Full-Text Search:
Home|About CNKI|User Service|中文
Add to Favorite Get Latest Update

New solution to location of spaceborne synthetic aperture radar image

ZHANG Bo ZHANG Hong WANG Chao WU Fan (Key Laboratory of China Remote Sensing Ground Station, CAS, Beijing 100086, China)  
Directly locating pixel in SAR image is based on RangeDoppler model without tie points. In general, transforms among different coordinates used to solve RangeDoppler equations, are complex and depend on many projection parameters. In this paper, a new method is developed to solve RD equations. Firstly, the RD equations are expanded by Taylor expansion while the distance between SAR satellite and target is viewed as a variable parameter. Then the absolute location is retrieved iteratively by leastsquare adjustment for linear RD equations. Test is conducted using ERS2 SAR imagery of Suzhou area, China, comparing with topographic map with a scale of 1∶100,000. The results indicated an accuracy of 200 meters is attainable independent of any reference or GCP point.
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©CNKI All Rights Reserved