ОПТИМИЗАЦИЯ ДЛИНЫ БУКСИРОВОЧНОГО ТРОСА ПРИ ОПЕРАТИВНОМ МАГНИТОМЕТРИЧЕСКОМ ПОИСКЕ ПОДВОДНЫХ ОБЪЕКТОВ

Abstract

One of the features of the creation of a new generation of marine magnetometry means is the requirement to increase the efficiency of the search for emergency underwater objects due to a reasonable reduction in the length of the magnetometer towing cable, which ensures a decrease in the length of the search tack. Traditionally, the length of the cablerope of a towed magnetometer is determined taking into account its sensitivity, as well as the magnetic characteristics of the vessel-tug and underwater object. At the same time, the stochastic nature of the search process is ignored, caused by random factors (the uncertain spatial position of the underwater object in the search strip, as well as the orientation noise of the measuring platform). A new approach to the algorithm for processing the statistical information of the magnetometric signals of the underwater object and the towing vehicle in the search bar makes it possible to determine the optimal length of the towing cable. In this case, the problem of minimizing the objective function of the dependence of two alternatives is solved: on the one hand, a decrease in the towing noise as the tow cable length increases, on the other, an increase in the orientation noise caused by the spatio-temporal oscillations of the magnetometer. In addition, the evaluation of the selection of the signal of the underwater object against the background of the towing vehicle interference in terms of the "statistical discrepancy of alternative hypotheses" – the Kullback divergence, makes it possible to optimize the length of the cable-rope with the given probabilistic values of the detection of the underwater object.