Research and Development of Instrumentation Program, Evaluation of a General Purpose Muzzle Velocity Doppler Processor, the DBA Systems, inc. INVITE 512.
Final rept. 20 Jul 77-27 Sep 79,
ABERDEEN PROVING GROUND MD MATERIEL TESTING DIRECTORATE
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The test item is a commercially manufactured microprocessor-based general-purpose doppler processor for muzzle-velocity measurement. This project was to determine the suitability of the test item for proving-ground instrumentation. The evaluation was conducted at Aberdeen Proving Ground from 29 July 1977 through 27 September 1979. Field and laboratory tests were conducted. It is concluded that 1 the second-order least squares fit used by the INVITE does not provide the accuracy and precision required for a proving-ground applications, 2 INVITE raw data processed separately using a first-order least squares fit does provide the accuracy and precision required for proving ground applications better than 0.1, 3 the doppler quality-check circuitry of the INVITE does not function properly, and 4 as presently programmed, the flexibility of the INVITE is inadequate. It is recommended that 1 the test item be used for data acquisition only not processing, 2 all processing be done with a first-order fit, and 3 no additional systems be purchased. Author
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