Underwater target localization using long baseline positioning system

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• 作者：Jucheng Zhang ^{Zhangjucheng2006@126.com" class="auth_mail" title="E-mail the corresponding author} ; Yunfeng Han ^{hanyunfeng@hrbeu.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Cuie Zheng ; ^{zhengcuie@hrbeu.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Dajun Sun¹ ; ^{sundajun@hrbeu.edu.cn" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Target localization ; Underwater acoustic positioning systems ; LBL
• 刊名：Applied Acoustics
• 出版年：2016
• 出版时间：October 2016
• 年：2016
• 卷：111
• 期：Complete
• 页码：129-134
• 全文大小：1073 K

文摘

The absolute position of an underwater target is difficult to pinpoint because the global positioning system (GPS) cannot penetrate water bodies. The long baseline (LBL) positioning system can extend GPS using high-precision calibrated underwater beacons as references. While traditional LBL systems give the target position without considering calibration error of deployed beacons. To solve this problem, we propose a method different from previous works, that combining the errors of observations together. We use GPS outputs as true values to evaluate the localization performance. An LBL system with four beacons was installed in deep sea to test the results. The positioning accuracy in deep sea improves nearly 5 m. The results suggest that beacon positioning errors have a great impact on localization precision, that is significant in high-precision positioning tasks.