Horizontal-longitudinal Correlations of Sound Field at Large Depth in the Direct Zone of Deep Water

doi:10.3969/j.issn.1000-1093.2021.04.015

Abstract

Abstract: The horizontal-longitudinal correlations of sound field at large depth in the direct zone of deep water have important reference significance for the design of horizontal array and the signal processing of array. The characteristics of deep water sound transmission loss and horizontal-longitudinal correlations are analyzed based on a deep water incomplete channel sound transmission experiment in the South China Sea in the winter of 2016. The horizontal-longitudinal correlations in deep water of the direct zone are analyzed through theory and simulation. The results show that the horizontal and longitudinal correlation radii of sound field at large depth are independent to the sound energy. The interference characteristics of sound field at large depth in deep water of the direct zone lead to the existence of oscillation structure of horizontal-longitudinal correlation coefficient. The horizontal-longitudinal correlation radius of sound field is consistent with the oscillation period of sound transmission losses. The longer the oscillation period is, the larger the horizontal-longitudinal correlation radius is. The horizontal-longitudinal correlation radius decreases with the increase in the frequency and depth of sound source in the direct zone. The horizontal-longitudinal correlation radius of sound field at the near distance from direct zone is less affected by the change of receiver depth, but it increases with the receiver depth at a far distance.

Key words: soundfieldatlargedepth, directzoneofdeepwater, horizontal-longitudinalcorrelation, oscillationstructure

CLC Number:

TB566

WANG Mengyuan, LI Zhenglin, QIN Jixing, WU Shuanglin, WANG Guangxu. Horizontal-longitudinal Correlations of Sound Field at Large Depth in the Direct Zone of Deep Water[J]. Acta Armamentarii, 2021, 42(4): 817-826.

References

［1］ WILLE P, THIELE R. Transverse horizontal coherence of explosive signals in shallow water[J].The Journal of the Acoustical Society of America, 1971, 50(1B):348-353.
[2］ CAREY W M. The determination of signal coherence length based on signal coherence and gain measurements in deep and shallow water[J]. The Journal of the Acoustical Society of America, 1998, 104(2):831-837.
[3］ GORODETSKAYA E Y, MALEKHANOV A I, SAZONTOV A G, et al. Deep-water acoustic coherence at long ranges: theoretical prediction and effects on large-array signal processing[J]. IEEE Journal of Oceanic Engineering, 1999, 24(2):156-171.
[4］ COLOSI J A, CHANDRAYADULA T K, VORONOVICH A G, et al. Coupled mode transport theory for sound transmission through an ocean with random sound speed perturbations: coherence in deep water environments[J].The Journal of the Acoustical Society of America, 2013, 134(4): 3119-3133.
[5］尚尔昌. 随机浅海信道中信号场横向相干理论[J]. 声学学报, 1979,4(1): 30-33.
SHANG E C. Theory of horizontal coherence of signal field in shallow-water[J]. Chinese Journal of Acoustics, 1979, 4(1): 30-33.(in Chinese)
[6］ WANG Q, ZHANG R H. Sound spatial correlations in shallow water[J]. The Journal of the Acoustical Society of America, 1992, 92(2):932-938.
[7］ ZHU R C, GUAN D. Spatial horizontal coherence of sound in shallow water[J]. The Journal of the Acoustical Society of America, 1992, 92(2): 956-961.
[8］李秀林, 倪明, 李整林, 等. 基于光纤水听器的声场水平相关性研究[J]. 应用声学, 2005, 24(1): 11-14.
LI X L, NI M, LI Z L, et al. Study of horizontal correlation based on fiber-optic hydrophone[J]. Applied Acoustics, 2005,24(1):11-14. (in Chinese)
[9］李秀林, 李整林, 李风华,等. 浅海水平纵向相关与海底参数反演[J].自然科学进展,2005, 15(1): 38-45.
LI X L, LI Z L, LI F H, et al. Horizontal-longitudinal correlation of shallow sea and inversion of seabed parameters[J]. Progress in Natural Science, 2005, 15(1): 38-45. (in Chinese)
[10］苏晓星, 张仁和, 李风华. 利用波导不变性提高声场的水平纵向相关[J].声学学报,2006,31(4): 305-309.
SU X X，ZHANG R H, LI F H. Improvement of the longitudinal correlations of acoustical field by using the waveguide invariance[J]. Chinese Journal of Acoustics, 2006,31(4):305-309. (in Chinese)
[11］ ZHANG R H, SU X X, LI F H. Improvement of low-frequency acoustic spatial correlation by frequency-shift compensation[J]. Chinese Physics Letters, 2006, 23(7):1838-1841.
[12］ LI J, LI Z L, REN Y. Spatial correlation of the high intensity zone in deep-water acoustic field[J]. Chinese Physics B, 2016, 25(12):73-80.
[13］ LI J, LI Z L, REN Y, et al. Horizontal-longitudinal correlations of acoustic field in deep water[J]. Chinese Physics Letters, 2015, 32(6):107-110.
[14］王域, 宫在晓, 林鹏. 深海声信道中的被动合成孔径[J]. 中国科学: 物理学力学天文学, 2016, 46(9):67-75.
WANG Y, GONG Z X, LIN P. Performance of PASA in ocean waveguides[J]. SCIENTIA SINICA Physica, Mechanica & Astronomica, 2016, 46(9):67-75. (in Chinese)
[15］ HU Z G, LI Z L, ZHANG R H, et al. The effects of the uneven bottom on horizontal longitudinal correlations of acoustic field in deep water[J]. Chinese Journal of Acoustics, 2018,37(3):310-324.
[16］ YANG K D, LI H, DUAN R. Horizontal-longitudinal spatial correlation of acoustic field with deep receiver in the direct zone in deep water[J]. Chinese Physics Letters,2017,34(2):53-57.
[17］ COLLINS M D. A split-step Padé solution for the parabolic equation method[J]. The Journal of the Acoustical Society of America, 1993, 93(93):1736-1742.
[18］ WU S L, LI Z L, QIN J X. Geoacoustic inversion for bottom parameters in the deep-water area of the South China Sea[J]. Chinese Physics Letters, 2015, 32(12):70-73.

