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Robust audio localization with phase unwrapping
2017 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2017Most of multichannel sound source Direction Of Arrival (DOA) estimation algorithms suffer from spatial aliasing problems. The phase differences between a pair of microphones are wrapped beyond the spatial aliasing frequency. A common solution is to adjust the distance between the microphones to obtain a suitable aliasing frequency, and take only the ...
Kainan Chen +2 more
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An Improved Phase-Unwrapping Method for Unwrapped Phase based RFID Localization
2023 IEEE 13th International Conference on RFID Technology and Applications (RFID-TA), 2023Wenhe Wang +4 more
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Interface propagation method in phase unwrapping
2016 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2016Path following algorithms employ information from phase residues or data quality, typically in a independent mode for the difference between the distribution discreteness of residues and the distribution continuity of data quality values. Residues are taken as sources for interface propagation, and the quality of phase data weigh against the ...
Jian Gao 0019, Jun Li, Lei Shi
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Swarm-based algorithm for phase unwrapping
Applied Optics, 2014A novel algorithm for phase unwrapping based on swarm intelligence is proposed. The algorithm was designed based on three main goals: maximum coverage of reliable information, focused effort for better efficiency, and reliable unwrapping. Experiments were performed, and a new agent was designed to follow a simple set of five rules in order to ...
Lucas, da Silva Maciel +1 more
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InSAR phase unwrapping: a polarimetric approach
RADAR 2002, 2003This paper addresses a polarimetric approach to improve the interferometric phase estimation based on an extension of the ESPRIT algorithm applied to different kinds of scatterers. The basics of SAR interferometry are presented. The article introduces the ESPRIT algorithm using polarimetric data with a description of the scattering model, the ESPRIT ...
Guillaso, Stéphane +3 more
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Hierarchical network flow phase unwrapping
IEEE Transactions on Geoscience and Remote Sensing, 2002The well-studied interferometric synthetic aperture radar (InSAR) problem for digital elevation map generation involves the derivation of topography from the radar phase. The topography is a function of the full phase, whereas the measured phase is known modulo 2/spl pi/, necessitating the process of recovering full phase values via phase unwrapping ...
Gabriel F. Carballo, Paul W. Fieguth
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A Phase Unwrapping Algorithm for Interferometric Phase Images
2015Phase unwrapping is the most complicated and unreliable stage of interferometric data processing, which is often used in remote sensing techniques. For real radar scenes, the phase unwrapping problem doesn’t have a unique solution due to phase discontinuity caused by the phase noise and aliasing.
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Temporal phase unwrapping algorithms for fringe projection profilometry: A comparative review
Optics and Lasers in Engineering, 2016Chao Zuo, Lei Huang, Qian Chen
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