助手标题  
全文文献 工具书 数字 学术定义 翻译助手 学术趋势 更多
查询帮助
意见反馈
   扫描信号 在 地质学 分类中 的翻译结果: 查询用时:0.027秒
图标索引 在分类学科中查询
所有学科
地质学
地球物理学
无线电电子学
矿业工程
自动化技术
物理学
更多类别查询

图标索引 历史查询
 

扫描信号
相关语句
  sweep signal
    Choosing the sweep signal for processing vibroseis data
    可控震源资料处理中扫描信号的选择
短句来源
    Study on the Cooperate Joint Between SN388and ADVANCE Sweep Signal
    SN388与ADVANCEⅠ扫描信号发生器的配接
短句来源
    Some points needing consideration in the design of vibroseis sweep signal
    可控震源扫描信号设计中一些问题的考虑
短句来源
    Zhang Hongle. Rotation phase and logarithm fragment signal - a kind of sweep signal for improving signature of correlated wavelet.
    一种改善相关子波特征的扫描信号——“旋转相位,对数分段”扫描信号
短句来源
    All the conventional vibrators use the sweep signal of which the instantaneous frequency shows linear change with time.
    常规可控震源都是采用瞬时频率随时间线性变化的扫描信号
短句来源
更多       
  scanning signal
    From these response curves,we can see that when v_1 and ρ_1 increase, scanning signal energy and the penetration decrease so that the signal amplitudes trend toward uniform,and that in the case of v_2=250 -1050m/s and ρ_2=1.4-2.18×10~3kg/m~3,the coupling response is low pass,which causes a good coupling.
    从计算结果可以看到:随着v_1和_2的增大,扫描信号的能量减小,穿透能力变差,导致振幅特性趋于均一; v_2=250—1050m/s,ρ_2=1.4—2.18×10~3kg/m~3时,耦合响应为低通,为良好耦合区。
短句来源
    The principle of seismic exploration by using vibroseis is:①Vibroseis sends scanning signal into the underground by using continuous seismic wave.
    由此可见,扫描信号的自相关函数是影响地震勘探分辨率的重要因素,是提高可控震源分辨率的重中之重。
短句来源
    A scanning signal from vibroseis is correlated with reference one to give rise to a correlation record.
    可控震源激发的地震波是一个扫描信号,将此扫描信号与参考扫描作互相关得到相关记录。
短句来源
    According to the characteristic and demand of the scanning signal,further more the design of Arbitrary Waveform Generator(AWG)based-on Direct Digital Synthesis(DDS)and the real-time control of sweep signal are discussed.
    文章针对其输出扫描信号的特点和要求,进一步探讨了基于直接数字合成(DDS)的任意波形发生器(AWG)的设计和扫描信号相位实时控制等问题。
短句来源
  sweeping signal
    A sweeping signal improving characters of correlation wavelet
    一种改善相关子波特性的扫描信号
短句来源
    The paper describes general principle of vibroseis method,whichtransforms band-limit impulse to sweeping signal,then uses the sweeping signal to drive vibroseis.
    文章描述了可控震源方法的一般原理 ,即把有限带宽的脉冲信号转换成变频扫描信号 ,并利用该扫描信号驱动可控震源。
短句来源
    increasing the driven amplitude to a certain degree may not increase down-going energy of sweeping signal but increase harmonic contents on the contrary;
    驱动幅度增加到一定程度时,不一定能增加扫描信号的下传能量,而是增加了谐波成分;
短句来源
    The correlation wavelet resulted from the correlation processing of reference sweeping signal with received reflection signals of strata is basic waveform constituting seismic correlation records of vibroseis.
    参考扫描信号与检波器所接收到的地层反射信号进行相关处理后得到的相关子波是构成震源相关地震记录的基本波形。
短句来源
    High-quality's sweeping signal can effectively improve the quality of seismic data and construction productivity.
    品质优良的扫描信号可以有效地提高地震记录品质和施工效率。
短句来源
更多       
  “扫描信号”译为未确定词的双语例句
    The effect caused by the time shift between two sweep signals must be considered for the circumstance (1).
    对于情况①要考虑两令扫描信号之间的时移产生的影响。
短句来源
    FM-CW geological radar is capable of detecting subsurface anomalies by using linear sweep frequency transmission of a periodically repetitive continuous FM signal.
    FM—CW地质雷达是一种通过发送周期性的连续调频(FM)线性扫描信号达到探测地下异物目的的仪器。
短句来源
    Sweep sinusoid signal is used to test the middle and high frequency band of instrument, and at low and ultra low frequency, commercial signal generator can′t generate corresponding sweep sinusoid signal, therefore, 2 n series pseudo random signal with controllable bandwidth is used as exciting signal. The whole frequency range can be covered by several measurements.
    在仪器的低频段和超低频率 ,商用信号发生器无法产生相应的正弦扫描信号 ,采用带宽的 2 n 系列伪随机信号作为测试的激励信号 ,通过几次测量就能完成仪器在整个工作频率范围内的测试工作 .
短句来源
    If you want to maximally reduce the harmonics in vibroseis signal, it must realize the reasons that cause the harmonics and adopt relevant measures to reduce the harmonics of source.
    由于可控震源相关地震记录的产生存在着的一些特殊问题,本文提出有必要对可能导致”源致干扰”产生的参考信号中的谐波畸变分量大小进行监控。 震源信号中谐波畸变对相关地震资料面貌的不良影响与所采用的扫描信号类型和扫描参数有关。
短句来源
    The seismic source uses the rotation of centrifugal quality to produce seismic energy. The produced sweep signals are recorded by clockwise and counter clockwise rotation at each source point.
    这种地震震源采用离心质量旋转地震能量 ,在每个震源点记录下顺时针转动和逆时针转动所产生的扫描信号
短句来源
更多       
查询“扫描信号”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
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。
  sweep signal
Co-Phased Median Filters, Some Peculiarities of Sweep Signal Processing
      
