Title :
Precision rectification of airborne SAR image
Author :
Mingsheng, Liao ; Zuxun, Zhang ; Frederiksen, Poul ; Dall, Jergen
Author_Institution :
Wuhan Tech. Univ. of Surveying & Mapping, China
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;
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
DOI :
10.1109/IGARSS.1997.615839
