Up-link propagation and adaptive optics
Abstract
The considered investigation is concerned with an optical communications system involving a transmitter on the ground and a receiver or relay located in space. Atmospheric turbulence effects can be ameliorated by the use of adaptive optics considered by Hardy (1978). The investigation makes use of a Monte-Carlo simulation of propagation. Various levels of adaptive optics performance are simulated. The intent is to demonstrate the beam spread and level of fading for realistic ground-to-space scenarios. The simulations are compared with theory, but to date there is inadequate experimental work for a basis of comparison. The most important result obtained is that even for only a few modes corrected by the adaptive optics system, the level of fading and the Strehl ratio may be acceptable.
- Publication:
-
NTC 1980; National Telecommunications Conference, Volume 2
- Pub Date:
- 1980
- Bibcode:
- 1980ntc.....2...27G
- Keywords:
-
- Adaptive Optics;
- Atmospheric Effects;
- Optical Communication;
- Signal Fading;
- Turbulence Effects;
- Uplinking;
- Atmospheric Turbulence;
- Monte Carlo Method;
- Performance Prediction;
- Systems Simulation;
- Transmission Efficiency;
- Space Communications, Spacecraft Communications, Command and Tracking