Dr. Shane D. Mayor Profile

Dr. Shane D. Mayor

Associate Professor at California State Univ Chico

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Publications (11)

Proceedings Article | 20 April 2016 Paper

Improving the detection of wind fields from LIDAR aerosol backscatter using feature extraction

Brady Bickel, Eric Rotthoff, Gage Walters, Timothy Kane, Shane Mayor

Proceedings Volume 9845, 98450A (2016) https://doi.org/10.1117/12.2223932

KEYWORDS: LIDAR, Aerosols, Backscatter, Detection and tracking algorithms, Image filtering, Image segmentation, Image processing, Image registration, Doppler effect, Clouds

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SPIE Journal Paper | 29 March 2016 Open Access

Comparison of an analog direct detection and a micropulse aerosol lidar at 1.5-μm wavelength for wind field observations—with first results over the ocean

Shane Mayor, Pierre Dérian, Christopher Mauzey, Scott Spuler, Patrick Ponsardin, Jeff Pruitt, Darrell Ramsey, Noah Higdon

JARS, Vol. 10, Issue 01, 016031, (March 2016) https://doi.org/10.1117/12.10.1117/1.JRS.10.016031

KEYWORDS: LIDAR, Aerosols, Backscatter, Analog electronics, Signal to noise ratio, Linear filtering, Sensors, Motion estimation, Digital filtering, Receivers

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Proceedings Article | 1 September 2015 Paper

Comparison of aerosol backscatter and wind field estimates from the REAL and the SAMPLE

Shane Mayor, Pierre Dérian, Christopher Mauzey, Scott Spuler, Patrick Ponsardin, Jeff Pruitt, Darrell Ramsey, Noah Higdon

Proceedings Volume 9612, 96120G (2015) https://doi.org/10.1117/12.2187538

KEYWORDS: Backscatter, Signal to noise ratio, Aerosols, LIDAR, Photon counting, Sensors, Motion estimation, Statistical analysis, Analog electronics, Transmitters

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Proceedings Article | 1 September 2015 Paper

Two-component wind fields from single scanning aerosol lidar

Shane Mayor, Pierre Derian, Christopher Mauzey, Masaki Hamada

Proceedings Volume 9612, 96120D (2015) https://doi.org/10.1117/12.2187502

KEYWORDS: LIDAR, Electroluminescent displays, Aerosols, Motion estimation, Doppler effect, Ocean optics, Atmospheric particles, Turbulence, Simulation of CCA and DLA aggregates, Backscatter

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Proceedings Article | 17 September 2013 Paper

Two-component wind fields from scanning aerosol lidar and motion estimation algorithms

Shane Mayor, Pierre Dérian, Christopher Mauzey, Masaki Hamada

Proceedings Volume 8872, 887208 (2013) https://doi.org/10.1117/12.2025337

KEYWORDS: Backscatter, LIDAR, Motion estimation, Optical flow, Aerosols, Doppler effect, Wind measurement, Image compression, Wavelets, Turbulence

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Proceedings Article | 17 September 2013 Paper

Recent improvements to the Raman-shifted eye-safe aerosol lidar (REAL)

Shane Mayor, Anna Petrova-Mayor, Bruce Morley, Scott Spuler

Proceedings Volume 8872, 88720B (2013) https://doi.org/10.1117/12.2025318

KEYWORDS: Mirrors, LIDAR, Computing systems, Polarization, Aerosols, Control systems, Receivers, Backscatter, Transmitters, Atmospheric particles

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Proceedings Article | 18 January 2011 Paper

Raman-shifted eye-safe aerosol lidar (REAL) in 2010: instrument status and two-component wind measurements

Shane Mayor

Proceedings Volume 7747, 77470P (2011) https://doi.org/10.1117/12.883454

KEYWORDS: LIDAR, Aerosols, Mirrors, Backscatter, Receivers, Doppler effect, Atmospheric particles, Transmitters, Wind measurement, Avalanche photodetectors

