Range Atmospheric visibility Monitoring (RAVM)

Period of Performance: 05/15/1998 - 02/15/1999

$99.9K

Phase 1 SBIR

Recipient Firm

Ophir Corp.
10184 West Belleview Avenue Suite 200
Littleton, CO 80127
Principal Investigator

Research Topics

Abstract

To fully characterize the "visibility" along a slant range, the atmosphere must be To fully characterize the "visibility" along a slant range, the atmosphere must be characterized for extinction factors leading to reduced contrast, as well as turbulence effects which reduce the image resolution of targets. The proposed system is a Rayleigh/Mie lidar (laser radar) system which measures molecular and aerosol backscattering to map out the range-resolved atmospheric extinction coefficient. The visual range and maximum image resolution are then calculated from these results. The system employes a narrow line width, frequency agile Cr:LiSAF/Raman-shifted laser transmitter capable of multiwavelength operations at all typical sensor wavelength (for example, visible, 850nm, 1.6um, and the 2-5um range). The detection system will use a novelfiltering scheme for separating the Rayleigh and Mie return signals. Future addons will make the lidar fully scanning to deliver 2-D or 3-D visibility information throughout the entire airspace.