A new approach to data management and its impact on frequency control requirementsA new approach to data management consisting of spacecraft and data/information autonomy and its impact on frequency control requirements is presented. An autonomous spacecraft is capable of functioning without external intervention for up to 72 hr by enabling the sensors to make observations, maintaining its health and safety, and by using logical safety modes when anomalies occur. Data/information are made autonomous by associating all relevant ancillary data such as time, position, attitude, and sensor identification with the data/information record of an event onboard the spacecraft. This record is so constructed that the record of the event can be physically identified in a complete and self-contained record that is independent of all other data. All data within a packet will be time tagged to the needed accuracy, and the time markings from packet to packet will be coherent to a UTC time scale.
Document ID
19800056236
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Blanchard, D. L. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Fuchs, A. J. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Chi, A. R. (NASA Goddard Space Flight Center Greenbelt, Md., United States)
Date Acquired
August 10, 2013
Publication Date
January 1, 1979
Subject Category
Space Communications, Spacecraft Communications, Command And Tracking