| 相控阵多普勒计程仪的相控波束形成 |
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| 引用本文： | 刘国勤,彭东立.相控阵多普勒计程仪的相控波束形成[J].声学技术,2015,34(4):374-379. |
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| 作者姓名： | 刘国勤 彭东立 |
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| 作者单位： | 上海江南造船(集团)有限责任公司, 上海 201913;中国科学院声学研究所东海研究站, 上海 200032 |
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| 摘 要： | 多普勒计程仪采用相控阵进行声波信号的发射和接收,不仅能够大大缩小换能器的体积,提高计程仪的适装性,还能依托相控阵本身的物理特性,无需进行声速补偿,所以在低频段获得了较多的应用。首先介绍了一维线阵波束形成的基本原理,然后分析了一维线阵的波束形成,获取多普勒计程仪发射波束及接收波束的方法,最后利用自制平面相控阵的水池测试结果与理论计算进行对比,结果表明,自制的相控阵满足多普勒计程仪的使用需求,为宽带大深度多普勒计程仪的制作奠定了基础。
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| 关 键 词： | 多普勒计程仪 相控阵 波束形成 |
| 收稿时间： | 2014/10/15 0:00:00 |
| 修稿时间： | 2015/1/29 0:00:00 |
Beam-forming of phased-array Doppler velocity log |
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| LIU Guo-qin and PENG Dong-li.Beam-forming of phased-array Doppler velocity log[J].Technical Acoustics,2015,34(4):374-379. |
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| Authors: | LIU Guo-qin and PENG Dong-li |
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| Affiliation: | Shanghai Jiangnan Shipyard Group Co., Ltd, Shanghai 201913, China;Shanghai Acoustic Laboratory, Institute of Acoustics, Chinese Academy of Sciences, Shanghai 200032, China |
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| Abstract: | Doppler velocity log (DVL) uses phased-array for sound signal transmitting and receiving. The phased-array mode can largely reduce the volume of transducer and promote the adaptability of installation. According to the characteristic of phased-array, compensation of sound velocity for DVL is unneeded, and so the phased-array DVL is popular in low frequency range. In this paper, the basic beam-forming theory of one dimension linear array is introduced, and the transmitting beam and receiving beam of the phased-array DVL are described. The beam-forming method of the 38 kHz plane phased-array DVL developed by TRDI Company is analyzed. This work lays a foundation for developing a broadband long range phased-array Doppler velocity log. |
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| Keywords: | Doppler velocity log phased-array beam forming |
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