| 多参考点的PS-InSAR变形监测数据处理 |
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| 引用本文： | 朱武,张勤,丁晓利.多参考点的PS-InSAR变形监测数据处理[J].测绘学报,2012,41(6):886-890. |
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| 作者姓名： | 朱武 张勤 丁晓利 |
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| 作者单位： | 1. 香港理工大学;
2. 长安大学地测学院;
3. 香港理工大学土地测量与地理资讯学系 |
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| 基金项目： | 国家自然科学基金，中国地质调查局国土资源大调查项目，长安大学基金 |
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| 摘 要： | 针对永久散射体干涉测量（PS-InSAR）基线网平差数据处理过程中单参考点存在导致的解不够稳定和不够可靠的问题，本文提出了一种结合地面监测资料的多参考点PS-InSAR数据处理方法，并研究推导了相应的处理模型；该方法在PS基线网处理中引入多参考点参与解算，一方面提高了解算结果的稳定性，另一方面通过增加多余观测获取最优参数解，提高了解的可靠性。本文利用覆盖西安市的13景Envisat ASAR数据以及5个角反射器（CR）、GPS点作为参考点，分别获取了单参考点和多参考点下的平均形变场，通过与4个检核点的比较，表明多参考点结果比单参考点更吻合于地面观测资料，证明了该方法的优越性。
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| 关 键 词： | PS-InSAR 基线网平差 变形监测数据处理 多参考点 |
| 收稿时间： | 2011-11-10 |
| 修稿时间： | 2012-02-13 |
PS-InSAR Deformation Monitoring Data Processing Based on Multi-reference Points |
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| ZHU Wu,ZHANG Qin,DING Xiaoli.PS-InSAR Deformation Monitoring Data Processing Based on Multi-reference Points[J].Acta Geodaetica et Cartographica Sinica,2012,41(6):886-890. |
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| Authors: | ZHU Wu ZHANG Qin DING Xiaoli |
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| Institution: | 1.College of Geology Engineering and Geomatics,Chang’an University,Xi’an 710054,China;2.Department of Land Surveying and Geo-Informatics,Hong Kong Polytechnic University,Hong Kong,China |
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| Abstract: | Single-reference point Permanent Scatterers Interferometry (PS-InSAR) can result in an unstable and unreliable solution in the data processing of baseline network adjustment. This paper advances a multi-reference points PS-InSAR data processing method by adding ground monitoring data and the corresponding mathematic model is derived. By introducing multi-reference points in the PS baseline network processing, the solution’s stability and reliability can be improved due to extra observations condition. In the experiment, thirteen Envisat ASAR images covering the Xi’an city and five reference points composing of Corner Reflectors (CR) and GPS are employed to prove the superiority of the proposed method. Processing these data, average surface deformation field from single-reference point and multi-reference points are created respectively. The results of comparing four checking points show that solution from multi-reference points is much more consistent with ground observation result than single-reference point. |
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| Keywords: | PS-InSAR baseline network adjustment deformation monitoring data processing multi-reference points |
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