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PERFORMANCE OF THE AN/GMD-2 RAWIN SET IN THE DENPRO SYSTEM
PACIFIC MISSILE RANGE POINT MUGU CA
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An analysis is performed of the velocity and altitude data derived from the ANGMD-2 rawin set track of four flights of the density probe DENPRO vehicle. Data from ANFPS-16 radars are available for two of the flights and are used as a basis for evaluating the ANGMD-2 data. Slant ranges and vehicle velocities derived from the ANGMD-2 compare favorably with those derived from the ANFPS-16 data. Vehicle altitudes derived from the ANGMD-2 are consistently lower than those derived from the ANFPS-16. This was due to AN GMD-2 rawin-determined evaluation angles being lower than ANFPS-16 radar- determined evaluation angles by varying amounts, though the reason for this has not yet been determined. It has been concluded 1 that the modified ANGMD-2 is capable of tracking a rocket probe, 2 that ANGMD-2 rawin-determined velocities may be expected to be within 1 per cent of ANFPS-16 radar-determined velocities, and 3 that ANGMD-2 rawin-determined altitudes are about 1 per cent lower than ANFPS-16 radar-determined altitudes, up to an altitude of 400, 000 feet. Author
APPROVED FOR PUBLIC RELEASE