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PALSAR可检测的最大/最小地表形变梯度的统一函数模型

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基于相干性和离散视数,建立PALSAR干涉可检测的最大和最小形变梯度的经验函数模型。在此基础上,采用最小二乘回归的方法拟合模型系数,建立关于相干性和视数两个参数的统一函数模型。利用汶川地区的PALSAR数据进行实验,结果表明该模型能够准确判别地表变形能否被D-InSAR技术检测到。研究结果可以帮助研究人员准确选择PALSAR数据和合理配置其干涉处理参数,对解释地表形变结果也具有重要的价值。
Generalized functional model of maximum and minimum detectable deformation gradient for PALSAR interferometry
Empirical functional models for the maximum and minimum detectable deformation gradient of PALSAR interferometry were established based on coherence and discrete look numbers. Then, a least square regression method was used to fit the model coefficients and thus obtain the generalized functional models for both coherence and look numbers. The experimental results with ALOS PALSAR data of Wenchuan earthquake of China show that the new model works well for judging whether the deformation gradient can be detected by the D-InSAR technology or not. The results can help researchers to choose PALSAR data and to configure processing parameters, and also benefit the interpretation of the measured surface deformation.

PALSARD-InSARdeformation gradientcoherencemultilook numberfunctional model

王琪洁、李志伟、杜亚男、谢荣安、张杏清、蒋弥、朱建军

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中南大学 地球科学与信息物理学院,长沙 410083

广东省地质测绘院,广州 510800

PALSAR D-InSAR 形变梯度 相干性 视数 函数模型

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNatural Science Foundation of Hunan Province, China

41222227U123110513JJ1006

2014

中国有色金属学报(英文版)
中国有色金属学会

中国有色金属学报(英文版)

CSTPCDCSCDSCIEI
影响因子:1.183
ISSN:1003-6326
年,卷(期):2014.(3)
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