Computer Science – Performance
Scientific paper
Jun 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981tdar.nasa..203w&link_type=abstract
In its The Telecommun. and Data Acquisition Rept. p 203-218 (SEE N81-27123 18-12)
Computer Science
Performance
Frequency Standards, Frequency Synchronization, Hydrogen Masers, Interplanetary Navigation, Syntony, Thermal Stability, Accuracy, Atomic Clocks, Deep Space Network, Performance Tests, Spacecraft Tracking, Transient Oscillations
Scientific paper
Spacecraft navigation to the outer planets (Jupiter and beyond) places very stringent demands upon the performance of frequency and time (F&T) reference standards. The Deep Space Network (DSN) makes use of hydrogen masers as an aid in meeting the routine F&T operational requirements within the 64 m antenna network. Results as of October 1980 indicate the hydrogen masers are performing within the required specifications. Two problem areas are discussed: insufficient control over the environment in which the reference standards reside; and frequency drift.
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