| 超短基线系统定位精度改进方法 |
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| 引用本文： | 喻敏,惠俊英,冯海泓,张晓亮.超短基线系统定位精度改进方法[J].海洋工程,2006,24(1):86-91. |
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| 作者姓名： | 喻敏 惠俊英 冯海泓 张晓亮 |
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| 作者单位： | 哈尔滨工程大学,水声工程学院,黑龙江,哈尔滨,150001 |
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| 基金项目： | 国家十五“863”资助项目(2002AA613010) |
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| 摘 要： | 超短基线是一种常用的水声定位技术,与其它基线相比,超短基线定位系统基线基阵尺寸小,易于安装。由于在远距离误差发散快,超短基线作用距离不远,其远距离定位精度也不高。为了满足深海作业需要,提高超短基线远距离的定位精度,提出改进超短基线定位精度的两种方法,一种方法是通过改进基阵阵形,从而加大基阵孔径提高定位精度;另一种是通过使用宽带信号测向,采用相关峰内插时延估计的方法。经计算机仿真,通过两种方法改进后的超短基线系统定位精度都得到不同程度的提高。
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| 关 键 词： | 超短基线 定位精度 改进方法 水声定位 |
| 文章编号： | 1005-9865（2006）01-0086-06 |
| 收稿时间： | 2004-12-17 |
| 修稿时间： | 2004年12月17 |
Improved measurement methods for positioning precision of USBL |
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| YU Min,HUI Jun-ying,FENG Hai-hong,ZHANG Xiao-liang.Improved measurement methods for positioning precision of USBL[J].Ocean Engineering,2006,24(1):86-91. |
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| Authors: | YU Min HUI Jun-ying FENG Hai-hong ZHANG Xiao-liang |
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| Institution: | College of Underwater Acoustic Engineering, Harbin Engineering University, Harbin 150001, China |
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| Abstract: | Ultra-short baseline system(USBL) is a kind of acoustic positioning technology of great use.This technique is more convenient than other baseline in that its aperture size is small and it is easy to install.However,the USBL has lower accuracy in long-range operation.For increasing the accuracy in long-range operation and meeting the need of deep-water application,two improved measurement methods are presented.One is to increase the array's aperture,and the other is to use the wideband signal for position signal.The positioning algorithm is correlation peak interpolation time-delay estimation.The simulation results show the positioning precision of the improved USBL is increased by using these methods. |
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| Keywords: | USBL positioning precision improved method acoustic positioning technique |
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