Accession Number : ADA319225

Title :   'CREOL Support to ISTEF IV - Coherent Laser Radar'.

Descriptive Note : Final rept. Jul 92-Jan 96,

Corporate Author : UNIVERSITY OF CENTRAL FLORIDA ORLANDO

Personal Author(s) : Stickley, C. M. ; Weeks, A. R. ; Gatt, P. ; Harvey, J. ; Myler, H.

PDF Url : ADA319225

Report Date : DEC 1996

Pagination or Media Count : 369

Abstract : This report summarizes achievement in the following areas: We designed, built, and successfully tested in the field (at BMDO's ISTEF) a coherent laser receiver which demonstrated a M-fold CNR gain and 1/M reduction in signal fading probability, where M is the number of independent apertures/coherent detectors. We produced a design for such a receiver having eight apertures/detectors. We developed software, including a graphical user interface, for simulation of lidar in x, y, and t; the software is available from Dr. A. Weeks. We compared coherent CO2 and YAG lidars against the same rotating target; the major difference was the presence of glints with the CO2 system which tended to overshadow rotation rate information. An eye-safe Doppler lidar was built for vibration sensing. A technique for tracking thru turbulence was developed in which the resolution is not affected by the turbulence. Two image reconstruction algorithms were developed which, relative to other algorithms, avoid stagnation, improve global convergence, and dramatically reduce computational complexity. The effects of reciprocal path scattering on coherent lidars from turbulence and target roughness is assessed.

Descriptors :   *LASERS, *COHERENT RADAR, COMPUTER PROGRAMS, ALGORITHMS, OPTICAL RADAR, YTTRIUM ALUMINUM GARNET, SIMULATION, SCATTERING, VIBRATION, COMPUTATIONS, DETECTION, DETECTORS, INTERFACES, DOPPLER RADAR, PATHS, RATES, TRACKING, TURBULENCE, TARGETS, RECEIVERS, SAFETY, CONVERGENCE, GRAPHICS, USER NEEDS, ROTATION, ROUGHNESS, APERTURES, GLINT.

Subject Categories : Lasers and Masers
      Active & Passive Radar Detection & Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE