重轨星载INSAR中大气水汽影响的初步分析Analyzing atmospheric water vapour effects on the repeat-pass spaceborne SAR interferometry
赵景民,甘卫军,谌华
摘要(Abstract)：
大气水汽是影响重复轨道合成孔径雷达干涉测量形变监测的一个主要误差源。本文选取官厅水库附近地区为研究区域,利用重复轨道ENVISAT卫星ASAR数据的差分干涉处理结果和近地表卫星水汽数据以及卫星过境当日气温资料,对重轨D-INSAR大气水汽的影响进行了初步分析。研究结果表明:大气水汽相对湿度变化21.6%时,差分干涉处理中大气水汽产生的"伪形变"——大气水汽影响的绝对量值,在水平方向为12.2 cm,在高程方向为5.29 cm。
关键词(KeyWords)： 重复轨道;合成孔径雷达干涉测量(INSAR);伪形变;相对湿度
基金项目(Foundation): 地震行业科研专项(20070813)资助
作者(Author): 赵景民,甘卫军,谌华
参考文献(References)：
- [1]Massonnet D,Feigl K,Roseei Mand Adragna F.Radar in-terferometric mapping of deformation in the year after theLanders earthquake[J].Nature,1995,369:227-230.
- [2]Davis,J L,TAHerring,I I Shapiro,AE E Rogers,andG Elgered.Geodesy by radio interferometry:Effects of at-mospheric modeling errors on estimates of baseline length[J].Radio Science,1985,20:1593-1607.
- [3]Bevis M,S Businger,T A Herring,C Rocken,R A An-thes,and R HWare.GPS meteorology:remote sensing ofatmospheric water vapor using the Global Positioning Sys-tem[J].Journal of Geophysical Research,97(D14),15,787-15,801,1992.
- [4]Niell,AE.Preliminary evaluation of atmospheric mappingfunctions based on numerical weather models[J].Physicsand Chemistry of the Earth,Part A:Solid Earth and Geod-esy,2001,26(6-8):475-480.
- [5]Saastamoinen J.Atmospheric correction for the troposphereand stratosphere in radio ranging of satellites,in Geophys-ics monograph 15,3rd Int.Symp[J].Use of ArtificialSatellites for Geodesy,Washington DC,1972-08:247-251.
- [6]Baby H,P Gole,and J A Lavergnat.Model for tropo-spheric excess path length of radio waves from surface me-teorological measurements[J].Radio Science,1988,22:1023-1038.
- [7]Askne J,and H Nordius.Estimation of tropospheric delayfor microwaves from surface weather data[J].Radio Sci-ence,1987,22:379-386.
- [8]Elgered G.Tropospheric radio path delay from ground-based microwave radiometry[J].Atmospheric RemoteSensing by Microwave Radiometry,1993:215-258.
- [9]Zebker H A,Rosen P A,Hensley S.AtmosphericEffects in Interferometric Synthetic Aperture Radar[J].Surface Deformation and Topographic Maps,J Geophys.Res,1997,102:7 547-7 563.
- [10]Bob Hardy,ITS-90 FORMULATIONS FOR VAPOR PRES-SURE,FROSTPOINT TEMPERATURE,DEWPOINT TEM-PERATURE,AND ENHANCEMENT FACTORS IN THERANGE-100 TO+100 C[Z].Thunder Scientific Corpora-tion,Albuquerque,NM,USA.
- [11]方仲景,程绍平,冉勇康,等.延怀盆岭构造及其晚第四纪断裂运动的某些特征[J].地球物理学进展,1993,8(4):265-276.
- [12]张先康,王椿镛,刘国栋,等.延庆—怀来地区地壳细结构—利用深地震反射剖面[J].地球物理学报,1996,39(3):356-363.
- [13]Frouin R,Deschamps P Y,Lecomet P.Determinationtheory and airborne verification[J].J.Appl.Mete,1990,29(6):448-460.
- [14]张弓,许健民,黄意玢.用FY-1C两个近红外太阳反射光通道的观测数据反演水汽总含量[J].应用气象学报,2003,14(4):385-394.