Point-ahead limitation on reciprocity tracking*
Abstract
The average power received at a spacecraft from a reciprocity-tracking transmitter is shown to be the free-space diffraction-limited result times a gain-reduction factor that is due to the point-ahead requirement. For a constant-power transmitter, the gain-reduction factor is approximately equal to the appropriate spherical-wave mutual-coherence function. For a constant-average-power transmitter, an exact expression is obtained for the gain-reduction factor.
- Publication:
-
Journal of the Optical Society of America (1917-1983)
- Pub Date:
- January 1975
- DOI:
- 10.1364/JOSA.65.000065
- Bibcode:
- 1975JOSA...65...65S
- Keywords:
-
- Atmospheric Optics;
- Optical Communication;
- Power Transmission;
- Satellite Tracking;
- Turbulence Effects;
- Atmospheric Effects;
- Ground-Air-Ground Communication;
- Huygens Principle;
- Laser Outputs;
- Power Gain;
- Signal Transmission;
- Synchronous Satellites;
- Wave Propagation;
- Space Communications, Spacecraft Communications, Command and Tracking