时序InSAR干涉组合网络优化方法及适应性分析  

Interferometric combination network optimization method and its adaptability analysis of MT-InSAR

作　　者：艾强 曾春琴 Ai Qiang;Zeng Chunqin(Huizhou Natural Resources Planning and Survey Institute,Huizhou 516000,China;Natural Resources Bureau of BoLuo County,Huizhou 516100,China)

机构地区：[1]惠州市自然资源规划勘测院,广东惠州516000 [2]博罗县自然资源局,广东惠州516100

出　　处：《工程勘察》2023年第8期67-71,78,共6页Geotechnical Investigation & Surveying

摘　　要：时序InSAR(Time Series InSAR,TS-InSAR)技术因少受云雨影响、精度高、多时相等优势,已被广泛应用于地表形变监测。干涉组合是时序InSAR分析技术的重要前提,其干涉组合的数量及网型分布直接影响参数解算的计算效率和精度。尽管目前已有多种干涉组合方法相继被提出,但各种方法的特点及适用性还缺乏综合性评估与分析。为此,本文分别对10景L波段ALOS-1 PALSAR和256景C波段Sentinel-1两种数据集,应用9种干涉组合方法进行实验分析。初步结果表明,面对早期SAR数据,融合多种干涉组合方法更有利于获得理想的干涉组合网络;而对于重访周期较短的新型SAR数据,选用干涉组合方法时更需要兼顾计算效率和网络质量。Multi-Temporal InSAR(MT-InSAR)technology has been widely used in surface deformation detection because it is less affected by clouds and rain,high accuracy and multi-temporal ability.Choosing interferometric pair is an important premise of MT-InSAR.The number and network distribution of interferometric combination directly affect the calculation efficiency and accuracy of parameter solution.Although a variety of interference combination methods have been proposed one after another,the characteristics and applicability of various methods are still lack of comprehensive evaluation and analysis.Therefore,nine interference combination methods are applied to the experimental analysis of 10 scene L-band Alos-1 PALSAR and 256 scene C-band sentinel-1 data sets.The preliminary results show that in the face of early SAR data,the fusion of multiple interferometric combination methods is more conducive to obtain an ideal interferometric combination network;For the new SAR data with short revisit period,the calculation efficiency and network quality need to be considered when choosing the interferometric combination method.

关 键 词：干涉组合 网络优化 时序InSAR 相干性 

分 类 号：P237[天文地球—摄影测量与遥感]