PROBABILITY DISTRIBUTION OF ANTENNA GAIN FOR SATELLITE WITH SWITCHED ANTENNA SYSTEM
MASSACHUSETTS INST OF TECH LEXINGTON LINCOLN LAB
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For a communication system using satellites carrying antennas tied to a switching system, the probability distribution of angles between the pointing directions of the axis of the operating antenna and of a ground receiving station is found. This study is based on the condition that the antenna pointing most nearly in the direction of a sensing signal is switched on. In the determination of the characteristics of this system, geometries of pointing directions are found, which are optimum or near optimum, for the cases of 4, 6, 8, 12, 16, 24, 32, 48, and 60 antennas. Consideration is also given to determining an optimum antenna pattern to be used with any geometry. For any pattern, a conversion from probability distribution of angles to probability distribution of gains is straightforward. The results of this study are summarized in a chart.
- Unmanned Spacecraft