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Ka-band monopulse antenna-pointing systems analysis and simulation
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Lo, V. Y. |
| Copyright Year | 1996 |
| Description | NASA 's Deep Space Network (DSN) has been using both 70-m and 34-m reflector antennas to communicate with spacecraft at S-band (2.3 GHz) and X-band (8.45 GHz). To improve the quality of telecommunication and to meet future mission requirements, JPL has been developing 34-m Ka-band (32-GHz) beam waveguide antennas. Presently, antenna pointing operates in either the open-loop mode with blind pointing using navigation predicts or the closed-loop mode with conical scan (conscan). Pointing accuracy under normal conscan operating conditions is in the neighborhood of 5 mdeg. This is acceptable at S- and X-bands, but not enough at Ka-band. Due to the narrow beamwidth at Ka-band, it is important to improve pointing accuracy significantly (approximately 2 mdeg). Monopulse antenna tracking is one scheme being developed to meet the stringent pointing-accuracy requirement at Ka-band. Other advantages of monopulse tracking include low sensitivity to signal amplitude fluctuations as well as single-pulse processing for acquisition and tracking. This article presents system modeling, signal processing, simulation, and implementation of Ka-band monopulse tracking feed for antennas in NASA/DSN ground stations. |
| File Size | 416605 |
| Page Count | 9 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19960022225 |
| Archival Resource Key | ark:/13960/t8wb03t2g |
| Language | English |
| Publisher Date | 1996-02-15 |
| Access Restriction | Open |
| Subject Keyword | Communications And Radar Extremely High Frequencies Deep Space Network Ultrahigh Frequencies Spacecraft Communication Superhigh Frequencies Signal Processing Antenna Feeds Reflector Antennas Conical Scanning Beams Radiation Ground Stations Antenna Radiation Patterns Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
