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- reproducing seismic signal 回放地震信号
- The paper gave a high resolution processing method based on double spectrum of seismic signal from angle of higher order accumulated amount of signal. 本文从信号高阶累积量的角度出发给出了一种基于地震信号双谱的高分辨率处理方法。
- Apparently, such a noise is powerless for the seismic signal possessing a dynamic range up to 120db. 这样的噪音显然对于动态范围高达120分贝的地震信号的真振幅恢复是无能为力的。 本文的目的在于找到一个最佳的噪音函数以获得相应的最大的真振幅恢复能力。
- The instantaneous frequency of seismic signal could be derived by Hil-bert transformation. 用希尔伯特变换的方法可以求出地震信号的瞬时频率.
- Seismic signals are stored digitally in binary code. 地震信号是以二进制编码的数字形式储存的。
- It is usually use geophone array to receive seismic signal in seismic exploration. 地震勘探中,通常利用检波器组合的办法来接收地震信号。
- It is that energy conversion that is responsible for the violent impact against the earth that generates the seismic signal. 就是这种能量转换引起对地层的猛烈冲击,从而产生了地震信号。
- Compared to conventional error analytic methods, time-frequency representation can reflect the amplitude misfit and phase misfit of seismic signal. 摘要时频误差分析法与常规的误差分析法相比,既能反映地震信号的振幅误差,也能区分其相位误差。
- Geophone seismic signal is received the most critical link is placed in the ground up through the earth's vibration sensors, and then converted into electrical signal output. 地震检波器是接收地震信号最关键的环节,是通过放置在地面上来感应大地的振动,然后转换成电信号输出。
- Time-frequency spectral decomposition of seismic signal based on GST can aid in the classification of seismic sequences and serve as an important tool for seismic interpretation. 地震信号的广义S变换时频谱分解可作为地震层序识别和解释的重要补充。
- The conventional filtering method would damage the seismic signal and prove inadequately in removing the strong noise with broad frequency band from the seismic signal. 常规消除工频干扰的滤波方法会伤害有效信息,并且对频带较宽的机器噪声亦不适用。
- The thesis based on random fractal theory, utilizing fractional Brownian motion model, using R/S analysis technique and wavelet transform method to estimate Hurst exponent which depicts the complexity of seismic signal. 基于随机分形理论,采用分数布朗运动模型,应用R/S分析技术和基于小波变换的谱参数估计方法计算地震道信号的赫斯特指数。
- Tapering the sweep signal can partially reduce the side lobes of reflective seismic signals in correlation seismogram section. 对震源扫频信号进行适当地锥化处理可以部分地压制相关地震剖面中反射地震信号的旁瓣。
- Bombast notwithstanding, the small size of seismic signals from the tests of both countries has cast doubt on the declared explosive yields [see illustration on page 74]. 试爆后,两国宣布的爆炸威力却让人怀疑,因为造成的地震幅度很小(见50页插图)。
- The seismic signals are identical to the elephant calls in the air, says O''Connell-Rodwell. 在通过驯服的非洲象进行的较早的研究中,斯坦福大学研究小组已清楚:理想条件下,大象的次声吼叫能使震波传播两公里左右。
- The thesis mainly discussed the realization with software and hardware of the seismic signals detecting and target identifying microsystem. 本文重点讨论了小型便携式地震动目标探测识别系统的软、硬件实现。 硬件主要由三部分组成:信号调理电路对检测到的微弱地震动信号进行放大;
- XU Jin-xi,LU Gong-he.The influence of geophone tailcone structure upon acquired seismic signals[J].Oil Geophysical Prospecting,1999,34 (2):204-209. [1]徐锦玺;吕公河.;检波器尾锥结构对高分辨率地震信号的影响[J]
- When the ground was impacted the produced seismic signals were acquired by the detecting system composed of geophones and processing unit. 地震检波器组及处理单元组成的检测系统采集管道周围地面入侵目标在活动时产生的地震动信号;
- A red light is usually a signal of danger. 红灯通常是危险的信号。
- To study the mantle, geophysicists have had to rely on indirect methods, such as looking at seismic signals and measuring gravitational field variations. 要更了解地函,地球物理学家必须仰赖间接的方法,例如检视震波讯号或是量测重力场的变化。