A 6 volt, 10 Hz to 10 kHz frequency sweep signal is applied to the circuit in Figure 3 and Vs is measured.
      
As well the device is limited to the resolution of the sweep signal.
      
During the process of vibroseis acquisition, reflections of the sweep signal are recorded with geophones.
      
Main disadvantage is that the sweep signal falls below the carriers and above the noise floor on the oscilloscope showing the detected output.
      
更多          
  scanning signal
The scanning signal was always significantly higher above the tight junctions, but was uniformly distributed along the junctions.
      
Comparing with the conventional approaches, the scanning signal due to an arbitrary shaped crack can be calculated in a significantly reduced CPU time but with higher accuracy.
      
Comparing with the conventional approaches, the scanning signal due to an arbitrary shaped crack can be calculated in a significantly reduced CPU time but with higher accuracy.
      
Mass detection is usually performed by scanning signal frequency to detect resonance.
      


All the conventional vibrators use the sweep signal of which the instantaneous frequency shows linear change with time.If a proper non- linear change of the instantaneous frequency is realized,we can get a frequency spectrum whose input is the mean of the reciprocals of bed attenuation coefficients.The time function of the frequency speetrum is a logarithmic sweep signal,whose amplitudes in 10—100Hz band may be increased by 20 db.This sweep signal has desired advantages:more high frequency content,less harmonic...

All the conventional vibrators use the sweep signal of which the instantaneous frequency shows linear change with time.If a proper non- linear change of the instantaneous frequency is realized,we can get a frequency spectrum whose input is the mean of the reciprocals of bed attenuation coefficients.The time function of the frequency speetrum is a logarithmic sweep signal,whose amplitudes in 10—100Hz band may be increased by 20 db.This sweep signal has desired advantages:more high frequency content,less harmonic and low frequency contents,and hi- gher formation resolution.

常规可控震源都是采用瞬时频率随时间线性变化的扫描信号。如果把瞬时频率作适当的非线性变化,就可以得到一个以地层衰减率的倒数的平均值为输入的频谱。此频谱的时间函数为一对数扫描信号,在其10—100赫的频带内,振幅强度可以增长20分贝。此扫描信号具有很理想的特性,它可以增加记录的高频成分,降低低频和谐波成分,提高地层的分辨率。

Spiking deconvolution is based on minimum phase wavelet assumption. Inpulsive excitation roughly satisfies this assumption. A scanning signal from vibroseis is correlated with reference one to give rise to a correlation record. The ideal wavelet on the correlation record should be a Klander wavelet with zero phase. Consequently, the first break of the correlation record is earlier than the real one after conventional spiking deconvolution. The time difference is related to the frequency of the wavelet in such...

