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Record Details

Record 54 of 49244
VLBI collimation tower technique for time-delay studies of a large ground station communications antenna
Author and Affiliation:
Otoshi, T. Y.(Jet Propulsion Lab., California Inst. of Tech., Pasadena, CA, United States)
Young, L. E.(Jet Propulsion Lab., California Inst. of Tech., Pasadena, CA, United States)
Rusch, W. V. T.(Univ. of Southern California)
Abstract: A need for an accurate but inexpensive method for measuring and evaluating time delays of large ground antennas for VLBI applications motivated the development of the collimation tower technique. Supporting analytical work which was performed primarily to verify time delay measurement results obtained for a large antenna when the transmitter was at a collimation distance of 1/25 of the usual far field criterion is discussed. Comparisons of theoretical and experimental results are also given.
Publication Date: Feb 15, 1983
Document ID:
19830011497
(Acquired Nov 13, 1995)
Accession Number: 83N19768
Subject Category: COMMUNICATIONS AND RADAR
Document Type: Journal Article
Publication Information: The Telecommun. and Data Acquisition Rept.; p 20-29
Publisher Information: United States
Financial Sponsor: NASA; United States
Organization Source: Jet Propulsion Lab., California Inst. of Tech.; Radio Frequency and Microwave Subsystems Section.; Pasadena, CA, United States
Description: 10p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: No Copyright
NASA Terms: COLLIMATION; MICROWAVE ANTENNAS; TIME LAG; VERY LONG BASE INTERFEROMETRY; DEEP SPACE NETWORK; FAR FIELDS; GROUND STATIONS
Imprint And Other Notes: In its The Telecommun. and Data Acquisition Rept. p 20-29 (SEE N83-19766 10-12)
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