainous terrain; radar imaging; radar remote sensing; satellite ground track; spaceborne radar; synthetic aperture radar; terrain mapping; topography; viewing geometry; Earth; Geography; Geometry; Pixel; Radar tracking; Remote sensing; Satellites; Sea level; Sea surface; Solid modeling; Spaceborne radar; Surface topography; Synthetic aperture radar; Tin;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium, 1995. IGARSS '95. 'Quantitative Remote Sensing for Science and Applications', International

Conference_Location

Firenze

Print_ISBN

0-7803-2567-2

Type

conf

DOI

10.1109/IGARSS.1995.521796

Filename

521796