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Measuring Frequency Instability Of A Large Antenna (1994)

Otoshi, Tom Y. ; Franco, Manuel M. ; Lutes, George F.

In: Other Sources

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Publication Date: 2019-07-13

Description: Frequency instability of antenna under test determined from measurement of phase deviation between outputs of two antennas. Fiber-optic system used to minimize spurious component of frequency instability contributed by propagation of signal from reference antenna to Allan-variance-measuring instrument. Intended primarily to reveal contributions of wind and air-temperature effects on antenna and beam-waveguide structures to overall frequency instabilities of received signals. Technique simpler, less expensive, potentially capable of providing instability data in shorter measuring times, and more precise.

Keywords: ELECTRONIC SYSTEMS

Type: NPO-18991 , NASA Tech Briefs (ISSN 0145-319X); 18; 2; P. 46

Format: text

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