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Record Details

Record 1 of 19980
Measuring Frequency Instability Of A Large Antenna
Author and Affiliation:
Otoshi, Tom Y.(Caltech)
Lutes, George F.(Caltech)
Franco, Manuel M.(Caltech)
Abstract: 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.
Publication Date: Feb 01, 1994
Document ID:
19940000052
(Acquired Dec 28, 1995)
Accession Number: 94B10052
Subject Category: ELECTRONIC SYSTEMS
Report/Patent Number: NPO-18991
Document Type: NASA Tech Brief
Publication Information: NASA Tech Briefs (ISSN 0145-319X); 18; 2; P. 46
Publisher Information: United States
Financial Sponsor: NASA; United States
Organization Source: Jet Propulsion Lab., California Inst. of Tech.; Pasadena, CA, United States
Description: In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: No Copyright
NASA Terms: ANTENNAS; FREQUENCY MEASUREMENT; RADIO ANTENNAS
Availability Source: National Technology Transfer Center (NTTC), Wheeling, WV
Availability Notes: Additional information available through: National Technology Transfer Center (NTTC), Wheeling, WV 26003, (Tel: 1-800-678-6882).
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