direct wave
英 [dəˈrekt weɪv]
美 [dəˈrekt weɪv]
直接波；直射波
双语例句
- This method is greatly increased in the high-intensity direct wave interference under active sonar echo extraction accuracy.
该方法极大地提高了在高强度直达波干扰下主动声呐提取目标回波的精度。 - After reviewing the echo structural characteristics of the underwater target, a method to accurately pick-up the direct wave separated from the surface-reflected wave is discussed.
本文在分析水中目标回声构成特点的基础上，探讨了一种滤除界面反射精确提取目标回波的方法。 - This paper discusses the electromagnetism properties of the near field chamber, with the relationship between reflected wave and direct wave analyzed.
讨论了近场暗室的电磁场特性，对暗室入射场、反射场的关系进行了分析，给出在工程中实用的近场暗室场特性的计算方法。 - Study of CT Detecting Concrete Lacunas of Surface Direct Wave
表层直达波CT探测混凝土空洞的试验研究 - PD ( partial discharge); periodic interference; direct wave trap filter;
局部放电；周期性干扰；直接陷波； - Application of SVD filtering in the processing of decaying direct wave and refracted wave
SVD滤波法在直达波和折射波衰减处理中的应用 - The direct wave suppression which is the bottleneck for target detection by non-cooperative illumination is introduced.
文中首先介绍了该体制雷达对目标进行有效探测的技术瓶颈&直达波干扰抑制； - The used seismic data are prestack data: therefore, this method considers the energies of direct wave, refraction wave and multiple wave.
因所用资料是叠前资料，所以该方法考虑了直达波、折射波和多次波能量。 - In addition, the removal of direct wave in shallow layer underground acoustic signal and PGPR echo is studied.
同时，从浅层地声直达波去除原理出发，本文对相控阵探地雷达回波中直达波的去除作了仔细的分析研究。 - Signal sampling and direct wave suppression of radar echo signal are researched in this paper.
本课题以雷达回波信号为对象，研究了其信号采集技术与直达波抑制方法。 - Tomographic inversion of first break using direct wave, diving wave, refraction wave and combination of the three has the advantage of having vertical and lateral variable velocity and is suitable for inversion in complex surface model that the velocity can vary arbitrarily.
它利用地震直达波、辶回折波、折射波以及三者组合的初至波和层析反演方法具有的纵、横向变速优势，实现适应速度任意变化的复杂表层模型反演。 - The wave pattern is character of reflection when the reflecting wave is transformed from the direct wave.
从直达波转换为反射波后，该波型具有反射波的性质。 - The2 D continue directional wavelet transform is successfully used to suppress the direct wave in GPR data.
基于二维有向连续小波良好的方向选择性，对于探地雷达信号中的直达波进行了去除。 - The electromagnetic fields of a dipole source over the ground plane can be expressed as the sum of three parts: the direct wave, image wave and the Sommerfeld type integrals.
地平面上方偶极源的电磁场可以分解成直达波场、镜像波场和Sommerfeld型积分三部分之和。 - The accurate formula of time-distance curve is used to develop theoretical common shotpoint gather, which includes direct wave, shallow refracted wave, reflected waves and refracted waves in layered medium.
文中按照精确的时距曲线公式建立了具有多个反射层的共炮点理论记录，包括直达波、浅层折射波，各层的反射波及折射波。 - Good-quality reconstructed images have been obtained by direct wave-front phase conjugation.
由直接位相复共轭得到了高质量的再现象。 - With The direct wave method we only can work out the dry density of the topsoil of subgrade.
直达波法采用叩板法来激发剪切波，这样根据测得的剪切波波速只能求出路基表层土的干密度。 - In order to detect moving targets, the intensive direct wave signal should be restrained by non-cooperative radiative radar.
非合作源雷达要完成对运动目标的检测，必须能够有效地抑制强烈的直达波信号。 - Secondly estimate migration velocity field with the help of direct wave tomography.
其次通过直达波层析成像估算偏移速度场； - Simultaneously, aiming to the characteristic of parabolic type of direct wave, parabolic Radon transform is researched mainly. Through researches and experiments repeatedly on each parameter, suppression on other wave field type is realized, and direct wave field is separated better.
同时，针对微地震直达波抛物形态的特征，重点研究了抛物Radon变换，通过对各个参数的研究和反复试验，实现了对其他类型波场的压制，较好地分离出了直达波场。 - By using a least square method under zeros constrain, strong direct wave and multiple access interference are effectively solved.
文中给出了一种零点约束条件下的干扰抑制方法，有效地解决了多址干扰和直达声干扰的抑制问题。 - The adaptive interference canceling suppressed direct wave method is proposed based on the average interference canceling method, and demonstrated the efficacy of this method that can adapt to changing by the wall surface is undulate.
在平均对消抑制直达波方法的基础上提出自适应对消抑制直达波方法，通过仿真验证了该方法能够适应墙体表面的起伏变化。 - The error matrix composed of array gain, phase and sensor location uncertainty is estimated using the direct wave signals received by the moving receiver in three different directions.
该方法利用接收平台在三个不同方位接收到的直达波信号，对由发射通道增益、相位误差以及阵元位置扰动构成的误差矩阵进行估计。 - So this problem has been solved by this way that the direct wave signal and reflected wave signals are measured separately.
于是采用直达波信号与反射波信号分开测量的办法，解决了这一问题。 - This method can implement calibration of direct wave without keeping radar stations in synchronous condition.
该方法不需要雷达站之间保持同步就能实现直达波校准。 - The notion of ultra-thin layer has been introduced into this paper during modeling and the refraction wave is taken into consideration for simulation on the premise of existing simulation for direct wave, transmission wave and reflection wave.
本文在模型建立上引入了超薄层概念，并在前人模拟的直达波、透射波、反射波基础上模拟了折射波，使正演模拟的多波场信息更丰富。 - In all the noise, the direct wave, multiple wave, seriously interferes with the seismic signal resolution.
在地震信号的各种噪声中，直达波，多次波等各种干扰波与信号叠加在一起，严重干扰了地震信号的分辨率。 - Therefore, the energy of direct wave is pumped by the multiple forward scattering process between S wave and scatters, and the pumped energy is transferred to the coda wave part, which form the high frequency S coda wave.
这意味着：S波在传播介质中与散射体的多次前散射作用，抽取了直达波的能量转移至尾波段，从而促成了高频S尾波的形成。 - First the real VSP data should be preceded wave field separation and the direct wave should be extracted. Then this paper chose a proper algorithm of Q value inversion.
首先对实际的VSP资料进行了波场分离并提取了直达波，然后选用了合适的算法进行了Q值的反演工作。 - Thus, a new quantitative measurement for the S wave envelope broadening is provided. Secondly, based on anisotropic scattering patterns, the effect of group of direct wave and single scattering term and multiple scattering terms on S wave velocity envelope is investigated.
其次，基于各向异性散射模式，分析了直达波与单次散射组合项，以及多次散射项对S波速度包络的影响。