Demodulation techniques for the amplitude modulated laser imager
Applied Optics, Vol. 46, Issue 30, pp. 7374-7383 (2007)
http://dx.doi.org/10.1364/AO.46.007374
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Abstract
A new technique has been found that uses in-phase and quadrature phase (I∕Q) demodulation to optimize the images produced with an amplitude-modulated laser imaging system. An I∕Q demodulator was used to collect the I∕Q components of the received modulation envelope. It was discovered that by adjusting the local oscillator phase and the modulation frequency, the backscatter and target signals can be analyzed separately via the I∕Q components. This new approach enhances image contrast beyond what was achieved with a previous design thatprocessed only the composite magnitude information.
© 2007 Optical Society of America
OCIS Codes
(010.3310) Atmospheric and oceanic optics : Laser beam transmission
(010.3640) Atmospheric and oceanic optics : Lidar
(010.4450) Atmospheric and oceanic optics : Oceanic optics
(120.4820) Instrumentation, measurement, and metrology : Optical systems
(280.3420) Remote sensing and sensors : Laser sensors
(290.7050) Scattering : Turbid media
ToC Category:
Atmospheric and Oceanic Optics
History
Original Manuscript: July 12, 2007
Revised Manuscript: August 23, 2007
Manuscript Accepted: August 25, 2007
Published: October 10, 2007
Virtual Issues
Vol. 2, Iss. 11 Virtual Journal for Biomedical Optics
Citation
Linda Mullen, Alan Laux, Brandon Cochenour, Eleonora P. Zege, Iosif L. Katsev, and Alexander S. Prikhach, "Demodulation techniques for the amplitude modulated laser imager," Appl. Opt. 46, 7374-7383 (2007)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ao-46-30-7374
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