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http://dx.doi.org/10.23087/jkicsp.2021.22.4.010

A method for automatically adjusting threshold to improve the intercept pulse detection performance of submarine  

Kim, Do-Young (LIGNex1 Co.,Ltd)
Shin, Kee-Cheol (LIGNex1 Co.,Ltd)
Eom, Min-Jeong (LIGNex1 Co.,Ltd)
Kwon, Sung-Chur (LIGNex1 Co.,Ltd)
Publication Information
Journal of the Institute of Convergence Signal Processing / v.22, no.4, 2021 , pp. 213-219 More about this Journal
Abstract
The submarine's intercept pulse detection detects pulses radiated from enemy surface ships, submarines, and torpedoes, and performs an important function of providing maneuverability and survivability of submarine. Whether or not the intercept pulse is detected is determined by comparing the size of the received pulse with the threshold value by the operator. In the case of intercept pulses, the intensity of the pulses is frequently reduced under the influence of various environmental factors. In the situation, if detection is performed with a fixed threshold, a non-detection problem occurs and persists until the operator sets a low threshold. In this paper, we proposed method for automatically adjusting threshold to reduce the non-detection problem caused by a fixed threshold. Simulation were preformed on 4 cases with different pulse level fluctuation widths, and it was confirmed that the detection performance was improved by increasing the number of detections when a method for automatically adjusting threshold was applied to all cases. Through the proposed method, it is expected that the intercept pulse detection performance will be improved in the marine environment the large fluctuations in pulse level in the future.
Keywords
submarine; intercept pulse detection; fixed threshold; non-detection; automatically adjusting threshold;
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