FIELD: hydroacoustics.
SUBSTANCE: invention relates to hydroacoustics and can be used to construct systems for automatic detection of echo signals received by a sonar on background noise and reverberation and measurement of object parameters when using pseudonoise signals in conditions of application of deliberate interference. Sonar method of detecting an object and measuring its parameters comprises emitting a sounding complex signal, generating M-reference signals in a processing band from Fmax up to Fmin, central frequency of which is shifted by frequency relative to each other by value K, receiving an echo signal, determining M correlation functions between an echo signal and each of the M-reference signals, measuring the amplitude of the correlation functions, selecting a correlation function with a maximum amplitude, determining a time position of the maximum of the correlation function to determine the distance to the object, determining a reference signal number for determining the speed of the object, displaying the result on the display, temporarily realizing the emitted signal is changed at each new sending, for which on each new transmission, measuring the time interference of the input interference, determining its spectrum in the signal band from Fmax up to Fmin, determining the time function of the selected spectrum, determining the time position of the maximum of the correlation function to determine the distance, determining the reference signal number for determining the speed Vcan, determining radial velocity Vrad object by value of distance variation during time between two subsequent emissions of different pseudonoise signals, comparing radial velocities measured from distance and reference channel number of reference frequency, decision is made on identification of object at equality of measured speeds Vcan=Vrad, and providing the identification result to the display system together with the measured parameters.
EFFECT: disclosed is a sonar method of detecting an object and measuring its parameters.
3 cl, 1 dwg
