Volume 37 Issue 11
Nov.  2012
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SHI Xuguo, ZHANG Lu, Timo Balz, LIAO Mingsheng. A Modified 3D Grid Interpolation Method for Satellite SAR Geocoding[J]. Geomatics and Information Science of Wuhan University, 2012, 37(11): 1329-1332.
Citation: SHI Xuguo, ZHANG Lu, Timo Balz, LIAO Mingsheng. A Modified 3D Grid Interpolation Method for Satellite SAR Geocoding[J]. Geomatics and Information Science of Wuhan University, 2012, 37(11): 1329-1332.
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A Modified 3D Grid Interpolation Method for Satellite SAR Geocoding

  • 1 State Key Laboratory of Information Engineering in Surveying,Mapping and Remote Sensing, Wuhan University,129 Luoyu Road,Wuhan 430079,China

Funds: 国家自然科学基金资助项目(41174120,41021061,41271547);;国家863计划资助项目(2011AA120404);;武汉大学测绘遥感信息工程国家重点实验室专项科研经费资助项目;;三峡库区三期地质灾害防治重大科研资助项目(SXKY3-6-4);;中央高校基本科研业务费专项资金资助项目(2012619020212)
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  • Received Date: September 14, 2012
  • Published Date: November 04, 2012
    Graphical Abstract
    • Abstract
  • To eliminate the pervasive geometric distortion and improve the application value of SAR images,orthorectification taking topography into account must be performed to generate orthoimages in a certain map projection.This process is known as SAR geocoding.To solve the problems of traditional methods for SAR geocoding in efficiency and accuracy,here a modified 3D grid interpolation method is proposed.Experimental results with ENVISAT ASAR data show that significant improvements in geometric location accuracy can be achieved by using the modified method when compared with the original one,while the increases in computation time cost are limited.Therefore,the modified 3D grid interpolation method can be used to perform fast SAR image geocoding with high accuracy.
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