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DInSAR技术对不同方位形变的敏感性研究
第 35 卷 第 2 期 测 绘 学 报 Vol . 35 , No . 2
2006 年 5 月 ACTA GEODA ETICA et CAR TO GRAPHICA SIN ICA May ,2006
文章编号 : 100 11595 (2006) 020 13305 中图分类号 :P237 文献标识码 :A
D InSA R 技术对不同方位形变的敏感性研究
查显杰 ,傅容珊 ,戴志阳
( 中国科学技术大学 地球与空间科学学院 ,安徽 合肥 230026)
The Sensitivity of D InSAR to Surface Def ormation in Diff erent Direction
ZHA Xianjie , FU Rongshan , DA I Zhiyang
( S chool of Eart h an d Sp ace S ciences , University of S cience an d Technology of Chi na , Hef ei 230026 , Chi na)
Abstract :D In SAR technique only measures one dimensional component of t he surface deformation in t he satellite ’s
line of sight , but t he real deformation may be not in t he satellite ’s line of sight . Can t he D In SAR technique be used
to measure t he deformation ? For t his , t his p ap er has modeled t he interferograms of deformation in vertical , range
and azimut h direction , using digital elevation model of terrain as given obj ect and only considering t he affection of
distance to p hase , so as to study t he sensitivity of D In SAR to deformation in different orientation . The numerical
simulation result s show under t he condition of t he same model p arameters and t he same size of deformation , t he
π
number of t he whole interferogram ring whose p hase changes from 0 to 2 is distinct , modeled by t hree different de
formations. Moreover , t he sensitivity of D In SAR to deformation in different direction is diverse and t he sensitivity
value from large to small is vertical , range and
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