Study of a laser anemometer
Abstract
After a discussion of the principles of laser anemometry, the theory of heterodyne detection is explored. The principal parameters determining the value of the signal-to-noise ratio are examined, and the choice of anemometer components is considered. The nonlinear evolution of the photocurrent spectrum and the treatment of the signal are described. Testing of a prototype is reported; the infrared laser anemometer is able to detect aerosols at a distance of 500 meters and measure their speeds for speeds up to 38 km/hr.
- Publication:
-
Ph.D. Thesis
- Pub Date:
- July 1976
- Bibcode:
- 1976PhDT........57L
- Keywords:
-
- Laser Anemometers;
- Remote Sensors;
- Wind Velocity Measurement;
- Aerosols;
- Anemometers;
- Doppler Effect;
- Emission Spectra;
- Frequency Response;
- Infrared Lasers;
- Optical Heterodyning;
- Performance Tests;
- Prototypes;
- Signal Processing;
- Signal To Noise Ratios;
- Spectrum Analysis;
- Thermal Radiation;
- Instrumentation and Photography