Accession Number:

AD0631435

Title:

POWER SPECTRA AND STATISTICAL STUDIES OF OVERWATER SIGNAL STRENGTHS FOR THE GOLDEN GATE CALIFORNIA RADIO PATH,

Descriptive Note:

Corporate Author:

ELECTRICAL ENGINEERING RESEARCH LAB UNIV OF TEXAS AUSTIN

Report Date:

1954-07-31

Pagination or Media Count:

132.0

Abstract:

In the spring of 1953, the Electrical Engineering Research Laboratory made measurements of over-water radio propagation at 3.2 centimeter wavelength over the Golden Gate at San Francisco, California. The purpose of the measurement was to determine the characteristics of the signal reflected from the water surface. Measurements included 1 the total signal, 2 the signal with the direct component nulled out, and 3 the signal with a broad null on the specular reflection. These were all measured for one way transmission for simultaneous reception at two receiving antennas separated vertically 50 and 100 wavelengths. In addition, a wave gage recorded the water waves. Analysis of this data has included 1 determining the amplitude distributions, 2 the cross correlation functions, 3 the auto correlation functions, 4 the power spectra. The resulting data is compared to the results expected from the sea reflection model suggested by the Applied Physics Laboratory and at least qualitative agreement is found. Measurement techniques were not sufficiently developed to allow complete quantitative comparison. Suggestions are made for a measurement program to give data which will be a more complete test of the sea reflection model. Author

Subject Categories:

  • Radiofrequency Wave Propagation

Distribution Statement:

APPROVED FOR PUBLIC RELEASE