Range imaging laser radar
Abstract
A laser source is operated continuously and modulated periodically (typically sinusoidally). A receiver imposes another periodic modulation on the received optical signal, the modulated signal being detected by an array of detectors of the integrating type. Range to the target determined by measuring the phase shift of the intensity modulation on the received optical beam relative to a reference. The receiver comprises a photoemitter for converting the reflected, periodically modulated, return beam to an accordingly modulated electron stream. The electron stream is modulated by a local demodulation signal source and subsequently converted back to a photon stream by a detector. A charge coupled device (CCD) array then averages and samples the photon stream to provide an electrical signal in accordance with the photon stream. 2 figs.
- Inventors:
- Issue Date:
- OSTI Identifier:
- 7164557
- Patent Number(s):
- 4935616
- Application Number:
- PPN: US 7-392878
- Assignee:
- Dept. of Energy, Washington, DC (United States)
- DOE Contract Number:
- AC04-76DP00789
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 14 Aug 1989
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 47 OTHER INSTRUMENTATION; RADAR; DESIGN; CHARGE-COUPLED DEVICES; LASER RADIATION; MODULATION; RADIATION DETECTORS; VISIBLE RADIATION; ELECTROMAGNETIC RADIATION; MEASURING INSTRUMENTS; RADIATIONS; RANGE FINDERS; SEMICONDUCTOR DEVICES; 440800* - Miscellaneous Instrumentation- (1990-)
Citation Formats
Scott, M W. Range imaging laser radar. United States: N. p., 1990.
Web.
Scott, M W. Range imaging laser radar. United States.
Scott, M W. Tue .
"Range imaging laser radar". United States.
@article{osti_7164557,
title = {Range imaging laser radar},
author = {Scott, M W},
abstractNote = {A laser source is operated continuously and modulated periodically (typically sinusoidally). A receiver imposes another periodic modulation on the received optical signal, the modulated signal being detected by an array of detectors of the integrating type. Range to the target determined by measuring the phase shift of the intensity modulation on the received optical beam relative to a reference. The receiver comprises a photoemitter for converting the reflected, periodically modulated, return beam to an accordingly modulated electron stream. The electron stream is modulated by a local demodulation signal source and subsequently converted back to a photon stream by a detector. A charge coupled device (CCD) array then averages and samples the photon stream to provide an electrical signal in accordance with the photon stream. 2 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jun 19 00:00:00 EDT 1990},
month = {Tue Jun 19 00:00:00 EDT 1990}
}