Opbouw en Werking van een Multifunctie CO2-Laserradarsysteem (Construction and Function of a Multifunction CO2-Laser System)
Abstract
A description is given of a multifunction laser system designed for applications such as range- and velocity measurements, vibration detection and active imaging. The system is based on a wave guide CO2 laser operating in a continuous mode. The received radiation is detected by an optical heterodyne detection technique. Examples of the results of range-, velocity- and vibration measurements with the laser system are shown and discussed. The laser beam is modulated with an Mullard 100A acousto-optical modulation in a frequency band of 90-110 MHz. The properties of this modulator has been determined. A digital integrator, designed and built for periodic and synchronous signals is described. It is designed to integrate a large number of periods and is capable of sampling at a frequency of 42 MHz, with digital conversion to 8 bit. The increase of the Signal to Noise Ratio with the number of integrations is described. The specially designed electronic transmitter/receiver unit of the system and a waveform recorder, including control software, is briefly discussed.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1991
- Accession Number
- ADA245425
Entities
People
- P. H. Bentvelsen
- R. J. Lerou
Organizations
- Netherlands Organisation for Applied Scientific Research