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聚焦波束形成声图法误差分析
引用本文:翟春平,刘雨东. 聚焦波束形成声图法误差分析[J]. 声学技术, 2008, 27(1): 18-24
作者姓名:翟春平  刘雨东
作者单位:大连测控技术研究所大连67号信箱,大连116013
基金项目:致谢 感谢哈尔滨工程大学惠俊英教授对此文章多方面的帮助.
摘    要:聚集波束形成声图测量方法可以实现近场目标的被动定位.利用该方法接收数据或进行数据处理的过程中必定会有各种误差产生,本文从聚焦峰尺度、阵元偏差、波长等方面对聚焦波束形成声图测量方法的影响进行了分析,经仿真研究与实验数据分析可以得出聚焦波束形成声图法受距离与波长的影响较大,但对于阵元的位置要求不高,利用该方法可以实现近程目标的高精度定位。

关 键 词:声图  聚焦波束形成  被动定位  聚焦峰尺度
文章编号:1000-3630(2008)-01-0018-07
收稿时间:2007-05-29
修稿时间:2007-09-20

Error analysis of the underwater imaging method using focused beamforming
ZHAI Chun-ping and LIU Yu-dong. Error analysis of the underwater imaging method using focused beamforming[J]. Technical Acoustics, 2008, 27(1): 18-24
Authors:ZHAI Chun-ping and LIU Yu-dong
Affiliation:(Dalia Scientific Test&Control Technology Institute, PO Box67 Dalian, Dalian 116013, China)
Abstract:The method of measuring underwater image by focused beamforming can be used for passive localization in short range. It is sure that many kinds of errors exist in the process of receiving data or carrying out data processing with this method. From the analysis of focusing apex scale, the influences of array element deviation, distance and wavelength on the underwater imaging method using focused beamforming are discussed in this paper. Simulation study and experimental data analysis indicate that the locating precision of this imaging method is sensitive to distance and wavelength, but not so to the array element position. Therefore the focused beam-forming technique can realize high precision localization in short range.
Keywords:Underwater image   focused beamforming   passive localization   focusing apex scale
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