Three deterministic constructions of compressed sensing matrices with low coherence
Sign Up to like & getrecommendations! Published in 2019 at "Cryptography and Communications"
DOI: 10.1007/s12095-019-00375-5
Abstract: Matrices with low coherence have applications in compressed sensing and some other areas. In this paper, we present three deterministic constructions of compressed sensing matrices by using algebraic and combinatorial methods. We show that our… read more here.
Keywords: deterministic constructions; compressed sensing; three deterministic; matrices low ... See more keywords
Low-coherence interferometric measurement of the spatial frequency dependence of the light field backscattered by optical interfaces
Sign Up to like & getrecommendations! Published in 2023 at "Applied Physics Letters"
DOI: 10.1063/5.0139822
Abstract: In this paper, we show how the combined use of low-coherence interferometry, balanced detection, and data processing comparable to that used in Fourier transform spectrometry allows us to characterize with ultimate resolutions (sub-parts per million… read more here.
Keywords: interferometric measurement; coherence; low coherence; coherence interferometric ... See more keywords
Tunable low-coherence light source with high spectral brightness
Sign Up to like & getrecommendations! Published in 2021 at "Quantum Electronics"
DOI: 10.1070/qel17527
Abstract: Operation of a tunable tandem-type low-coherence light source with high spectral brightness based on commercially available optical elements (superluminescent diode, semiconductor optical amplifier, and bulk dwiffraction grating) is studied experimentally. A unique combination of the… read more here.
Keywords: source high; light source; low coherence; source ... See more keywords
Optical form measurement employing a tiltable line scanning, low coherence interferometer for annular subaperture stitching interferometry
Sign Up to like & getrecommendations! Published in 2021 at "Measurement Science and Technology"
DOI: 10.1088/1361-6501/abfe83
Abstract: This contribution presents experimental and simulation results of a tiltable line scanning low coherence interferometer applied for form measurement of spherical and aspherical objects with a diameter of up to 300 mm. The region of… read more here.
Keywords: form measurement; coherence interferometer; line scanning; tiltable line ... See more keywords
Precise Identification of Wideband Multiple Microwave Frequency Based on Self-Heterodyne Low-Coherence Interferometry
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Lightwave Technology"
DOI: 10.1109/jlt.2021.3064866
Abstract: Frequency estimation of microwave signals is a crucial functionality for applications ranging from biomedical engineering to electronic warfare systems. Photonics-based frequency measurement systems offer advantages of flexible reconfigurability and wide bandwidth compard to electronic methods.… read more here.
Keywords: coherence interferometry; low coherence; frequency; identification ... See more keywords
An Improved Optical Fiber Remote Sensing Method Based on Polarized Low-Coherence Interferometry
Sign Up to like & getrecommendations! Published in 2018 at "IEEE Photonics Journal"
DOI: 10.1109/jphot.2017.2785124
Abstract: We proposed an improved phase-based method by using a filtering window on the low-coherence interferogram. Through theoretical derivation and numerical simulation, we prove the correction of our proposed method that the fringe phase can be… read more here.
Keywords: phase; method; remote sensing; fiber ... See more keywords
Airborne InSAR Interferometric Phase Analysis, Unwrapping Method, and Fast Implementation in Low Coherence Areas
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing"
DOI: 10.1109/jstars.2020.3020148
Abstract: Due to synthetic aperture radar (SAR) imaging geometry and scattering characteristics, there are some low coherence areas in interferometric SAR (InSAR) data, such as shadow and water, where the interferometric phase is discontinuous. Therefore, it… read more here.
Keywords: low coherence; unwrapping method; coherence areas; interferometric phase ... See more keywords
A Sequential Approach for Sentinel-1 TOPS Time-Series Co-Registration Over Low Coherence Scenarios
Sign Up to like & getrecommendations! Published in 2021 at "IEEE Transactions on Geoscience and Remote Sensing"
DOI: 10.1109/tgrs.2020.3009996
Abstract: In the coming era of synthetic aperture radar (SAR) big data, the in-orbit Sentinel-1 mission will provide unprecedented data with an increasing volume. As a fundamental step of time-series analysis for such large and growing… read more here.
Keywords: registration; low coherence; time series;
Low-coherence interferometry for phase-sensitive measurement of optical rotation.
Sign Up to like & getrecommendations! Published in 2018 at "Applied optics"
DOI: 10.1364/ao.57.005893
Abstract: We present phase-sensitive measurement of optical rotation using spectral-domain and time-domain low-coherence interferometry. The method utilizes two decorrelated polarization states and simultaneous dual-channel detection provided by polarization-maintaining fiber-based implementation. The sample is placed between polarization… read more here.
Keywords: low coherence; rotation; optical rotation; phase sensitive ... See more keywords
Measurement of a true Brillouin grating distribution generated at mated fiber connectors with optical low coherence reflectometry coupled with dispersive Fourier spectroscopy.
Sign Up to like & getrecommendations! Published in 2018 at "Applied optics"
DOI: 10.1364/ao.57.009669
Abstract: We previously reported a reflectogram from mated fiber connectors that was measured at a spatial resolution of 100 μm with Brillouin-gating-based optical low coherence reflectometry, and that agreed with a theoretical curve calculated by assuming that… read more here.
Keywords: coherence; grating distribution; brillouin grating; spectroscopy ... See more keywords
Low-cost hand-held probe for depth-resolved low-coherence interferometry.
Sign Up to like & getrecommendations! Published in 2017 at "Biomedical optics express"
DOI: 10.1364/boe.8.000338
Abstract: We report on the development of a low-cost hand-held low-coherence interferometric imaging system based on the principle of linear optical coherence tomography (Linear OCT), a technique which was first proposed in the early 2000s as… read more here.
Keywords: system; coherence; hand held; low coherence ... See more keywords