The Dual-aspect Geometric Correction Method Based on DEM for High-resolution SAR Images

doi:10.6046/gtzyyg.2010.02.03

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Abstract

This paper presents a newly developed method for SAR image geometric correction which lies in the dual-aspect geometric correction based on DEM to overcome the inherent shortages of Synthetic Aperture Radar (SAR) image such as foreshortening, shadow and layover， and correct the distorted or lost backscatter coefficient values in mountain areas. The geometric distortion of SAR images strongly limits the application of such images, especially in forestry inventory. The Terra SAR-X SAR images were used in this study. The results show that this method can effectively eliminate the effect of geometric distortions and compensate the lost or distorted backscatter coefficients, and is especially useful in eliminating layover and shadow distortions in SAR images. This method thus solves the geometric correction problem that cannot be solved with single SAR image.

Keywords Satellite remote sensing Land use survey Accuracy

Issue Date: 29 June 2010

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Cite this article:

WAN Zi, XU Mao-Song, XIA Zhong-Sheng, ZHANG Feng-Li, GONG Hua-Ze. The Dual-aspect Geometric Correction Method Based on DEM for High-resolution SAR Images[J]. REMOTE SENSING FOR LAND & RESOURCES,2010, 22(2): 12-16.

URL:

https://www.gtzyyg.com/EN/10.6046/gtzyyg.2010.02.03 OR https://www.gtzyyg.com/EN/Y2010/V22/I2/12

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