Unwrapped-phase distribution model for speckle and turbulence
Abstract
A model for the unwrapped phase of a speckel field that propagates through clear air turbulence is proposed, and a formulation for the probability density function of the unwrapped phase is developed. A method is given to obtain the parameters of the unwrapped density function from parameters of the diffuse target, the laser source, and the atmosphere. Unwrapped-phase measurements at an atmospheric test site with a CO2 laser show agreement with the model.
- Publication:
-
Applied Optics
- Pub Date:
- June 1992
- DOI:
- 10.1364/AO.31.003481
- Bibcode:
- 1992ApOpt..31.3481D
- Keywords:
-
- Clear Air Turbulence;
- Normal Density Functions;
- Phase Shift;
- Probability Density Functions;
- Speckle Patterns;
- Turbulence Effects;
- Laser Beams;
- Phase Detectors;
- Lasers and Masers;
- ATMOSPHERIC OPTICS;
- TURBULENCE;
- SPECKLE PHENOMENA;
- PHASE