Citation
Abstract
This article describes a detection model to identify the presence of Galileo optical communications from an Earth-based Transmitter (GOPEX) signal by processing multiple signal receptions extracted from the camera images. The model decomposes a multi-signal reception camera image into a set of images so that the location of the pixel being illuminated is known a priori and the laser can illuminate only one pixel at each reception instance. Numerical results show that if effects on the pointing error due to atmospheric refraction can be controlled to between 20-30 prad, the beam divergence of the GOPEX laser should be adjusted to be between 30-40 rad when the spacecraft is 30,000,000 km away from Earth. Furthermore, increasing beyond five the number of receptions for processing will not produce a significant detection probability advantage.
Details
- Volume
- 42-106
- Published
- August 15, 1991
- Pages
- 111–118
- File Size
- 312.8 KB