Investigation on Velocity Measurement of Underwater High-speed Vehicle

The velocity and variation law of underwater high-speed vehicle are important mark measuring its hydrodynamic characteristics and ballistic characteristics, also important parameters investigating of supercavity formation and drag reduction characteristic. According to the problems of low measurement precision and poor reliability existing on the coil target measurement, laser screen target measurement and so on, comprehensive considering of such affecting factors in the movement of the supercavity vehicle as disturbances, rapid change of environment, wide dispersion and the sealing of the velocity measurement range, based on the fixed distance chronometry, the testing scheme was adopted about contact paired position tinfoil target and embedded microprocessor hardware system. The speed testing of underwater high-speed vehicle experiment was made, where the velocity parameter and variation law of underwater high-speed vehicle was obtained firstly in china, verifying that the designed measure system can make accurate measure on velocity, navigating trajectory and navigating attitude of underwater high-speed navigating vehicle and is suit for accommodating to the requests of field pool, providing a feasible testing method for the research on underwater high-speed navigating vehicle.