发表机构
Bureau of Economic Geology, Jackson School of Geosciences, University of Texas at Austin; Department of Earth and Space Sciences, Southern University of Science and Technology; State Key Laboratory of Earthquake Dynamics and Forecasting, Institute of Geology, China Earthquake Administration; Earth Observatory of Singapore, Nanyang Technological University（德克萨斯大学奥斯汀分校杰克逊地球科学学院经济地质局; 南方科技大学地球与空间科学系; 中国地震局地质研究所地震动力学和预报国家重点实验室; 南洋理工大学新加坡地球观测站）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文提出多轨时序突发重叠干涉测量（MTSB）框架，利用相位链接与频谱分析解决InSAR南北向形变不敏感问题，在震间、同震和震后场景中实现厘米级位移与毫米每年速度精度，并改善板块与断层运动学约束。
AI 中文摘要
干涉合成孔径雷达（InSAR）由于其近极地几何构型，本质上对地壳运动的南北分量不敏感，这使得准确量化该形变成为InSAR的一个长期局限性。我们提出了一种多轨时序突发重叠干涉测量（MTSB）框架，该框架通过结合优化的相位链接、用于分离形变和残余配准误差的统一时序框架以及分块频谱分析，在代表性的震间、同震和震后应用中提供绝对、ITRF参考的形变场。涵盖同震、震间和震后阶段的案例研究表明，MTSB能够准确解析沿轨水平形变，主要对南北向运动敏感，同时大幅减少与轨道相关的伪影。与GNSS的独立比较表明，震后和同震位移估计达到厘米级一致性，震间速度达到毫米每年级一致性。所得形变场改善了对区域板块运动学和断层运动学的约束，促进了更可靠的欧拉极估计，并为常规InSAR处理提供了轨道校正副产品。
英文摘要
Interferometric Synthetic Aperture Radar (InSAR) is intrinsically insensitive to the north-south component of crustal motion because of its near-polar geometry, which makes accurate quantification of this deformation a persistent limitation of InSAR. We introduce a Multi-track Time-Series Burst-Overlap Interferometry (MTSB) framework that delivers absolute, ITRF-referenced deformation fields across representative interseismic, coseismic, and postseismic applications by combining optimized phase linking, a unified time-series framework for separating deformation and residual misregistration, and block-wise spectral analysis. Case studies spanning co-, inter-, and postseismic phases demonstrate that MTSB accurately resolves along-track horizontal deformation, with primary sensitivity to north-south motion, while substantially reducing orbit-related artifacts. Independent comparisons with GNSS indicate centimeter-level agreement for postseismic and coseismic displacement estimates and millimeter-per-year agreement for interseismic velocities. The resulting deformation fields improve constraints on regional plate kinematics and fault kinematics, facilitate more reliable Euler-pole estimation, and provide by-product orbital corrections for conventional InSAR processing.
