Tactical Considerations of Atmospheric Effects on Laser Propagation.
Quarterly status rept. no. 3, 13 Jul-12 Oct 68,
STANFORD RESEARCH INST MENLO PARK CA
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This report describes the progress made during the third quarter of Phase III of a study of atmospheric effects on laser propagation, in connection with the operation of certain tactical weapon systems. The SRI Mark VI lidar system, which consists of a neodymium laser transmitter and two independent receivers, was used to measure backscattered laser energy and monitor the laser emission. Errors associated with measurement of atmospheric transmission by a single-ended transmitter-receiver aligned on a cooperative target were experimentally investigated. Results indicate that experimental errors are within estimated values except for uncertainties caused by turbulent intensity fluctuations introduced within the target-reflected energy, which is at least twice that estimated. It is suggested that the two independent 15-cm aperture receivers each separated an equal distance from the laser transmitter be used to investigate these turbulence effects. A second-harmonic generator and an appropriate receiver were added to the Mark VI lidar, which makes it possible to transmit and receive 1.06-micrometers and 0.53-micrometers energy simultaneously. Initial calibration and crosstalk checking was completed. Author
- Atmospheric Physics
- Lasers and Masers
- Infrared Detection and Detectors