海洋声道 sound channel in the ocean(0) underwater channel(4)   underwater channel      Application of beam,displacement ray,mode theory in two-axis underwater channel      波束位移射线简正波理论在双轴海洋声道中的应用 短句来源      In this paper, the generalized phase-integral (WKBZ) normal mode approach is extended and applied to dealing with the sound propagation in two-axis underwater channel.      本文对广义相积分简正波方法（WKBZ）进行了推广，使之适于处理双轴海洋声道中声传播问题。 短句来源      Because of the coupling between surface channel and SOFAR channel, sound propagation in two,axis underwater channel is complex and calculation of acoustic fields is difficult.      由于表面声道与深海声道间的耦合效应,声波在双轴海洋声道中的传播比较复杂,因此求解双轴海洋声道中的声场就比较困难。 短句来源      In this paper, beam,displacement ray,mode (BDRM) theory is applied to the calculation of the acoustic fields of two,axis underwater channel. Numerical simulations show that application of the BDRM theory is effective.      文章将浅海声传播的波束位移射线简正波(BDRM)理论应用于计算双轴海洋声道中的声场,进行了数值模拟并与传统简正波方法进行比较,结果表明应用BDRM理论计算的传播损失具有很高的精度和速度,可以对双轴海洋声道内声传播问题进行分析和预报。 短句来源   “海洋声道”译为未确定词的双语例句      WKBZ mode approach to sound propagation in horizontally stratified oceans      水平不变海洋声道中的WKBZ简正波方法 短句来源      The WKBZ mode approach to sound propagation in two-axis underwater channel      广义相积分简正波理论在双轴海洋声道中的推广与应用 短句来源      Parallel programme of WKBZ mode approach to sound propagation in horizontally stratified oceans      水平不变海洋声道中WKBZ简正波方法的并行算法 短句来源      When using long-range sound travel-time measurements to monitor the ocean temperature changes due to the global warming, tidal effects must be corrected from the data.      通过长期监测声波在海洋声道中远距离传播的时间，以对全球海水平均温度的变化进行观测时，对于潮汐的影响必须加以修正。 短句来源   相似匹配句对      Marine Electromagnetic Approach      海洋电磁法 短句来源      BLUE OCEAN      蓝色的海洋 短句来源      WKBZ mode approach to sound propagation in horizontally stratified oceans      水平不变海洋声道中的WKBZ简正波方法 短句来源      Parallel programme of WKBZ mode approach to sound propagation in horizontally stratified oceans      水平不变海洋声道中WKBZ简正波方法的并行算法 短句来源 查询“海洋声道”译词为用户自定义的双语例句     我想查看译文中含有：的双语例句 为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法，我们为您准备了出自英文原文的大量英语例句，供您参考。   underwater channel However, in this case, due to the rapid time-variability of the underwater channel, and the influence of inter-symbol interference (ISI) and inter-channel interference (ICI), the conventional rake receiver may fail to function. 例句来源       Sound propagation in two-axis underwater channel based on beam-displacement ray-mode theory 例句来源       Sound propagation in a deep ocean two-axis underwater channel is often complex and difficult to simulate between surface channel and sound fixing and ranging (SOFAR) channel. 例句来源       An improved method for computing the upper boundary reflection coefficient in the BDRM is proposed and applied to calculate the acoustic fields of a two-axis underwater channel. 例句来源       Transmission losses in the two-axis underwater channel are calculated in the new BDRM. 例句来源       更多                    The WKBZ approximation with the surface phase-shift correction, which hasadvantages of concise form and easy calculation,is used to compute mode eigenfunctions. Onthe basis of the WKBZ eigenfunction,a mode approach is proposed. This approach has beenapplied to sound propagation in the North Pacific,and a great number of numerical examplesare given. The results show that the WKBZ mode approach is a fast and accurate numericalmethod to calculate the acoustic field of convergence zones in stratified ocean chan...             本文利用本征函数的ＷＫＢＺ近似和海面相移修正发展了一种新的计算海洋声场的数值方法，该方法具有形式简明、易于计算、精度满足实用要求的优点．本文给出了ＷＫＢＺ方法应用于北太平洋声道中声传播的一些数值结果，这些结果表明该方法是一种计算分层海洋声道会聚区声场的快速而精确的数值方法． 文摘来源          When using long-range sound travel-time measurements to monitor the ocean temperature changes due to the global warming, tidal effects must be corrected from the data. This paper presents the computer simulation of tidal signal prediction for the ATOC project. On the basis of a linear model of the tidal signal, and using measurements taken within a specified sampling Period and at 4 hour intervals, a pseudo-inverse method is used to predict the travel-time changes attributed to the aggregate effect of barot...             通过长期监测声波在海洋声道中远距离传播的时间，以对全球海水平均温度的变化进行观测时，对于潮汐的影响必须加以修正。本文讨论ＡＴＯＣ项目中潮汐信号预报的计算机模拟。基于潮汐信号的线性模型，根据在一段预定时间内每隔４小时测量一次所得到的数据，利用伪逆矩阵法可对潮汐所引起的传播时间变化进行预报。传播时间的这种变化是正压潮在整个声波传播路径上所产生的总效果。为了得到所要求的预报精度，必须能估计出包括长周期分潮在内的所有分潮，并分辨一些频率非常接近的谐波分潮。为此采样期不应短于１８个月。在建立潮汐模型时，分潮频率是唯一需要用到的参数。由于所有天文分潮的频率都能十分精确地知道，而非天文成分对声波传播的影响很小，因此在线性模型中包括尽可能多的分潮即可有效地减小预报误差。量化是预报误差的主要来源之一。通过对多径信号的平均能有效地减小量化误差。 文摘来源          Abstract: Two-axis underwater channel often exists in deep ocean. Sound propagation in two-axis channel is a benchmark problem for computational methods of underwater acoustics, and some computational methods are ill-posed. In this paper, the generalized phase-integral (WKBZ) normal mode approach is extended and applied to dealing with the sound propagation in two-axis underwater channel.Calculations show that the extended WKBZ approach is effective.             双轴声道常出现于大洋中。双轴声道传播是一检验海洋声学计算方法的"标准"波动问题，某些算法在遇到这一问题时是不适定的。本文对广义相积分简正波方法（WKBZ）进行了推广，使之适于处理双轴海洋声道中声传播问题。数值计算结果表明本文所作的推广是有效的。 文摘来源   << 更多相关文摘         相关查询: 声道 海洋 海洋气团 海洋气候学 海洋气溶胶 海洋声学 海洋藻类 海洋鸟 磁声道 笑声声道 海洋球菌 海洋生的  对查询结果不满意

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