METHOD OF DETERMINATION OF PRESENT POSITION DATA IN THE BISTATIC MODE OF HYDROSPACE DETECTION Russian patent published in 2018 - IPC G01S15/87 

FIELD: acoustics.

SUBSTANCE: invention relates to the field of hydroacoustics and can be used to provide detection and assessment of the present position data of marine objects in given regions of the world ocean. To this end, in the method for determining the present position data in the bistatic mode of hydrospace detection, which includes the emission of the sonar signal by the radiator, detection of the reflected signal from the target by a directed receiver from the radiator, determining the distance to the target and determining the speed and course of the target using the Doppler effect, determine with the moving radiator of the sonar signal and the detection of the reflected signal from the target by the moving receiver in the form of a flexible extended trailing antenna (FETA), at the FETA course, which does not coincide with the direction of the base between the spaced radiator and FETA, the direct and mirror bearings and the forward and mirror distances, determine the speed and course of the target in addition using the developed estimates of bearing and distance to the target, determine the discrepancy between the speed and course estimates obtained by both methods for direct and mirror bearings and distances, for bearing and distance, for which a minimum discrepancy between the estimates obtained is obtained, not exceeding the threshold value, make a decision that the goal is true, and if the estimates do not coincide, the goal is considered false, the estimates of the speed and course of the true goal are refined taking into account the non-uniformity of measurements by the two methods.

EFFECT: technical result of using the invention is: determining of the true coordinates of the target detected by the flexible extended trailing antenna (FETA), removing of the ambiguity of the side of the target and reducing of the errors in estimating the speed and course of the target.

1 cl, 3 dwg