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Comparison of Active Sonar Target Positioning Performance and Optimal Sensor Arrangement  

박치현 (LG 이노텍)
홍우영 (해군사관학교)
고한석 (고려대학교 전자컴퓨터공학과)
김인익 (국방과학연구소)
Abstract
In this paper, efficient deployment method of sensors and target positioning performance with respect to measurement error are dealt with. Active sonar can be categorized into Monostatic, Bistatic, Multistatic sonar, and characteristics of respective sonar are different. Assuming that each sensor can receive range and angular information, we compare the performance of Monostatic, Bistatic, and Multistatic systems. And we suggest Weighted least square (WLS) which gives the weight to former case, LS. In particular. adopting suggested method we investigate the target positioning performance according to number of sensor, distance from transmitter to receiver, and propose efficient arrangement rule for Multistatic sonar configurations. According to the experimental results, RMSE of Multistatic sonar is found to be superior to Monostatic and Bistatic by 35.98%. 37.45% respectively, and WLS is superior to LS approximately by 7.4% in average. Furthermore, as the difference of respective sensor's variance is large, it is observed that the improvement ratio of target positioning performance is increased.
Keywords
Monostatic; Bistatic; Multistatic sonar; Range information; Angular information; Data fusion; Receiver net deployment; Least square; Weighted least square; RMSE average;
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