| 针对周期偏移声信标的二阶高精度水声定位模型 |
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| 引用本文： | 孙思博,明瑞和,杨卓,梁国龙,付进.针对周期偏移声信标的二阶高精度水声定位模型[J].声学学报,2023,48(1):41-49. |
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| 作者姓名： | 孙思博 明瑞和 杨卓 梁国龙 付进 |
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| 作者单位： | 1 哈尔滨工程大学, 水声技术重点实验室 哈尔滨 150001; |
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| 基金项目： | 自然资源部海洋环境探测技术与应用重点实验室开放基金项目(MESTA-2021-A001)、水声对抗技术重点实验室基金项目(JCKY2022207CH09)和声纳技术重点实验室开放基金项目(6142109KF212203)资助 |
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| 摘 要： | 针对传统长基线水声定位模型在以飞机黑匣子等周期偏移声信标为目标时定位精度显著下降的问题,提出了一种不依赖于信号周期信息的新型长基线定位模型。该模型将传统时延差定位模型拓展至二阶,通过求取到达时间的二阶导数,消去未知声信标周期。为避免由阶数提高引起的解算非收敛问题,引入了改进牛顿迭代算法,有效提高了新模型的收敛概率。所提出新模型的仿真试验及湖上试验的定位误差分别为3.14 m和1.19 m,试验结果表明,该模型实现了周期偏移声信标的高精度定位解算。
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| 关 键 词： | 长基线定位 二阶时延差定位模型 声信标 周期声源 |
| 收稿时间： | 2021-10-13 |
The second order model for underwater acoustic location of periodic sources |
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| Affiliation: | 1 Acoustic Science and Technology Laboratory, Harbin Engineering University Harbin 150001;2 Key Laboratory of Marine Information Acquisition and Security Harbin Engineering University Ministry of Industry and Information Technology Harbin 150001;3 College of Underwater Acoustic Engineering, Harbin Engineering University Harbin 150001;4 China Ship Development and Design Center Wuhan 430064 |
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| Abstract: | Aiming at the problem that the positioning accuracy of the traditional long baseline underwater acoustic positioning model decreases significantly when taking the aircraft black box and other periodic drift acoustic beacon as the target, a new long baseline positioning model independent of the signal periodic information is proposed. The model extends the traditional delay difference location model to the second order, and eliminates the unknown acoustic beacon period by calculating the second derivative of arrival time. In order to avoid the non-convergence problem caused by the increase of order, an improved Newton iterative algorithm is introduced to effectively improve the convergence probability of the new model. The positioning errors of the simulation experiment and lake test experiment of the new model are 3.14m and 1.19m respectively. The experimental results show that the model realizes the high-precision positioning solution of periodic drift acoustic beacon. |
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