大气折射对InSAR影响的定量分析.pdf

232 Vol.23, No. 2 2 0 0 3 5 JOURNAL OF GEODESY AND GEODYNAMICS May, 2003 : 1671 5942( 2003) 02 0081 07 InSAR 1) 2) 2) 2) 游新兆 王 琪 乔学军 杜瑞林 1) , 100036 2) , 430071 SAR SAR , , () , , : P225. 1 : A QUANTITATIVE ESTIMATION OF EFFECT OF ATMOSPHERIC REFRACTION ON INSAR 1) 2) 2) 2) You Xinzhao , Wang Qi , Qiao Xuejun and Du Ruilin 1) Center f or A nalysis and Pred ict ion , CSB , Beij i ng 100036 2) I nsti tute of Seismology , CSB , Wuhan 430071 Abstract Spaceborne SAR repeat pass interferometry is a technique based on the exploitation of the inter ference pattern of two SAR images acquired in similar geometric conditions, at two different times. The inter ferogram contains geometric, atmospheric, topographic and land deformation information. This paper focuses on atmospheric effects on SAR interferometry. It shows theoretically that the relationship among ionosphere TEC and troposphere parameters such as temperature, relative humidity and pressure with respect to relative interfer ometric phase changes, and visualize the magnitude of these effects. Key words: InSAR, atmosphere refraction, crustal deformation SAR , 1 引言 [ 1,2] , InSAR , , , InSAR [ 3~ 6] SAR : 2003 02 27 : ( 602015) ; 973 : , , 1965 , ,