A Novel Method for InSAR Phase Unwrapping with Single Baseline

Chenxi Tian, Guoman Huang

2023

Abstract

The precision of phase unwrapping (PU), one of the primary methods used in interferometric synthetic aperture radar (InSAR), has a direct impact on the accuracy of the digital elevation model (DEM) that InSAR produces. The phase continuity assumption restricts single-baseline (SB) PU, and it is frequently hard to achieve optimal PU results in complex terrain areas with significant gradient variations. Fortunately, by utilizing numerous InSAR interferograms, or the elevation changes corresponding to each interference fringe in the interferogram, multi-baseline (MB) PU can totally overcome the restriction of the phase continuity assumption. Therefore, this paper proposes a virtual-baseline (VB) PU based on the two-stage programming (TSPA) MB PU approach to transform the SB PU problem into a MB PU problem. The novel method can be referred to as VB-TSPA. First, the effect of baseline length on MB PU is comprehensively considered to determine the virtual baseline length. Then a corresponding interferogram is simulated according to the length. Finally, the TSPA method is used for the MB PU. The experimental results from simulated and real data demonstrate that the novel PU method has a better effect than the traditional SB PU algorithm and can obtain higher precision DEM.

Paper Citation

in Harvard Style

Tian C. and Huang G. (2023). A Novel Method for InSAR Phase Unwrapping with Single Baseline. In Proceedings of the 9th International Conference on Geographical Information Systems Theory, Applications and Management - Volume 1: GISTAM, ISBN 978-989-758-649-1, SciTePress, pages 60-68. DOI: 10.5220/0011839300003473

in Bibtex Style

@conference{gistam23,
author={Chenxi Tian and Guoman Huang},
title={A Novel Method for InSAR Phase Unwrapping with Single Baseline},
booktitle={Proceedings of the 9th International Conference on Geographical Information Systems Theory, Applications and Management - Volume 1: GISTAM,},
year={2023},
pages={60-68},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0011839300003473},
isbn={978-989-758-649-1},
}

in EndNote Style

TY - CONF

JO - Proceedings of the 9th International Conference on Geographical Information Systems Theory, Applications and Management - Volume 1: GISTAM,
TI - A Novel Method for InSAR Phase Unwrapping with Single Baseline
SN - 978-989-758-649-1
AU - Tian C.
AU - Huang G.
PY - 2023
SP - 60
EP - 68
DO - 10.5220/0011839300003473
PB - SciTePress