| 应用GPS观测量改正InSAR大气误差的空间插值比较 |
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| 引用本文： | 黄甜,陈国栋.应用GPS观测量改正InSAR大气误差的空间插值比较[J].测绘科学技术学报,2012(1):38-41. |
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| 作者姓名： | 黄甜 陈国栋 |
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| 作者单位： | 苏州建设交通高等职业技术学校;苏州市测绘院有限责任公司 |
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| 摘 要： | 大气水汽的空间变化和时间分布是限制重复轨道干涉测量技术精度的主要因素之一。基于GPS数据,研究比较了改进后的基于地形的GPS扰动模型(GTTM)和基于地形的湍流混合模型(TDTM)。结果表明,改进的GTTM模型和TDTM模型都能有效地降低大气水汽对InSAR测量地面形变精度的影响,且TDTM插值效果更佳。
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| 关 键 词： | 合成孔径雷达干涉测量 大气延迟改正 空间插值 改进的GTTM 基于地形湍流混合模型 |
Comparison of Spatial Interpolation Methods for Correcting Atmospheric Effects in InSAR Measurements Using GPS Observations |
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| HUANG Tian,CHEN Guodong.Comparison of Spatial Interpolation Methods for Correcting Atmospheric Effects in InSAR Measurements Using GPS Observations[J].Journal of Zhengzhou Institute of Surveying and Mapping,2012(1):38-41. |
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| Authors: | HUANG Tian CHEN Guodong |
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| Institution: | 1.Suzhou Institute of Construction & Communications,Suzhou 215104,China; 2.Suzhou Surveying and Mapping Institute Company Limited,Suzhou 215006,China) |
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| Abstract: | The variable spatial and temporal distribution of atmospheric water vapor is one of the main factors which limits the accuracy of repeat-pass InSAR.Based on the GPS data,the performance of improved GPS Topography-dependent Turbulence Model(GTTM) and the model of Topography-dependent and Turbulent Mixing(TDTM) was compared.The experimental results showed that both correction models were able to reduce water vapour effects on InSAR measurements with advantage.It was able to be concluded that the model of TDTM was more effective. |
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| Keywords: | InSAR(Interferometric Synthetic Aperture Radar) atmospheric correction spatial interpolation improved GTTM TDTM |
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