[1]	LIU Jinwei, PENG Zilong, FAN Jun, LIU Yan, KONG Huimin. Research on the Acoustic Scattering Prediction Methodology of Underwater Vehicle Based on Sliced-parameterized Multi-highlights Model [J]. Acta Armamentarii, 0, (): 0-0.
[2]	XUE Cheng, GU Yiming, GONG Zaixiao, LI Zhenglin, . Application of parameterized time-frequency analysis in continuous-wave active detection [J]. Acta Armamentarii, 0, (): 0-0.
[3]	XUE Lingzhi, ZENG Xiangyang, YANG Shuang. Underwater Acoustic Target Recognition Algorithm Based on Generative Adversarial Networks [J]. Acta Armamentarii, 2021, 42(11): 2444-2452.
[4]	CHEN Xinhua, ZHENG Enming, LI Yi, YANG He, ZHOU Quanbin. A Near-field Acoustic Image Measurement Method Based on Compressed Sensing in Complex Domain [J]. Acta Armamentarii, 2021, 42(8): 1735-1743.
[5]	LUO Yi， WANG Jieya， XIE Taotao. A Foam Interlayer Method for Improving on the Acoustic Reflection Capability of Underwater Corner Reflector [J]. Acta Armamentarii, 2020, 41(10): 2081-2087.
[6]	SHAO Pengfei, WANG Lei, WANG Fangyong. Active Distributed Sonar Multi-target Tracking Based on SMC-PHD Filtering [J]. Acta Armamentarii, 2020, 41(5): 941-949.
[7]	LIN Wei, XIA Maolong, LIU Zhenghao, LI Sheng, MENG Chunxia. The Recovery of Underwater Target's Free Field Acoustic Radiation Characteristics and Identification of Far-field AcousticRadiation Hotspot [J]. Acta Armamentarii, 2020, 41(1): 119-126.
[8]	LIU Fuchen, JI Tuo, ZHANG Qiaoli. Sound Speed Profile Inversion Based on Mode Signal and Polynomial Fitting [J]. Acta Armamentarii, 2019, 40(11): 2283-2295.
[9]	LUO Yi， CHEN Xin. Acoustic Scattering Characteristics of Underwater Air-filled Cavity Corner Reflector [J]. Acta Armamentarii, 2019, 40(10): 2129-2135.
[10]	JIA Jidong, LI Shuqiu, GAO Shanguo. A Design of an Orthogonal Set of Transmitting Waveforms of MIMO Sonar Based on Costas Sequence [J]. Acta Armamentarii, 2019, 40(8): 1680-1687.
[11]	JU Yang， YUAN Yonghu， LIN Wei， XU Haisheng. Acoustic Information-based TMA Method for Uniformly Accelerating Motion of Target [J]. Acta Armamentarii, 2019, 40(8): 1688-1692.
[12]	XU Guojun, ZHANG Lin, HAN Mei, FAN Peiqin. Research on the Underwater Target Motion Analysis Based on Acoustic Field Interference Feature Match [J]. Acta Armamentarii, 2019, 40(5): 1038-1049.
[13]	MU Sen， LI Jinghua， ZHANG Heng， CHEN Guo. Research on Underwater Acoustic Detection Algorithm of Aerial Targets Based on Harmonic Set Detection [J]. Acta Armamentarii, 2019, 40(5): 1050-1057.
[14]	ZHENG Enming, CHEN Xinhua, LI Yi. Modified Time Domain Interference Blocking Method Based on Guiding Signal [J]. Acta Armamentarii, 2019, 40(3): 561-569.
[15]	YUE Lei. A Detection Method Based on Bipolar Pulse for Undersea and Buried Small Targets [J]. Acta Armamentarii, 2019, 40(1): 143-152.