%0 Journal Article %A HUANG Qi-huan %A HE Xiu-feng %T DEM generation with spaceborne SAR and its accuracy analysis %D 2008 %R 10.3778/j.issn.1002-8331.2008.31.064 %J Computer Engineering and Applications %P 221-223 %V 44 %N 31 %X InSAR has been demonstrated to be a promising technology to map accurate DEM.However,if an InSAR system is configured with repeat-pass space borne SAR,vegetation,water vapor,baseline decorrelation and temporal decorrelation limit the accuracy of its applications.A pair of ERS-1/2 tandem SAR images is used to generate the interferogram and DEM in Zhenjiang area,followed by the accuracy analysis with respect to baseline and phase noise.The relation between phase noise and coherence,multilook is given.The results show that DEM error is less than 3.5 meters in small area if only the baseline and phase noise are considered. %U http://cea.ceaj.org/EN/10.3778/j.issn.1002-8331.2008.31.064