Citation
Abstract
The signal-to-noise ratio of video data received from the second Mariner 73Mercury encounter was improved by arraying two available 26-m antennas with the 64-m antenna normally used for reception. Specially designed digital equipment was used to combine the signals received by the three antennas. Analysis of this equipment shows that the received signals which arrived with relative time differences up to 50 ys were correctly aligned by the combining equipment to an accuracy within 50 ns. Observed error rates during the encounter track verified the system improvement to within 0.1 dB of the predicted 0.8 dB value.
Details
- Volume
- 42-26
- Published
- April 15, 1975
- Pages
- 102–118
- File Size
- 1.3 MB