Time Maintenance of User Clocks via the Tracking and Data Relay Satellite System
Abstract
During the 1980's, all NASA-supported low earth orbital spacecraft will be supported by the Tracking Data and Relay Satellite System (TDRSS), User spacecraft will have the capability of time-tagging science and house-keeping data on board the spacecraft. This activity requires that the on-board time scale be relatable to a standard time scale such as Universal Time Coordinated (UTC). A system is described which uses the TDRSS itself to compare the user satellite clock with a clock at the White Sands station that is referenced to UTC. No command of the spacecraft by the system is required, and actual on-board clock corrections are made by the spacecraft control center at its discretion.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1982
- Accession Number
- ADA497651
Entities
People
- Gary Whitworth
- J. W. Mcintyre
- R. E. Downs
Organizations
- Johns Hopkins University