| 郑琛瑶,潘泉,董真杰.利用相关峰内插时延估计提高四元阵定位精度[J].声学技术,2012,(5):526~529 |
| 利用相关峰内插时延估计提高四元阵定位精度 |
| Improvement of positioning precision of four-element-array by interpolating time-delay estimation in correlation peak |
| 投稿时间：2012-03-20 修订日期：2012-05-02 |
| DOI：10.3969/j.issn1000-3630.2012.05.016 |
| 中文关键词: 超短基线 四元阵 时延估计 定位精度 |
| 英文关键词: ultra-short baseline(USBL) four-element-array time-delay estimation positioning precision |
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| 中文摘要: |
| 超短基线定位系统具有基阵尺寸小、易于安装等优点,被广泛应用于海洋科学领域.但超短基线作用距离短,远距离定位精度不高.为了改善超短基线的定位精度,在四元阵被动定位结构基础上,采用相关峰内插时延估计算法进行超短基线定位.仿真结果表明该算法能够较好地估计时延差值,有效改进定位精度. |
| 英文摘要: |
| Ultra-short baseline system (USBL) is widely used in ocean observation because of its small aperture size and easily being installed. However, the USBL has lower accuracy in long-range operation. In order to increase the accuracy, the algorithm of interpolating time-delay estimation in correlation peak is used for passive positioning four-element-array. The simulation results show that this algorithm can estimate the differential time-delay exactly, the positioning precision is enhanced. |
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