NOAA Mark VII acoustic echo sounder
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NOAA Mark VII acoustic echo sounder

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    The NOAA Mark VII portable Acoustic Echo Sounder which consists of a central unit, power amplifier, facsimile recorder, and 4-ft parabolic reflector antenna and which is used to monitor atmospheric temperature structure (inversions and convective plumes) to a height of 1360 m, by measuring backscattered echoes from acoustic tone bursts, is described. The theory and operation of the system are covered in detail. Complete instructions for initial setup, adjustment and calibration, startup, shutdown, and maintenance are given. Appendices include wiring diagrams, design and operation of electronics subsystems, modifications to system, parts lists, and schematic diagrams of circuits.
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