CAJ | 학술논문

本文通过采用小基线 InSAR 技术，对离散的 DInSAR 干涉对进行时序分析，获取黑龙江省兰西县城区2012年的线性地面沉降速率，通过去除大气延迟相位计算非线性形变量，进而获取时间上连续的沉降量。通过分析兰西县城区的沉降幅度、分布及其随时间变化的情况，发现研究区最大沉降速率达到2．4cm/年，地面沉降累积量随时间变化基本上呈线性的沉降。最后利用相邻轨道 Radarsat-2数据独立计算的结果进行对比验证，相对误差在4mm/年以内，均方差为0．13cm/年。两者计算结果的一致性说明了本文研究区 InSAR 计算结果的准确性。
본문통과채용소기선 InSAR 기술，대리산적 DInSAR 간섭대진행시서분석，획취흑룡강성란서현성구2012년적선성지면침강속솔，통과거제대기연지상위계산비선성형변량，진이획취시간상련속적침강량。통과분석란서현성구적침강폭도、분포급기수시간변화적정황，발현연구구최대침강속솔체도2．4cm/년，지면침강루적량수시간변화기본상정선성적침강。최후이용상린궤도 Radarsat-2수거독립계산적결과진행대비험증，상대오차재4mm/년이내，균방차위0．13cm/년。량자계산결과적일치성설명료본문연구구 InSAR 계산결과적준학성。
In this paper,the linear surface deformation in 2012 was obtained in Lanxi county of Heilongjiang Province by using small baseline InSAR technology to analysis discrete DInSAR observations.Then the nonlinear deformation was retrieved by removing atmospheric delay phase,and temporally continuous subsidence field was obtained.By analyzing Lanxi county ground subsidence distribution and surface deformation change over time,it was found that the maximum subsidence rate in the study area is 2.43cm/year and the cumulative amount of land subsidence is essentially linear with time.Finally,the calculated result of the adjacent track Radarsat2 data was compared to verify accuracy,the relative error is less than 4mm/year and the mean square error is 0.132cm/year.The consistency between the results illustrated the accuracy of results in the study area.