Accession Number : ADD011769

Title :   Multiple Site Laser Excited Pollution Monitoring System.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s) : Gelbwachs,J A

Report Date : 14 May 1985

Pagination or Media Count : 6

Abstract : A multiple site laser excited pollution monitoring system having a single laser located at a central location capable of providing a laser output beam, deflected in timed sequence, in a plurality of distinct different directions. Transmitting means, preferably in the form of a plurality of optical fibers, transmit the laser output beam in timed sequence to a plurality of remotely located laser excited pollution detectors (photoacoustic detector heads). Signals from the pollution detectors are transmitted to a signal processor and display unit also located at the central location. As a consequence thereof, a single laser can provide power for a plurality of laser excited detectors at a multiplicity of remote sites and thereby greatly reduce the expense involved in detecting the presence of pollutants at each of the plurality remote locations. (Author)

Descriptors :   *PATENTS, *REMOTE DETECTORS, *TOXIC AGENTS, *LASER BEAMS, *POLLUTION, EXCITATION, MONITORS, PRESSURE, TRANSDUCERS, FIBER OPTICS, SIGNAL PROCESSING, DISPLAY SYSTEMS, COSTS, DETECTORS, ENVIRONMENTAL MANAGEMENT

Subject Categories : Lasers and Masers
      Civil Engineering
      Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE