Modeling PSInSAR Time Series Without Phase Unwrapping
نویسندگان
چکیده
منابع مشابه
Edgelist phase unwrapping algorithm for time series InSAR analysis.
We present here a new integer programming formulation for phase unwrapping of multidimensional data. Phase unwrapping is a key problem in many coherent imaging systems, including time series synthetic aperture radar interferometry (InSAR), with two spatial and one temporal data dimensions. The minimum cost flow (MCF) [IEEE Trans. Geosci. Remote Sens. 36, 813 (1998)] phase unwrapping algorithm d...
متن کاملPhase Unwrapping
Phase unwrapping is the reconstruction of the originaltrue phase of a wave from its modulo 2p values. It origi-nates in a variety of applications, such as synthetic aper-ture radar, magnetic resonance imaging, and adaptiveoptics. In this article, the problem of two-dimensionalphase unwrapping is defined and the challenges are ad-dressed. A variety of established approach...
متن کاملPhase unwrapping in three dimensions with application to InSAR time series.
The problem of phase unwrapping in two dimensions has been studied extensively in the past two decades, but the three-dimensional (3D) problem has so far received relatively little attention. We develop here a theoretical framework for 3D phase unwrapping and also describe two algorithms for implementation, both of which can be applied to synthetic aperture radar interferometry (InSAR) time ser...
متن کاملA Statistical-cost Approach to Unwrapping the Phase of Insar Time Series
Fully 3-D phase-unwrapping algorithms are commonly based on the central assumption that the phase difference between neighbouring sample points in any dimension is generally less than half a phase cycle (the Nyquist criteria). In the case of InSAR time series, however, signals are correlated spatially but uncorrelated over the repeatpass time, due chiefly to changes in atmospheric delay. Here I...
متن کاملComparison of Two Phase Unwrapping Methods for Psp Time Series Analysis
Phase unwrapping is a key issue for PSP (Permanent Scatters Pairs) time series analysis. In this paper, the LLL method and grid search method are applied for determining elevation error and velocity difference in LOS for each PSP, and the RMS is used to assess the correctness of the solution. The Delaunay triangulation is used to formulate PSPs, which are used to unwrap elevations and velocitie...
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ژورنال
عنوان ژورنال: IEEE Transactions on Geoscience and Remote Sensing
سال: 2011
ISSN: 0196-2892,1558-0644
DOI: 10.1109/tgrs.2010.2052625