BERMUDA ADJUSTMENT AND RADAR CALIBRATION PROJECTS (AF65 - RAD 1-4) (AF67 - 12 ESD).
AERONAUTICAL CHART AND INFORMATION CENTER ST LOUIS MO
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The addition of the chopping shutter has greatly expanded the Air Force geodetic capability through observation of passive satellites. The Mod III, Rapidyne, external chopping shutter and the GDI-5 internal equipment both became operational early in 1966. Four Mod IIIs and PC-1000 cameras were deployed in October to sites along the United States Coast and Geodetic Survey USC and GS Precise Traverse on the East Coast and at Grand Forks, N.D. and Bermuda to collect data for two radar calibration projects and triangulation adjustments. One other PC-1000, with a GDI-5 internal shutter was located at Bedford, Mass. principally for radar calibration. Simultaneous observations were fabricated through precise timing records. The reduced data reached an internal consistency of 11,000,000 and datum shifts derived for the Bermuda local datum differed by only 20 feet from shifts determined by the USC and GS with BC-4 data. In addition to the accuracies achieved, more data can be obtained in the same period of time observing passive satellites. Other projects are in work and planned for further use of the Mod III optical system. Author