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http://dx.doi.org/10.7776/ASK.2019.38.6.630

Position error estimation of sub-array in passive ranging sonar based on a genetic algorithm  

Eom, Min-Jeong (LIG넥스원(주)해양1연구소)
Kim, Do-Young (LIG넥스원(주)해양1연구소)
Park, Gyu-Tae (LIG넥스원(주)해양1연구소)
Shin, Kee-Cheol (LIG넥스원(주)해양1연구소)
Oh, Se-Hyun (해군정보단)
Publication Information
The Journal of the Acoustical Society of Korea / v.38, no.6, 2019 , pp. 630-636 More about this Journal
Abstract
Passive Ranging Sonar (PRS) is a type of passive sonar consisting of three sub-array on the port and starboard, and has a characteristic of detecting a target and calculating a bearing and a distance. The bearing and distance calculation requires physical sub-array position information, and the bearing and distance accuracy performance are deteriorated when the position information of the sub-array is inaccurate. In particular, it has a greater impact on distance accuracy performance using plus value of two time-delay than a bearing using average value of two time-delay. In order to improve this, a study on sub-array position error estimation and error compensation is needed. In this paper, We estimate the sub-array position error based on enetic algorithm, an optimization search technique, and propose a method to improve the performance of distance accuracy by compensating the time delay error caused by the position error. In addition, we will verify the proposed algorithm and its performance using the sea-going data.
Keywords
Passive ranging sonar; Genetic algorithm; Position error estimation; Range correction table;
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