Results 21 to 30 of about 222 (129)

Improved branch-cut phase unwrapping strategy based on dynamic adjacent table

The Journal of Engineering, 2019
Phase unwrapping (PU) is a key step of interferometric SAR signal processing. The accuracy of the unwrapping phase directly affects the accuracy of the digital elevation model (DEM).
Tiandong Liu, Zhengguo Shang, Jiabao Wu, Dawei Zhou, Shi Yan   +4 more
doaj   +1 more source

A Cluster-Analysis and Convex Hull-Based Fast Large-Scale Phase Unwrapping Method for Single- and Multibaseline SAR Interferograms

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023
For synthetic aperture radar (SAR) interferometry (InSAR), phase unwrapping (PU) is an important and difficult step. Due to the high computational complexities of the classical and skilled PU methods, the size and number of interferograms to be processed
Yang Lan, Hanwen Yu, Mengdao Xing, Antonio Plaza   +3 more
doaj   +1 more source

Discontinuity preserving phase unwrapping algorithm for simulated InSAR based on MRF model using line process

The Journal of Engineering, 2019
Phase unwrapping (PU) is one of the important procedures in measuring digital elevation model (DEM) from interferometric synthetic aperture radar (InSAR) images. It is known that the existence of phase discontinuity poses challenges to the traditional PU
Lifan Zhou, Yu Xia
doaj   +1 more source

Experimental Results of Three-Dimensional Modeling and Mapping with Airborne Ka-Band Fixed-Baseline InSAR in Typical Topographies of China

Remote Sensing, 2022
Interferometric synthetic aperture radar (InSAR) has become a key technology for producing high-precision digital surface models (DSMs) and digital orthophoto maps (DOMs) in full time and all weathers. Airborne millimeter-wave InSAR, with large-scale and
Jian Gao, Zhongchang Sun, Huadong Guo, Lideng Wei, Yongjie Li, Qiang Xing   +5 more
doaj   +1 more source

An Algorithm Measuring Urban Building Heights by Combining the PS-InSAR Technique and Two-Stage Programming Approach Framework

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023
Urban building heights offer critical information in studying urbanization. An approach with adequate accuracy is of significant interest. Spaceborne interferometric synthetic aperture radar (InSAR) techniques and multibaseline (MB) InSAR observations ...
Bao Zhu, Yong Wang, Hanwen Yu
doaj   +1 more source

PIPNet: A Deep Convolutional Neural Network for Multibaseline InSAR Phase Unwrapping Based on Pure Integer Programming

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Multibaseline (MB) phase unwrapping (PU), as the core step in MB InSAR, breaks the limitation of phase continuity assumption. However, it still suffers from insufficient noise robustness and low unwrapping efficiency.
Hui Liu, Ke Zheng, Changwei Miao, Xuemei Liu, Xianlin Liu, Lin Li, Yongguang Zhang, Longhai Xiong   +7 more
doaj   +1 more source

Refined Two-Stage Programming-Based Multi-Baseline Phase Unwrapping Approach Using Local Plane Model

Remote Sensing, 2019
The problem of phase unwrapping (PU) in synthetic aperture radar (SAR) interferometry (InSAR) is caused by the measured range differences being ambiguous with the wavelength. Therefore, multi-baseline (MB) is a key processing step of MB InSAR.
Yang Lan, Hanwen Yu, Mengdao Xing
doaj   +1 more source

Using Range Split-Spectrum Interferometry to Reduce Phase Unwrapping Errors for InSAR-Derived DEM in Large Gradient Region

Remote Sensing, 2022
The use of the conventional interferometric synthetic aperture radar (InSAR) to generate digital elevation models (DEMs) always encounters phase unwrapping (PU) errors in areas with a sizeable topographic gradient.
Wenfei Mao, Guoxiang Liu, Xiaowen Wang, Yakun Xie, Xiaoxing He, Bo Zhang, Wei Xiang, Shuaiying Wu, Rui Zhang, Yin Fu, Saied Pirasteh   +10 more
doaj   +1 more source

L2-norm deformation phase unwrapping in mining area driven by matrix pencil model

Meikuang Anquan
To address the limitations of traditional phase unwrapping (PU) approaches in differential interferometric synthetic aperture radar (DInSAR) technology which performs poorly in unwrapping low-coherence deformation interferograms in mining areas, an L2 ...
Lei DUAN, Xia HUA, Xiangkai ZENG, Liping CHEN, Haonan ZHANG, Rui SONG, Han XIAO   +6 more
doaj   +1 more source

Refined Two-Stage Programming Approach of Phase Unwrapping for Multi-Baseline SAR Interferograms Using the Unscented Kalman Filter

Remote Sensing, 2019
Phase unwrapping (PU) represents a key step in the reconstruction of digital elevation models (DEMs) and the monitoring of surface deformation from interferometric synthetic aperture radar (InSAR) data.
YanDong Gao, ShuBi Zhang, Tao Li, QianFu Chen, Xiang Zhang, ShiJin Li   +5 more
doaj   +1 more source