The fractional frequency stability of a 34-m diameter beam-waveguide antenna.

Details The fractional frequency stability of a 34-m diameter beam-waveguide antenna. The fractional frequency stability of a 34-m diameter beam-waveguide antenna.

May 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994ieeep..82..788o&link_type=abstract

Proc. IEEE, Vol. 82, No. 5, p. 788 - 795

Physics

1

Antennas: Accuracies

Scientific paper

Recent advances in fiber-optic technology have made it possible to develop a new technique to isolate and measure the frequency stability of a large beam-waveguide (BWG) antenna. Through the use of the technique described in this paper, at both 46.5° and 37° elevation angles, under good weather conditions, the degradation of the fractional frequency stability of signals passing through the antenna path was measured to be between 1.3 and 2.2×10-15 for sampling intervals of 1024 s. These stability values apply to the portion of the antenna that includes the main reflector, subreflector, tripod legs, and six BWG mirrors.

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