声速剖面未知条件下的平均声速计算方法
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摘要
针对Harmonic平均声速的计算方法必须依赖于实际声速剖面的问题,提出了一种基于等效声速剖面法,利用声波垂直发射到达海底的传播时间计算平均声速的方法,首先分析了声速空变性对平均声速计算的影响,其次介绍了新方法的推导过程,最后进行了两组仿真实验。实验结果表明,新方法计算的平均声速可以达到较高的精度且能够准确反映声速时变性的变化规律,对水下目标定位精度的提高具有重要应用价值。
Focused on the problem that the calculation of the average sound velocity of the Harmonic must depend on the actual velocity profile,a new method is put forward to calculate average sound velocity. The new method is based on equivalent sound ve-locity profile method and using the propagation time of transmission to the seafloor by the vertical launch of sound waves to calculatethe average sound velocity. Firstly,the influence of sound velocity variability on average velocity calculation is analyzed. Secondly,the derivation process of the new method is introduced. Simulation results show that the average sound velocity calculated by the newmethod can achieve high accuracy and can accurately reflect the change of sound velocity,which has important application value for improving the accuracy of underwater object.
Focused on the problem that the calculation of the average sound velocity of the Harmonic must depend on the actual velocity profile,a new method is put forward to calculate average sound velocity. The new method is based on equivalent sound ve-locity profile method and using the propagation time of transmission to the seafloor by the vertical launch of sound waves to calculatethe average sound velocity. Firstly,the influence of sound velocity variability on average velocity calculation is analyzed. Secondly,the derivation process of the new method is introduced. Simulation results show that the average sound velocity calculated by the newmethod can achieve high accuracy and can accurately reflect the change of sound velocity,which has important application value for improving the accuracy of underwater object.
引文
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[10]Fanlin Yang,Xiushan Lu,Jiabiao Li. Precise Position-ing of Underwater Static Objects without Sound SpeedProfile[J]. Marine Geodesy,2011(34):138-151.
[11]Gagnon K,Chadwell CD. Measuring The Onset of Lock-ing in the Peru-Chile Trench with GPS and AcousticMeasurements[J]. letter to nature,2005,434(10):205-208.
[12]Watanabe S,Tadashi Ishikawa,Yusuke Yokota. Non-vol-canic Crustal Movement of The Northernmost PhilippineSea Plate Detected by the GPS-acoustic Seafloor Posi-tioning[J]. Earth Planets and Space,2015,67(184):2-9.
[13]Kussat NH,Chadwell CD,Richard Zimmerman. AbsolutePositioning of an Autonomous Underwater Vehicle UsingGPS and Acoustic Measurements[J]. IEEE Journal ofOceanic Engineering,2005,30(1):153-164.
[14]Spiess,F N. Suboceanic Geodetic Measurements[C]//IEEE.Trans. Geosci. Remote Sensing GE 23_4.,1985:502-510.
[15]Spiess FN. Acoustic Techniques for Marine Geodesy[J].Marine Geodesy,1980(4):13-27.
[16] Spiess, F.N., Boegeman, D.E., Zimmerman, R.,Chadwell,C.D.,Hildebrand,J.A.. Precision Transpon-der. SIO Ref. 97-3[J].Univ. of Calif., San Diego,Scripps Institution of Oceanography,1997.
[17]Jianhu Zhao,Yajing Zou,Hongmei Zhang. A New Meth-od for Absolute Datum Transfer in Seafloor Control Net-work Measurement[J]. Mar Sci Technol,2016(21):216-226.
[18]G. H. Purcell Jr,L. E. Young,S. Kornreich Wolf,et al.Accurate GPS measurement of the location and orienta-tion of a floating platform[J]. Marine Geodesy,1990,14(3-4):255-264.
[19]Spiess F N,J A Hildebrand. Employing Geodesy to StudyTemporal Variability at a Mid-Ocean Ridge,EOS,1995(76):451-455.
[2]陆秀平,边少锋,黄谟涛,等.常梯度声线跟踪中平均声速的改进方法[J].武汉大学学报(信息科学版),2012,37(5):590-593.
[3]Takuji Yamada,Masataka Ando,Keiichi Tadakoro. Errorevaluation in acoustic positioning of a single transponderfor seafloor crustal deformation measurement[J]. EarthPlanets Space,2002,54:871-881.
[3]Geng X,Zielinski A. Precise Multibeam Acoustic Bathym-etry[J]. Marine Geodesy,1999,22(3):157-167.
[5]孙文舟,殷晓冬,李树军,等.用于AUV定位的等效声速剖面改进算法研究[J].海洋测绘,2017,37(3):40-44.
[6]Lurton X. An Introduction to Underwater Acoustics[J].Springer,London,2002.
[7]XU Peiliang,ANDO M,TADOKORO K. Preise,Three-di-mensional Seafloor Geodetic Deformation MeasurementsUsing Difference Techniques[J]. Earth plants Space,2005,57(9):795-808.
[8]Urick R J. Principles of underwater sound for engineers[M].New York:McGraw-Hill,1983.
[9]阳凡林,李家彪,吴自银,等.浅水多波束勘测数据精细处理方法[J].测绘学报,2008,37(4):444-450.
[10]Fanlin Yang,Xiushan Lu,Jiabiao Li. Precise Position-ing of Underwater Static Objects without Sound SpeedProfile[J]. Marine Geodesy,2011(34):138-151.
[11]Gagnon K,Chadwell CD. Measuring The Onset of Lock-ing in the Peru-Chile Trench with GPS and AcousticMeasurements[J]. letter to nature,2005,434(10):205-208.
[12]Watanabe S,Tadashi Ishikawa,Yusuke Yokota. Non-vol-canic Crustal Movement of The Northernmost PhilippineSea Plate Detected by the GPS-acoustic Seafloor Posi-tioning[J]. Earth Planets and Space,2015,67(184):2-9.
[13]Kussat NH,Chadwell CD,Richard Zimmerman. AbsolutePositioning of an Autonomous Underwater Vehicle UsingGPS and Acoustic Measurements[J]. IEEE Journal ofOceanic Engineering,2005,30(1):153-164.
[14]Spiess,F N. Suboceanic Geodetic Measurements[C]//IEEE.Trans. Geosci. Remote Sensing GE 23_4.,1985:502-510.
[15]Spiess FN. Acoustic Techniques for Marine Geodesy[J].Marine Geodesy,1980(4):13-27.
[16] Spiess, F.N., Boegeman, D.E., Zimmerman, R.,Chadwell,C.D.,Hildebrand,J.A.. Precision Transpon-der. SIO Ref. 97-3[J].Univ. of Calif., San Diego,Scripps Institution of Oceanography,1997.
[17]Jianhu Zhao,Yajing Zou,Hongmei Zhang. A New Meth-od for Absolute Datum Transfer in Seafloor Control Net-work Measurement[J]. Mar Sci Technol,2016(21):216-226.
[18]G. H. Purcell Jr,L. E. Young,S. Kornreich Wolf,et al.Accurate GPS measurement of the location and orienta-tion of a floating platform[J]. Marine Geodesy,1990,14(3-4):255-264.
[19]Spiess F N,J A Hildebrand. Employing Geodesy to StudyTemporal Variability at a Mid-Ocean Ridge,EOS,1995(76):451-455.