基线误差、相位误差和大气延迟误差对InSAR数据处理的影响分析
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摘要
基于星载InSAR的基本原理,首先推导了基线误差、相位误差和大气延迟误差对高程测量的影响公式,得出了他们均与有效基线长度成反比的影响规律。接着讨论了大气延迟误差对二轨法和三轨法形变测量的影响规律:大气延迟误差对二轨法形变测量的影响随入射角变化不明显,对三轨法形变测量的影响随基线比变化不明显。当入射角取23°,基线比取1/2,欲使大气延迟误差对形变测量的影响<1 cm,二轨法要求其测量误差<6.5 mm,三轨法要求其测量误差<7.5 mm。
Based on the basic principles of InSAR,we can draw the following conclusions:an inverse proportion relation exists between errors of baseline,phase and atmosphere delay and length of effective baseline in terms of height measurement;atmosphere delay error impact on two-pass deformation measurement changes little with incidence angle difference,and its impact on three-pass deformation measurement changes little with baseline ratio.When incidence angle is 23°and baseline ration 1/2,if we let its impact on deformation error less than 1 cm,atmosphere delay error must be less than 6.5 mm for two-pass DInSAR and 7.5 mm for three-pass DInSAR.
Based on the basic principles of InSAR,we can draw the following conclusions:an inverse proportion relation exists between errors of baseline,phase and atmosphere delay and length of effective baseline in terms of height measurement;atmosphere delay error impact on two-pass deformation measurement changes little with incidence angle difference,and its impact on three-pass deformation measurement changes little with baseline ratio.When incidence angle is 23°and baseline ration 1/2,if we let its impact on deformation error less than 1 cm,atmosphere delay error must be less than 6.5 mm for two-pass DInSAR and 7.5 mm for three-pass DInSAR.
引文
[1]Wang Chao,Zhang Hong,Liu Zhi.Interferometric Surveyingby SAR[M].Beijing:Science Press,2002.[王超,张红,刘智.星载合成孔径雷达干涉测量[M].北京:科学出版社,2002.]
[2]Zebker H A,Werner C L,Rosen P A,et al.Accuracy of Top-ographic Maps Derived from ERS-1 Interferometric Radar[J].IEEE Transactions on Geoscience and Remote Sensing,1994,32(4):823-836.
[3]Liu Guoxiang,Ding Xiaoli,Li Zhilin,et al.Experimental In-vestigation on DEM Generation through InSAR[J].ActaGeodaetica et Cartographica Sinica,2001,30(4):336-342.[刘国祥,丁晓利,李志林,等.使用InSAR建立DEM的试验研究[J].测绘学报,2001,30(4):336-342.]
[4]Shan Xinjian,Ma Jin.Extracting Co-seismic Deformation withDifferential Interferometric SAR[J].Acta Seismologica Sini-ca,2002,24(4):413-420.[单新建,马瑾.利用差分干涉雷达测量技术(D-InSAR)提取同震形变场[J].地震学报,2002,24(4):413-420.]
[5]Jing Yan,Wang Jianjun,Zhang Jingfa,et al.The Co-seismicDeformation Research Using D-InSAR Observation[J].Sci-ence of Surveying and Mapping,2004,29(2):64-68.[荆燕,王建军,张景发,等.D-InSAR技术在地震同震形变研究中的应用[J].测绘科学,2004,29(2):64-68.]
[6]Fielding E J,Blom R G,Goldstein R M.Rapid Subsidence o-ver Oil Fields Measured by SAR Interferometry[J].Geophys-ical Research Letters,1998,25(17):3215-3218.
[7]Zheng Fang,Ma Debao,Pei Huaining.Discussion about Re-quirement of Baseline Precision in InSAR[J].Modern Radar,2005,27(9):18-21.[郑芳,马德宝,裴怀宁.InSAR中基线精度要求的探讨[J].现代雷达,2005,27(9):18-21.]
[8]Li Zhenghong,Liu Jingnan,Xu Caijun.Error Analysis in In-SAR Data Processing[J].Editorial Board of Geomatics andInformation Science of Wuhan University,2004,29(1):72-76.[李振洪,刘经南,许才军.InSAR数据处理中的误差分析[J].武汉大学学报(信息科学版),2004,29(1):72-76.]
[9]Hanssen R F.Radar Interferometry Data Interpretation andError Analysis[M].Dordrecht:Kluwer Academic Publishers,2001.
[10]You Xinzhao,Wang Qi,Qiao Xuejun,et al,Quantitative Esti-mation of Effect of Atmospheric Refraction on InSAR[J].Journal of Geodesy and Geodynami,2003,23(2):81-87.[游新兆,王琪,乔学军,等.大气折射对InSAR影响的定量分析[J].大地测量与地球动力学,2003,23(2):81-87.]
