Frequency standards for VLBI, present and futureDuring the last several years, J.P.L. has evaluated a number of different types of frequency standards. These evaluations include measurement of environmetal susceptibilities (barometric pressure, humidity, temperature and magnetic field) and evaluation of stability. Data from these tests are presented for quartz oscillators, rubidium vapor standards, cesium beam standards, hydrogen masers (active and passive) and a superconducting cavity stabilized oscillator. Data on reliability and mechanical ruggedness based on actual field use is also presented. A survey of new frequency standards, their likely performance and environmental characteristics is presented.
Document ID
19840032556
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Sydnor, R. L. (California Institute of Technology, Jet Propulsion Laboratory, Pasadena CA, United States)