| 一种基于TerraSAR数据的矿区InSAR最大可检测动态形变梯度模型 |
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| 引用本文： | 高 建,陈炳乾,冯遵德.一种基于TerraSAR数据的矿区InSAR最大可检测动态形变梯度模型[J].大地测量与地球动力学,2020,40(11):1175-1181. |
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| 作者姓名： | 高 建 陈炳乾 冯遵德 |
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| 摘 要： | 受传感器本身的限制及噪声、大气延迟等影响，InSAR技术可检测的最大形变梯度存在极限。为准确预计InSAR技术在矿区形变监测中的检测能力，以65个矿区的地质采矿资料为基础，结合Knothe时间函数和概率积分模型，利用不同空间分辨率的TerraSAR数据，建立矿区InSAR最大形变梯度动态检测函数模型。该模型无需事先获取SAR影像，利用矿区现有的地质采矿资料即可判断InSAR在矿区不同开采阶段的可检测区间。以陕西大柳塔矿区为例，采用2012-11-21~2013-01-26的7景TerraSAR数据进行模型验证，结果表明，该模型不仅能够准确预测InSAR技术在矿区不同开采阶段的检测区间，同时可以确定InSAR技术在矿区不同开采阶段的地表可检测边界，可为InSAR技术在矿区中的推广应用提供重要参考。
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| 关 键 词： | InSAR 形变梯度 动态模型 Knothe时间函数 TerraSAR |
A Maximum Detectable Dynamic Deformation Gradient Model of InSAR Based on TerraSAR Data |
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| GAO Jian,CHEN Bingqian,FENG Zunde.A Maximum Detectable Dynamic Deformation Gradient Model of InSAR Based on TerraSAR Data[J].Journal of Geodesy and Geodynamics,2020,40(11):1175-1181. |
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| Authors: | GAO Jian CHEN Bingqian FENG Zunde |
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| Abstract: | Due to the sensor limits and effect of noise and atmospheric delay, the maximum deformation gradient detected by InSAR technology has a limit. In order to accurately predict the detection ability of InSAR technology in deformation monitoring of mining area, this paper establishes the dynamic detection function model of maximum deformation gradient of InSAR based on the geological mining data of 65 mining areas, combined with Knothe time function and probability integral model, using TerraSAR data of different spatial resolutions. The model can use existing geological mining data to judge the detectable range of InSAR in different mining stages without SAR image in advance. In this paper, taking Daliuta mining area in Shanxi Province as an example, seven TerraSAR data from November 21, 2012 to January 26, 2013 are used for experimental verification. The results show that the model can accurately predict the detectable range and determine the detectable boundary of InSAR technology in different mining stages of mining area,which can provide important reference for the application of InSAR technology in mining area. |
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| Keywords: | InSAR deformation gradient dynamic model Knothe time function TerraSAR |
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