[11]Song Xiaogang,Wang Shang,Xi Guangyong.Error Analysisand Reliability Theory in InSAR[J].Geotechnical Investiga-tion&Surveying,2007,(2):57-60.[宋小刚,王尚,席广永.InSAR中的误差分析和可靠性理论[J].工程勘察,2007,(2):57-60.]
[12]Zebker H A,Rosen P A,Hensley S.Atmospheric Effects inInterferometric Synthetic Aperture Radar Surface Deforma-tion and Topographic Maps[J].Journal of Geophysical Re-search,1997,102(B4):7547-7563.
[13]Gabriel A K,Goldstein R M,Zebker H A.Mapping Small El-evation Changes over Large Areas:Differential Radar Inter-ferometry[J].Journal of Geophysical Research,1989,94(B7):9183-9191.
[14]Goldstein R.Atmospheric Limitations to Repeat-track RadarInterferometry[J].Geophyscal Research Letters,1995,22(18):2517-2520.
[2]Zebker H A,Werner C L,Rosen P A,et al.Accuracy of Top-ographic Maps Derived from ERS-1 Interferometric Radar[J].IEEE Transactions on Geoscience and Remote Sensing,1994,32(4):823-836.
[3]Liu Guoxiang,Ding Xiaoli,Li Zhilin,et al.Experimental In-vestigation on DEM Generation through InSAR[J].ActaGeodaetica et Cartographica Sinica,2001,30(4):336-342.[刘国祥,丁晓利,李志林,等.使用InSAR建立DEM的试验研究[J].测绘学报,2001,30(4):336-342.]
[4]Shan Xinjian,Ma Jin.Extracting Co-seismic Deformation withDifferential Interferometric SAR[J].Acta Seismologica Sini-ca,2002,24(4):413-420.[单新建,马瑾.利用差分干涉雷达测量技术(D-InSAR)提取同震形变场[J].地震学报,2002,24(4):413-420.]
[5]Jing Yan,Wang Jianjun,Zhang Jingfa,et al.The Co-seismicDeformation Research Using D-InSAR Observation[J].Sci-ence of Surveying and Mapping,2004,29(2):64-68.[荆燕,王建军,张景发,等.D-InSAR技术在地震同震形变研究中的应用[J].测绘科学,2004,29(2):64-68.]
[6]Fielding E J,Blom R G,Goldstein R M.Rapid Subsidence o-ver Oil Fields Measured by SAR Interferometry[J].Geophys-ical Research Letters,1998,25(17):3215-3218.
[7]Zheng Fang,Ma Debao,Pei Huaining.Discussion about Re-quirement of Baseline Precision in InSAR[J].Modern Radar,2005,27(9):18-21.[郑芳,马德宝,裴怀宁.InSAR中基线精度要求的探讨[J].现代雷达,2005,27(9):18-21.]
[8]Li Zhenghong,Liu Jingnan,Xu Caijun.Error Analysis in In-SAR Data Processing[J].Editorial Board of Geomatics andInformation Science of Wuhan University,2004,29(1):72-76.[李振洪,刘经南,许才军.InSAR数据处理中的误差分析[J].武汉大学学报(信息科学版),2004,29(1):72-76.]
[9]Hanssen R F.Radar Interferometry Data Interpretation andError Analysis[M].Dordrecht:Kluwer Academic Publishers,2001.
[10]You Xinzhao,Wang Qi,Qiao Xuejun,et al,Quantitative Esti-mation of Effect of Atmospheric Refraction on InSAR[J].Journal of Geodesy and Geodynami,2003,23(2):81-87.[游新兆,王琪,乔学军,等.大气折射对InSAR影响的定量分析[J].大地测量与地球动力学,2003,23(2):81-87.]
[11]Song Xiaogang,Wang Shang,Xi Guangyong.Error Analysisand Reliability Theory in InSAR[J].Geotechnical Investiga-tion&Surveying,2007,(2):57-60.[宋小刚,王尚,席广永.InSAR中的误差分析和可靠性理论[J].工程勘察,2007,(2):57-60.]
[12]Zebker H A,Rosen P A,Hensley S.Atmospheric Effects inInterferometric Synthetic Aperture Radar Surface Deforma-tion and Topographic Maps[J].Journal of Geophysical Re-search,1997,102(B4):7547-7563.
[13]Gabriel A K,Goldstein R M,Zebker H A.Mapping Small El-evation Changes over Large Areas:Differential Radar Inter-ferometry[J].Journal of Geophysical Research,1989,94(B7):9183-9191.
[14]Goldstein R.Atmospheric Limitations to Repeat-track RadarInterferometry[J].Geophyscal Research Letters,1995,22(18):2517-2520.
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