FIGURE 4 REPRESENTATIVE PHOTOGRAPH OF A MECHANICALLY SCANNED SONIC BEAM (Bell System Technical Journal, 1951.) 51 J CONCLUSIONS It is expected that a number of conclusions can be provided regarding the applicability of the sonic simulation technique to the future development of the SPS power transmission system. If conclusions are favorable, we would expect that the sonic simulator will provide a low cost alternative to many of the time consuming orbiting satellite experiments that would otherwise be necessary. REFERENCES 1. W. E. Kock and F. K. Harvey, "A Photographic Method for Displaying Sound Waves and Microwave Space Patterns," Bell System Technical Journal, Vol. 30, July 1951, pp. 564-587. 2. J. H. Ott and J. S. Rice: "Digital SPS Phase Control Using Traveling Wave Interferometry" Novar Electronics Corporation Technical Report, October, 1978.
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