Tactical Rubidium Frequency Standard (TRFS).
Final technical rept. Oct 83-Jul 86,
LITTON SYSTEMS INC WOODLAND HILLS CA GUIDANCE AND CONTROL SYSTEMS DIV
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The primary objective of this contract was to design, develop, fabricate, test and evaluate pre-production models PPM of a Tactical Rubidium Frequency Standard TRFS that will meet the tactical temperature - vibration environment specifications. Innovative design has resulted in TRFS that meets the environmental requirements as well as small size, rapid warm-up, and low power consumption. To meet the vibration specification under wide temperature variations, an SC-cut voltage-controlled crystal oscillator VCXO having a minimum acceleration sensitivity of 4 x 10th minus 10th powerg was mounted on an internal wire-suspended vibration isolator. The VCXO output frequency of 10 MHz is tightly controlled by a servo loop with a 100 Hz bandwidth. The rubidium resonnance signal is detected by a phase-sensitive technique using sinusoidal modulation. Five multilayer PC boards are used along with discrete components. The TRFS will mount directly onto a platform without external vibration isolators. Keywords TRFSTactical Rubidium Frequency Standard, Physics package, Wire-suspended isolator, VCXO, Servo loop, and Sinusoidal modulation.
- Test Facilities, Equipment and Methods
- Atomic and Molecular Physics and Spectroscopy