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Title: Range imaging laser radar

Abstract

A laser source is operated continuously and modulated periodically (typicy 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.

Inventors:
 [1]
  1. Albuquerque, NM
Issue Date:
Research Org.:
AT&T
OSTI Identifier:
867431
Patent Number(s):
4935616
Assignee:
United States of America as represented by Department of Energy (Washington, DC)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01S - RADIO DIRECTION-FINDING
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01J - ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
DOE Contract Number:  
AC04-76DP00789
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
range; imaging; laser; radar; source; operated; continuously; modulated; periodically; typicy; sinusoidally; receiver; imposes; periodic; modulation; received; optical; signal; detected; array; detectors; integrating; type; target; determined; measuring; phase; shift; intensity; beam; relative; reference; comprises; photoemitter; converting; reflected; return; accordingly; electron; stream; local; demodulation; subsequently; converted; photon; detector; charge; coupled; device; ccd; averages; samples; provide; electrical; accordance; electron stream; modulation signal; beam relative; charge coupled; modulated signal; coupled device; optical beam; phase shift; electrical signal; laser source; optical signal; signal source; subsequently converted; laser radar; modulated electron; range imaging; return beam; /250/356/

Citation Formats

Scott, Marion W. Range imaging laser radar. United States: N. p., 1990. Web.
Scott, Marion W. Range imaging laser radar. United States.
Scott, Marion W. Mon . "Range imaging laser radar". United States. https://www.osti.gov/servlets/purl/867431.
@article{osti_867431,
title = {Range imaging laser radar},
author = {Scott, Marion W},
abstractNote = {A laser source is operated continuously and modulated periodically (typicy 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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1990},
month = {1}
}