METHOD OF DETECTING, CLASSIFYING AND DETERMINING COORDINATES AND MOTION PARAMETERS OF MARINE NOISY TARGET Russian patent published in 2019 - IPC G01S3/80 

FIELD: physics.

SUBSTANCE: invention relates to the field of hydroacoustics, namely to passive noise-seeking stations intended for search and detection of noisy marine objects (targets). Said technical result is achieved by the fact that all tasks that make up target detection are solved jointly on the same time cycle. For this purpose, from the moment of the new signal trajectory establishment, statistical check of not two hypotheses ("target" - "interference"), and M + 1 hypotheses (M - number of classes in the specified alphabet of target classes), Ie hypotheses of belonging of a trajectory to each of M classes of a given alphabet of target classes, as well as to a class of "interference" are checked. Hypotheses are tested cyclically when any new information arrives at the input of the algorithm and consists in calculating probabilities of trajectory belonging to each of the classes of the given alphabet (hereinafter - probability of the target class) and comparing the calculated probabilities with a given threshold value (hereinafter - threshold value). To calculate probabilities of target class, automatic adaptive algorithms are used, taking into account current hydroacoustic and noise-signal conditions, as well as mutual statistical dependence of used signal parameters (classification features). If at least one of the calculated probabilities exceeds a threshold value, a decision is made in favour of the corresponding hypothesis and as coordinates and parameters of the target movement, those are determined, which are determined for this class.

EFFECT: technical result is faster detection and classification of targets.

1 cl, 4 dwg