Tactical Considerations of Atmospheric Effects on Laser Propagation.
Abstract
The report describes the progress made during the second year (Phase II) of a study of atmospheric effects on laser propagation in connection with the operation of certain tactical weapon systems. Included are a detailed discussion of the fourth quarter's work and references to work previously reported in the three quarterly reports. A computer study was initiated in the fourth quarter to determine the optimum sensor depression angle and range to target as functions of the atmosphere in connection with an aircraft carrying a laser receiver. A small-volume false target (smoke, dust, etc.) was simulated and the receiver incident power levels from false and true targets as a function of the sensor depression angle and eight independent variables were calculated. Before the optimum values of depression angle and range can be determined, however, additional simulated runs are needed; these are planned during the early part of Phase III. An error analysis of the Mk VI lidar when used with the cooperative target array was completed and confirmed that lidar provides an accurate method of conducting transmission measurements. Also described is a method for injecting a calibration reference pulse into the PMT output log amplifier. (Modified author abstract)
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 29, 1968
- Accession Number
- AD0764144
Entities
People
- Edward E. Uthe
- Robert J. Allen
- William E. Evans
Organizations
- SRI International