Prof. Douglas G. Currie Profile

Prof. Douglas G. Currie

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Publications (9)

Proceedings Article | 5 January 2018 Open Access

Next-generation laser retroreflectors for GNSS, solar system exploration, geodesy, gravitational physics and earth observation

S. Dell’Agnello, A. Boni, C. Cantone, E. Ciocci, M. Martini, G. Patrizi, M. Tibuzzi, G. Delle Monache, R. Vittori, G. Bianco, D. Currie, N. Intaglietta, L. Salvatori, C. Lops, S. Contessa, L. Porcelli, C. Mondaini, P. Tuscano, M. Maiello

Proceedings Volume 10563, 1056317 (2018) https://doi.org/10.1117/12.2304232

KEYWORDS: Mars, Retroreflectors, Satellite navigation systems, Ranging, Solar system, Astronomical imaging, Geodesy, Physics, Laser applications, Satellites

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Proceedings Article | 6 October 2015 Paper

Lunar laser ranging and limits due to the Earth’s atmosphere

Douglas Currie, Ivan Prochazka

Proceedings Volume 9614, 96140C (2015) https://doi.org/10.1117/12.2190834

KEYWORDS: Ranging, Earth's atmosphere, Retroreflectors, Satellites, Turbulence, Pulsed laser operation, Atmospheric modeling, General relativity, Meteorology, Atmospheric propagation

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Proceedings Article | 7 October 2014 Paper

Atmospheric effects and ultimate ranging accuracy for lunar laser ranging

Douglas Currie, Ivan Prochazka

Proceedings Volume 9224, 92240C (2014) https://doi.org/10.1117/12.2062825

KEYWORDS: Ranging, Turbulence, Retroreflectors, Satellites, Pulsed laser operation, Atmospheric propagation, General relativity, Distance measurement, Satellite laser ranging, Spatial resolution

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Proceedings Article | 28 August 2001 Paper

Autonomous UV-enhanced-vision system for landing on CAT I runways during CAT IIIa weather conditions

Victor Norris, Douglas Currie

Proceedings Volume 4363, (2001) https://doi.org/10.1117/12.438021

KEYWORDS: Fourier transforms, Sensors, Visibility through fog, Visibility, Global Positioning System, Synthetic vision, Databases, Fiber optic gyroscopes, Ultraviolet radiation, Computed tomography

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Proceedings Article | 7 July 2000 Paper

Hypervelocity jets and homuncular motion in eta Carinae: an application of Fabry-Perot, ADONIS, and AO sofware

Douglas Currie, David Le Mignant, Birgitta Svensson, Emiliano Diolaiti, Sebastien Tordo, Katrin Naesgarde, Johan Liwing, Orazio Bendinelli, Gianluigi Parmeggiani, Domenico Bonaccini

Proceedings Volume 4007, (2000) https://doi.org/10.1117/12.390378

KEYWORDS: Stars, Doppler effect, Data modeling, Adaptive optics, Telescopes, Space telescopes, Polonium, Motion measurement, Fabry–Perot interferometers, Spectroscopy

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Proceedings Article | 7 July 2000 Paper

ESO photometric and astrometric analysis program for AO: a programmatic and numerical analysis

Douglas Currie, Domenico Bonaccini, Emiliano Diolaiti, Sebastien Tordo, Katrin Naesgarde, Johan Liwing, Orazio Bendinelli, Gianluigi Parmeggiani, Laird Close

Proceedings Volume 4007, (2000) https://doi.org/10.1117/12.390375

KEYWORDS: Adaptive optics, Stars, Point spread functions, Photometry, Deconvolution, Telescopes, Calibration, Algorithm development, Lanthanum, Imaging systems

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Proceedings Article | 7 July 2000 Paper

StarFinder: an IDL GUI-based code to analyze crowded fields with isoplanatic correcting PSF fitting

Emiliano Diolaiti, Orazio Bendinelli, Domenico Bonaccini, Laird Close, Douglas Currie, Gianluigi Parmeggiani

Proceedings Volume 4007, (2000) https://doi.org/10.1117/12.390377

KEYWORDS: Point spread functions, Stars, Adaptive optics, Deconvolution, Statistical analysis, Photometry, Superposition, Convolution, Human-machine interfaces, Signal to noise ratio

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Proceedings Article | 19 July 1999 Paper

Performance comparison of visual, infrared, and ultraviolet sensors for landing aircraft in fog

Victor Norris, Robert Evans, Douglas Currie

Proceedings Volume 3691, (1999) https://doi.org/10.1117/12.354430

KEYWORDS: Sensors, Fourier transforms, Signal detection, Ultraviolet radiation, Visualization, Fiber optic gyroscopes, Eye, Visibility, Enhanced vision, Light

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The aviation industry has long sought a means of conducting all weather operations. Presently, airport lighting systems provide the only means for aiding the pilot's transition from instrument to visual acquisition of the runway environment prior to landing the aircraft. The ability for a pilot to see through fog (cloud ceiling and visibility) define the limitations for conducting operations in instrument meteorological conditions. CAT I approaches are authorized down to a runway visual range (RVR) of 2,400 feet, while CAT IIIa approaches are authorized to an RVR of 700 ft. Enhanced vision technologies are being investigated to improve the ability of the pilot to acquire the visual cues (predominantly airport lighting systems) to the runway environment. If enhanced vision enabled the pilot to see 3.5 times farther than the unaided eye, CAT I operations could be conducted under CAT IIIa conditions. This paper examines the relative theoretical and experimental performance of several enhanced vision technologies. This performance analysis compares the runway light detection capability of various infrared sensors with the eye during the dynamics of an aircraft approach and landing. This analysis further compares the IR performance with FogEye, a UV sensor, and a Laser Visual Approach system. The analysis indicates that although the 1.5 micron and 3 to 5 micron IR sensors are capable of improving on the unaided eye, especially in haze and low density fog conditions, only the UV sensor, coupled with relatively minor changes to airport light lenses (to not attenuate UV light), provides the potential to aid the pilot in seeing airport lighting 3.5 times farther than the unaided eye. An 8 to 11 micron IR sensor can support enhanced vision of the actual airport surface. These electro optical capabilities are further compared with the capabilities of Millimeter Wave (MMW) systems. Additional collateral features that would aid in more orderly and safer landing operations are also described.

Proceedings Article | 11 September 1998 Paper

Modeling observed errors in adaptive optics systems

Douglas Currie, Petras Avizonis, Kenneth Kissell, Domenico Bonaccini

Proceedings Volume 3353, (1998) https://doi.org/10.1117/12.321651

KEYWORDS: Actuators, Point spread functions, Systems modeling, Adaptive optics, Stars, Wavefronts, Data modeling, Diffraction, Telescopes, Imaging systems

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