Operational Test of 70 Mm. Format High Altitude Photography for Mapping PDF Download

Author: Richard F. Gettys
Publisher:
ISBN:
Category : Space photography
Languages : en
Pages : 42

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Book Description
The results of limited operational tests to determine the potential of high altitude 70 mm. format aerial photography for mapping are presented. The evaluated system consisted of 11/2-in. focal length LA-26 and X70-2 cameras for basic vertical coverage, 3-1in. focal length LA-27 cameras for split vertical supplemental coverage, the X-PAX-1 multiplex reduction printer, and a wide-angle multiplex plotter. An F8U-1P aircraft was used, flying at an altitude of 42,000 ft. above sea leval. A topographic map was compiled by multiplex from two stereo models which partially covered the test area. The horizontal and vertical positions of 94 geodetic control points, and the elevations of 26 additional bench marks were also recorded on the compilation manuscript. The values established by multiplex were compared with the corresponding values as listed by the Army Map Service. A 75-mile multiplex cantilever control extension consisting of 15 stereo models was performed. Horizontal adjustment was made by electronic computer; and vertical adjustment by graphical techniques. The adjusted valves were compared with the scale horizontal coordinates and elevations obtained directly or interpolated from AMS 1:25,000 scale maps. (Author).