Dr. Alan Marchant Profile

Dr. Alan Marchant

Research Professor at Utah State Univ

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Author

Publications (8)

Proceedings Article | 30 August 2019 Presentation + Paper

The GLO (GFCR Limb Occultation) sensor: a new sensor concept for upper troposphere and lower stratosphere (UTLS) composition and transport studies

Daniel Korwan, Richard Bevilacqua, Sergio Restaino, Justin Bobak, Freddie Santiago, Karl Hoppel, Scott Bailey, Stephen Noel, Justin Carstins, Cora Randall, Larry Gordley, Tom Marshall, Alan Marchant

Proceedings Volume 11131, 111310K (2019) https://doi.org/10.1117/12.2530708

KEYWORDS: Sensors, Signal to noise ratio, Aerosols, Staring arrays, Sun, Atmospheric modeling, Optical benches, Troposphere, Stratosphere, Image processing

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Proceedings Article | 19 September 2016 Presentation + Paper

Design and demonstration of a CubeSat-scale spatial heterodyne imaging spectrometer

Alan Marchant

Proceedings Volume 9978, 997809 (2016) https://doi.org/10.1117/12.2236724

KEYWORDS: Methane, Spectroscopy, Optical design, Calibration, Cameras, Staring arrays, Ions, Short wave infrared radiation, Space operations, Infrared radiation

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Proceedings Article | 12 September 2014 Paper

Feasibility considerations for a long-range passive vibrometer

Alan Marchant, Chad Fish, Jie Yao, Phillip Cunio, Wellesley Pereira

Proceedings Volume 9219, 92190F (2014) https://doi.org/10.1117/12.2064419

KEYWORDS: Sensors, Bidirectional reflectance transmission function, Signal to noise ratio, Staring arrays, Modulation, Spatial resolution, Scattering, Data processing, Scintillation, Telescopes

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Proceedings Article | 21 May 2011 Paper

Characterization of a quantum cascade laser-based emissivity monitor for CORSAIR

Maung Lwin, Michael Wojcik, Harri Latvakoski, Deron Scott, Mike Watson, Alan Marchant, Shane Topham, Martin Mlynczak

Proceedings Volume 8012, 80123M (2011) https://doi.org/10.1117/12.884260

KEYWORDS: Quantum cascade lasers, Black bodies, Copper, Temperature metrology, Sensors, Signal detection, Mid-IR, Infrared radiation, Environmental sensing, Surgery

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Proceedings Article | 26 October 2010 Paper

ValidWind applications: wind power prospecting, aerosol transport

T. Wilkerson, A. Marchant, T. Apedaile, D. Scholes, J. Simmons, B. Bradford

Proceedings Volume 7832, 783207 (2010) https://doi.org/10.1117/12.868157

KEYWORDS: Sensors, Wind energy, Cameras, Aerosols, Retroreflectors, Remote sensing, LIDAR, Optical tracking, Automatic tracking, Zoom lenses

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SPIE Journal Paper | 1 April 2010

Conspicuity tape for enhanced laser range finding

Alan Marchant, Kyle Jeppson, Ryan Scott

OE, Vol. 49, Issue 04, 046401, (April 2010) https://doi.org/10.1117/12.10.1117/1.3378104

KEYWORDS: Retroreflectors, Sensors, Bidirectional reflectance transmission function, Scattering, Laser range finders, Optical engineering, Reflection, Speckle, Solids, Laser scattering

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Proceedings Article | 9 October 2009 Paper

VisibleWind: wind profile measurements at low altitude

Tom Wilkerson, Bill Bradford, Alan Marchant, Tom Apedaile, Cordell Wright

Proceedings Volume 7479, 74790L (2009) https://doi.org/10.1117/12.832046

KEYWORDS: Wind measurement, Wind energy, Sensors, LIDAR, Remote sensing, Atmospheric modeling, Data modeling, Imaging systems, Meteorology, Wind turbine technology

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VisibleWind^TM is developing an inexpensive rapid response system, for accurately characterizing wind shear and small scale wind phenomena in the boundary layer and for prospecting suitable locations for wind power turbines. The ValidWind system can also collect reliable "ground truth" for other remote wind sensors. The system employs small (0.25 m dia.) lightweight balloons and a tracker consisting of an Impulse 200 XL laser rangefinder coupled to a PC for automated data recording. Experiments on balloon trajectories demonstrate that the laser detection of range (± 0.5 m), together with measured azimuth and altitude, is an inexpensive, convenient, and capable alternative to other wind tracking methods. The maximum detection range has been increased to 2200 meters using micro-corner-cube retroreflector tape on balloons. Low power LEDs enable nighttime tracking. To avoid large balloon gyrations about the mean trajectory, we use balloons having low ascent rates and subcritical Reynolds numbers. Trajectory points are typically recorded every 4 - 7 seconds. Atmospheric features observed under conditions of inversions or "light and variable winds" include abrupt onsets of shear at altitudes of 100-250 m, velocity changes of order 1-3 m/s within layers of 10-20 m thickness, and veering of the wind direction by 180 degrees or more as altitude increases from 300 to 500 m. We have previously reported comparisons of balloon-based wind profiles with the output of a co-located sodar. Even with the Impulse rangefinder, our system still requires a "man in the loop" to track the balloon. A future system enhancement will automate balloon tracking, so that laser returns are obtained automatically at 1 Hz. While balloon measurements of large-scale, high altitude wind profiles are well known, this novel measurement system provides high-resolution, real-time characterization of the fluctuating local wind fields at the bottom of the boundary layer where wind power turbines and other remote wind sensors must operate.

Proceedings Article | 12 August 2009 Paper

VisibleWind: a rapid-response system for high-resolution wind profiling

Tom Wilkerson, Bill Bradford, Alan Marchant, Cordell Wright, Tom Apedaile, Eve Fowles, Allen Howard, Tom Naini

Proceedings Volume 7460, 746009 (2009) https://doi.org/10.1117/12.826368

KEYWORDS: LIDAR, Wind measurement, Sensors, Profiling, Atmospheric modeling, Imaging systems, Automatic tracking, Atmospheric sciences, Remote sensing, Atmospheric monitoring

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Showing 5 of 8 publications

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