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Dsn 70-meter antenna x- and s-band calibration. part 2: system noise temperature measurements and telecommunications link evaluation
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Slobin, S. D. Richter, P. H. |
| Copyright Year | 1989 |
| Description | The X- and S-band system operating noise temperatures of the Deep Space Network (DSN) 70-m antennas are presented. Models of atmosphere and ground noise temperature contributions, as they affect the antenna calibrations, are given for future use in telecommunications link modeling. The measured 70-m antenna network gain/system noise temperature (G/T) performance is presented. Compared with the earlier 64-m antenna network, G/T improvements of from 1.8 dB to 2.5 dB, depending on elevation angle, were achieved. G/T comparisons are made with the DSN/Flight Project Design Handbook and the Voyager telecommunications design control table. Actual Voyager telecommunications link performance is compared with predictions made by TPAP (the Voyager telecommunications prediction and analysis program) and with measured performance of the individual 70-m antennas. A modification in the use of antenna gain, system noise temperature, and atmospheric attenuation in existing telecommunications design control tables is suggested. |
| File Size | 843729 |
| Page Count | 15 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19890018534 |
| Archival Resource Key | ark:/13960/t6zw6bv54 |
| Language | English |
| Publisher Date | 1989-05-15 |
| Access Restriction | Open |
| Subject Keyword | Communications And Radar Amplification Deep Space Network Improvement Ultrahigh Frequencies Calibrating Spacecraft Communication Voyager Project Predictions Superhigh Frequencies Atmospheric Attenuation Noise Temperature Antennas Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
