AREA PRECIPITATION MEASURING INDICATOR
ARMY ELECTRONICS COMMAND FORT MONMOUTH NJ
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This is a detailed discussion of the design, development, and construction, and an evaluation of an experimental model of the Area Precipitation Measuring Indicator APMI. This system was designed to accept video signals reflected from weather clouds through the use of Radar Sets AN MPS-34 or ANCPS-9 to quantize these signals into three measurements intensity, range extent, and azimuthal extent and to print these measurement data in alpha-numerical form on a direct-view storage tube. The APMI equipment operates in one of two basic modes PPI and OFF CENTER. In the OFF CENTER mode, expansion of a target is permitted and a blown-up area is printed on the display. A general description of the overall operation and capability is presented, followed by a detailed description of the theory of operation of the system. Finally, results of the electrical test performed, future system consideration, and conclusions are presented.