Spiking deconvolution is based on minimum phase wavelet assumption. Inpulsive excitation roughly satisfies this assumption. A scanning signal from vibroseis is correlated with reference one to give rise to a correlation record. The ideal wavelet on the correlation record should be a Klander wavelet with zero phase. Consequently, the first break of the correlation record is earlier than the real one after conventional spiking deconvolution. The time difference is related to the frequency of the wavelet in such a way that the lower the frequency is the larger the time shifts. Therefore, zero phase deconvolution is suitable for vibroseis data. Presented in the paper is the application of zero phase deconvolution module TVDEP and its results.

脉冲反褶积是以最小相位子波为基础的,脉冲震源激发的地震波就接近这种假设。可控震源激发的地震波是一个扫描信号,将此扫描信号与参考扫描作互相关得到相关记录。理想情况下的相关记录应为克劳德(Klander)子波,它是零相位子波。对相关记录作脉冲反褶积处理后,会引起初至时间的提前,其提前量的大小与子波本身的频率有关。频率越低,周期越大,提前量越大。因此,对可控震源资料做零相位反褶积处理是合适的。本文介绍了零相位反褶积TVDEF模块的实现过程和应用效果。

In choosing sweep signal for processing vibroseis data, we have the following three circumstances: (1) with the exception of initial and final times, the chosen sweep signal for processing is all the same as the field sweep signal; (2) their initial and final times are same, but their initial and final frequencies are different; (3) the field sweep signal is changeful, but the chosen one for processing is constant. The effect caused by the time shift between two sweep signals must be considered for the circumstance...

In choosing sweep signal for processing vibroseis data, we have the following three circumstances: (1) with the exception of initial and final times, the chosen sweep signal for processing is all the same as the field sweep signal; (2) their initial and final times are same, but their initial and final frequencies are different; (3) the field sweep signal is changeful, but the chosen one for processing is constant. The effect caused by the time shift between two sweep signals must be considered for the circumstance (1). In the circumstance (2), the moveout between two signals in same frequency band should be taken into account because 1Hz frequency variation can cause the time Shift of 0.463 seconds. There is no regulation for circumstance (3). From these, we can see the importance of the sweep signal chosen for processing vibroseis data. Every seismic record must be correlated with its own sweep sig- nal instead of the standard sweep signal produced by computer. Detailed note is necessary when field sweep signal is changed.

在可控震源资料处理中,选取扫描信号有三种情况:①处理时用的扫描信号和野外用的扫描信号完全一样,但起、止时间不一样;②扫描信号的起、止时间相同,但起、止频率不同;③野外用的是一个频繁变化的扫描信号,而处理时用的是一个不变的扫描信号。对于情况①要考虑两令扫描信号之间的时移产生的影响。对于情况②要考虑共同频段之间的时差;当频率变化1赫兹时,造成的时移为0.463秒。情况③是无规律可循的。由此可见,扫描信号在可控震源资料处理中的作用。每炮记录相关时必需选用本炮实际记录的扫描信号,绝对不能选用计算机产生的统一扫描信号。野外记录的扫描信号变化时,必须有详细记录。

 
<< 更多相关文摘    
图标索引 相关查询

 


 
CNKI小工具
在英文学术搜索中查有关扫描信号的内容
在知识搜索中查有关扫描信号的内容
在数字搜索中查有关扫描信号的内容
在概念知识元中查有关扫描信号的内容
在学术趋势中查有关扫描信号的内容
 
 

CNKI主页设CNKI翻译助手为主页 | 收藏CNKI翻译助手 | 广告服务 | 英文学术搜索
版权图标  2008 CNKI-中国知网
京ICP证040431号 互联网出版许可证 新出网证(京)字008号
北京市公安局海淀分局 备案号:110 1081725
版权图标 2008中国知网(cnki) 中国学术期刊(光盘版)电子杂志社