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Optical deep space communication via relay satellite
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Gagliardi, R. M. Dolinar Jr., S. J. Vilnrotter, V. A. |
| Copyright Year | 1981 |
| Description | The possible use of an optical for high rate data transmission from a deep space vehicle to an Earth-orbiting relay satellite while RF links are envisioned for the relay to Earth link was studied. A preliminary link analysis is presented for initial sizing of optical components and power levels, in terms of achievable data rates and feasible range distances. Modulation formats are restricted to pulsed laser operation, involving bot coded and uncoded schemes. The advantage of an optical link over present RF deep space link capabilities is shown. The problems of acquisition, pointing and tracking with narrow optical beams are presented and discussed. Mathematical models of beam trackers are derived, aiding in the design of such systems for minimizing beam pointing errors. The expected orbital geometry between spacecraft and relay satellite, and its impact on beam pointing dynamics are discussed. |
| File Size | 2793292 |
| Page Count | 69 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19810024823 |
| Archival Resource Key | ark:/13960/t9j43kj0z |
| Language | English |
| Publisher Date | 1981-08-15 |
| Access Restriction | Open |
| Subject Keyword | Communications And Radar Data Links Relay Satellites Satellite Antennas Optical Tracking Radio Relay Systems Deep Space Optical Communication Pulse Position Modulation Pulsed Lasers 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 |
