Laser Imaging Radar System
Abstract
The simplicity, compactness, and reasonable cost of direct detection diode-laser range finders provide incentive for their use in laser imaging radar systems (LIRS). Efforts have been made to increase range performance of a diode- laser range finder by means of narrow bandwidth operation. This involved narrowing the line width of the diode laser via a narrow bandwidth filter in an external cavity so that it was compatible with a 5 A receiver filter. The narrow bandwidth of the receiver filter limited the amount of solar background radiation incident upon the receiver, thereby increasing the signal-to-noise ratio and thus maximizing the range capability. The study comprised the development and testing of a line-narrowed single-element diode-laser range finder, an analysis of multi-element diode-laser ranger finder, an analysis of multi-element diode-laser geometries, and an experimental evaluation of diode- laser collimation by means of a cylindrical microlens.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1993
- Accession Number
- ADA270436
Entities
People
- Robert A. Olson
- Steven P. Yun