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Navigation of the space vlbi mission-halca
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | You, Tung Han Ellis, Jordan Mottinger, Neil |
| Copyright Year | 1998 |
| Description | In February 1997, the Japanese Space Agency ISAS launched the first space VLBI satellite, HALCA, with an 8 meter diameter wire mesh antenna and radio astronomy receivers capable of observing at 1.6, 4.8, and 22 Ghz. In a 560 by 21000 km orbit with a 6 hour period and 31 degree inclination, it observes celestial radio sources in conjunction with a world wide network of ground radio telescopes as part of an international collaborative effort which includes facilities in Japan, the U.S., Canada, Australia, and Europe. JPL is providing tracking and navigation support using a dedicated subnet of 11 meter antennas as well as co-observations using the DSN 70 meter antennas. This paper describes the spacecraft dynamics model and orbit determination strategies developed to meet the stringent trajectory accuracy requirements for generating predictions for the transfer of a stable uplink frequency to the spacecraft and for determining reconstructed orbits for delivery to the NRAO VLBI correlator and the international VLBI science community. |
| File Size | 1009332 |
| Page Count | 16 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19980201703 |
| Archival Resource Key | ark:/13960/t4xh4jb02 |
| Language | English |
| Publisher Date | 1998-05-01 |
| Access Restriction | Open |
| Subject Keyword | Space Communications, Spacecraft Communications, Command And Tracking Very Long Base Interferometry Receivers Orbit Calculation Satellite Observation Orbital Position Estimation Spacecraft Models Accuracy Radio Astronomy Space Missions Antenna Design Drag Radio Telescopes Space Technology Experiments Spacecraft Structures Frequency Stability Space Navigation Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
