Design and Ground Test of the NTS-1 Frequency Standard System.
Abstract
The NRL TIMATION III satellite, redesignated as GPS Navigation Technology Satellite I (NTS-1) was successfully placed into a medium altitude orbit, 7,300 mi, on July 14, 1974. One of the major experiments performed with the satellite is the investigation of the space-environment performance of two rubidium controlled frequency standards and a specially developed quartz oscillator. System design, ground testing, and flight qualification modifications were performed at NRL. This included modifying commercial-quality rubidium standards to levels acceptable to the flight environment; the design and construction of power control, RF switching, and remote digital tuning circuits; and ground testing the candidate frequency standards in terms of short-term stability (Allen Variance), aging, warmup, tuning characteristics, DC power consumption and environmental effects due to vacuum, radiation, vibration, and temperature.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 05, 1975
- Accession Number
- ADA015084
Entities
People
- Frederick Danzy
- Joseph D. White
- Stephen A. Nichols
Organizations
- United States Naval Research Laboratory