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基于TODA信息的多基地声呐系统定位算法
Research on localization algorithm of multistatic sonar system based on TDOA information
- DOI:
- 作者:
- 吴天舒, 苏军, 连梓旭
WU Tian-shu, SU Jun, LIAN Zi-xu
- 作者单位:
- 中国人民解放军91388部队，广东 湛江 524022
No. 91388 Unit of PLA, Zhanjiang 524022, China
- 关键词:
- 多基地声呐;定位误差;线性算法;TDOA
multistatic sonar; positioning error; linear algorithm; TDOA
- 摘要:
- 建立T-Rn型多基地声呐定位几何模型，在基于TDOA时间信息进行定位时，分析模型中存在的3种误差计算公式；根据模型分别推导出在未知误差和已知误差条件下的最优线性算法以及定位误差表达式。通过仿真分析模型中3种误差对线性算法的影响，仿真结果表明，观测时间误差对定位误差影响最大；分析模型中观测时间误差的不均匀度对3种算法的影响，其对最小二乘法的影响最大，同时两步最小二乘法随误差不均匀的增加而减少。研究成果可为T-Rn型多基地声呐系统的总体设计、站址配置和误差分析提供理论支撑，为T-Rn型多基地声呐系统基于方位角、时延等信息进行定位时提供分析思路，同时可为后续的Tn-Rn型多基地声呐系统研究奠定基础。
The positioning geometric model of T-Rn type multistatic sonar is established. When positioning based on TDOA time information, the calculation formulas of three kinds of errors in the model are analyzed; According to the model, the optimal linear algorithm and the positioning error expression under the conditions of unknown error and known error are derived respectively. The influence of three errors in the model on the linear algorithm is analyzed by simulation. The simulation results show that the observation time error has the greatest influence on the positioning error; The influence of the nonuniformity of the observation time error in the model on the three algorithms is analyzed. It has the greatest influence on the least square method, and the two-step least square method decreases with the increase of the nonuniformity of the error. The research can provide theoretical support for the overall design, station location configuration and error analysis of T-Rn type multistatic sonar system; It provides an analysis idea for T-Rn type multistatic sonar system to locate based on azimuth, time delay and other information; At the same time, it can lay a foundation for the subsequent research of Tn-Rn type multistatic sonar system.
2023,45(5): 112-117 收稿日期：2022-06-10
DOI：10.3404/j.issn.1672-7649.2023.05.021
分类号：TN929.3;
作者简介：吴天舒(1994-),男,硕士,助理工程师,研究方向为水声探测与通信,
