传统的匹配场被动定位方法往往采用垂直阵列对声场进行采样，这限制了匹配场被动定位技术的应用。该文提出一种基于单阵元阶梯变深的目标被动定位方法，为水声目标被动定位提出一种全新的思路。在稳定噪声信号的条件之下，从测量场估计方面入手，以单阵元放置于不同深度等效为一垂直阵列，从而获得不同深度目标的非时间同步声场数据，通过补偿数据的相位，进而对测量场进行估计，然后利用等效垂直阵列的测量场结合匹配场原理，给出目标的位置。仿真以及实测数据均表明，通过单阵元阶梯变深的方式可以实现目标的正确定位。
The traditional matching field passive locating methods often use vertical array to sample the sound field and this limits the application of matched field passive locating technology. In this paper, a passive locating method for target based on the change of single hydrophone vertical depth was given to put forward a new train of thought for the underwater acoustic target passive locating. Under the condition of stable noise signal, a single hydrophone placed in different depth is equivalent to a vertical array, so as to obtain the time unsynchronized sound field data of different depth. Measure field can be estimated after compensating the phase of the data. The location of the object can be obtained by using the measure field of the equivalent vertical array and matched field processing. The simulation and measured data indicate that correct localization of target can be achieved by changing the depth of single hydrophone.
2018,40(12): 119-123 收稿日期：2018-03-06
DOI：10.3404/j.issn.1672-7649.2018.12.024
分类号：TP393
作者简介：韩树平(1988-),男,教授,主要研究方向为声呐装备及军事应用
参考文献：
[1] 郑胜家, 韩东, 等. 匹配场定位强干扰抑制最小方差无畸变响应处理技术[J]. 仪器仪表学报, 2014, 35(7):1586-1593
[2] HINICH M J. Maximum likelihood signal processing for a vertical array[J]. Acoust. Soc. Am., 1973, 54:499-503
[3] URICK R J. Principles of Underwater Sound[M]. McGraw-Hill, 1983.
[4] 汪德昭, 尚尔昌. 水声学[M]. 北京:科学出版社, 2013.
[5] BOOTH N O, ABAWI A T. Detectability of low-level broad-bands signals using adaptive matched-field processing with vertical aperture array[R]. IEEE Journal of Oceanic Engineering, 2000, 25(3):296-312.
[6] 李风华, 刘建军, 张仁和. 水平阵匹配场定位技术研究[J]. 声学技术, 2004, 23(1):29-31
[7] CHAPMAN N R, YEREMY M L. Matched field source localization with a horizontal line array[J]. Journal of Computational Acoustics, 2011, 02(3):315-325
[8] 黄勇, 李宇. 被动合成孔径声呐阵列目标远程定位[J]. 电子与信息学报, 2006, 28(3):526-531
[9] 李楠松, 朴胜春. 单矢量水听器被动测距方法研究[J]. 仪器仪表学报, 2015, 36(10):2273-2282
[10] 路敬祎, 叶东, 等. 双五元十字阵被动声定位融合算法及性能分析[J]. 仪器仪表学报, 2016, 37(4):827-833
[11] PORTER M B. The KRAKEN normal mode program (draft)[M]. Washington D. C, Navel research Laboratory, 1992.
[12] 赵德鑫, 李婷, 等. 无人潜航器舷侧阵声呐匹配场被动定位方法研究[J]. 湖南大学学报, 2013, 40(8):76-77
[13] GINGRAS D F, GERSTOFT P. Inversion for geometric and geoacoustic parameters in shallow water:experimental results[J]. Acoust. Soc. Am., 1995, 97(6):3589-3598
[14] 赵航芳, 李建龙, 宫先仪. 不确实海洋中最小方差匹配场波束形成对环境参量失配的灵敏性分析[J]. 哈尔滨工程大学学报, 2011, 32(2):200-208