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This paper and corresponding seminar given on 20 September 2010 at the 16th International School for Quantum Electronics in Nesebar, Bulgaria, will describe the key hardware aspects of the Raman-shifted Eye-safe Aerosol Lidar (REAL) and recent advances in extracting two-component wind vector fields from the images it produces. The REAL is an eye-safe, ground-based, scanning, elastic aerosol backscatter lidar operating at 1.54 microns wavelength. Operation at this wavelength offers several advantages compared to other laser wavelengths including: (1) maximum eye-safety, (2) invisible beam, (3) superior performance photodetectors compared with those used at longer wavelengths, (4) low atmospheric molecular scattering when compared with operation at shorter wavelengths, (5) good aerosol backscattering, (6) atmospheric transparency, and (7) availability of optical and photonic components used in the modern telecommunations industry. A key issue for creating a high-performance direct-detection lidar at 1.5 microns is the use of InGaAs avalanche photodetectors that have active areas of at most 200 microns in diameter. The small active area imposes a maximum limitation on the field-of-view of the receiver (about 0.54 mrad full-angle for REAL). As a result, a key requirement is a transmitter that can produce a pulsed (>10 Hz) beam with low divergence (<0.25 mrad full-angle), high pulse-energy (>150 mJ), and short pulse-duration (<10 ns). The REAL achieves this by use of a commercially-available flashlamp-pumped Nd:YAG laser and a custom high-pressure methane gas cell for wavelength shifting via stimulated Raman scattering. The atmospheric aerosol features in the images that REAL produces can be tracked to infer horizontal wind vectors. The method of tracking macroscopic aerosol features has an advantage over Doppler lidars in that two components of motion can be sensed. (Doppler lidars can sense only the radial component of flow.) Two-component velocity estimation is done by computing two-dimensional cross-correlation functions (CCFs) and noting the displacement of the peak of the CCF with respect to the origin. Motion vectors derived from this method are compared with coincident sonic anemometer measurements at 1.6 km range. Preliminary results indicate the method performs best when the atmosphere is stable with light winds.

Proceedings Article | 24 September 2007 Paper

Eye-safe aerosol lidar at 1.5 microns: progress toward a scanning lidar network

Scott Spuler, Shane Mayor

Proceedings Volume 6681, 668102 (2007) https://doi.org/10.1117/12.739519

KEYWORDS: Aerosols, LIDAR, Backscatter, Atmospheric particles, Optical filters, Scattering, Calibration, Atmospheric monitoring, Atmospheric optics, Transmitters

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SPIE Journal Paper | 1 September 2007

Polarization lidar at 1.54 µm and observations of plumes from aerosol generators

Shane Mayor, Scott Spuler, Bruce Morley, Eric Loew

OE, Vol. 46, Issue 09, 096201, (September 2007) https://doi.org/10.1117/12.10.1117/1.2786406

KEYWORDS: Aerosols, LIDAR, Polarization, Atmospheric particles, Backscatter, Mirrors, Sensors, Optical filtering, Optical engineering, Receivers

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SPIE Journal Paper | 1 August 2007

Infrared phototransistor validation for atmospheric remote sensing application using the Raman-shifted eye-safe aerosol lidar

Tamer Refaat, Syed Ismail, Terry Mack, M. Nurul Abedin, Shane Mayor, Scott Spuler, Upendra Singh

OE, Vol. 46, Issue 08, 086001, (August 2007) https://doi.org/10.1117/12.10.1117/1.2772280

KEYWORDS: Phototransistors, LIDAR, Sensors, Avalanche photodetectors, Atmospheric sensing, Signal to noise ratio, Infrared sensors, Remote sensing, Indium gallium arsenide, Infrared photography

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Proceedings Article | 19 August 2005 Paper

Scanning eye-safe depolarization lidar at 1.54 microns and potential usefulness in bioaerosol plume detection

Shane Mayor, Scott Spuler, Bruce Morley

Proceedings Volume 5887, 58870N (2005) https://doi.org/10.1117/12.620361

KEYWORDS: Aerosols, LIDAR, Backscatter, Sensors, Raman spectroscopy, Receivers, Atmospheric particles, Mirrors, Beam splitters, Polarization

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Showing 5 of 11 publications

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