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- Also air bladder and sand contained in mud, type of mud affect attenuation of mud pulse signal. 钻井深度、泥浆中的气泡量、含砂量和泥浆类型对信号衰减有一定的影响。
- In the course of transmission, mud pulse signal mainly disturbed by drilling pump,engine in the bottom hole, air bladder contained in mud and movement of drilling equipment. 泥浆脉冲信号在传输过程中主要受钻探泵、井底动力机、泥浆中的气泡及活动钻具的干扰;
- mud pulse signal 泥浆脉冲信号
- The paper introduces three basic working styles of signal transmission of mud pulse MWD sys tern,pressure positive pulse, pressure negative pulse and continuous pressure wave. 介绍了泥浆脉冲随钻测量系统信号传输的3种基本工作方式:压力正脉冲、压力负脉冲和连续压力波。
- Mud pulse MWD can not be used when too much gas or air in drilling fluid, and therefore electro-magnetic telemetry has speedily developed as an alternative. 钻井液气体较多时泥浆脉冲方法也难以应用，而电磁波随钻遥测技术作为一种替代技术近年来发展很快。
- After equilibrium and regeneration, the current pulse signal reverts to standard digital pulse signal. 经过均衡和再生后,转变成标准的数字脉冲信号。
- Due care must be taken to ensure that the pulse signal itself shall allow no irregularities and no interruptions. 应注意保证脉冲信号本身不出现不规则现象和中断现象。必要的反译变通可使译文简练、明了。
- It can be used to detect the radar pulse signal and estimate its parameters, such as PA, PW, TOA, SNR and RF. 该算法可在低信噪比条件下完成雷达脉冲信号的检测，然后对雷达脉冲信号的脉冲幅度、脉宽、到达时间、信噪比和载频等参数进行估计。
- With the development of drilling technology, more borehole information is needed to know while drilling and the mud pulse telemetry now hardy meets the requirement of intelligent drilling. 摘要随着钻井技术的发展，需要了解的井下信息越来越多，泥浆脉冲随钻信息传输难以满足智能化钻井要求。
- Electrical power pulse signal will be entered into angular displacement or displacement of the Central Line control components. 步进电机是将电脉冲信号转变为角位移或线位移的开环控制元件。
- The flow sensor made the leaf wheel change the pulse signal,the computer use the pulse number to record the heat water quantity. 流量传感器将叶轮转动信号转换成电脉信号，计算机通过记录脉冲数实现对流过的高温水进行累计测量；
- In the electronic reconnaissance area, the conventional detection method of the radar pulse signal is based on nonmatched envelope detection. 摘要在电子侦察领域中，传统的雷达脉冲信号检测是基于包络检波的非匹配检测。
- As a special case,the effect of rectangular envelope edge of pulse signal on intermediate frequency sampling is carefully studied. 作为一种特例 ,详细研究了简单脉冲信号矩形包络边沿对镜频抑制的影响 ;
- This paper is devoted to the exact and real-time detection and recognition of the laser pulse signal in the spectra between 400 and 1700nm. 本文的工作重点是对400-1700nm 光谱范围内脉冲激光光谱信号进行准确、快速、实时的检测与识别。
- They are either transmitted to surface by mud pulses, or else recorded downhole and retrieved later when the instrument is brought to surface. 两种方式或者通过泥浆脉冲将信息传输到地表,或者在井下记录,或者在将工具带到表面之后再进行检索。
- Conclusion Using this method, a lot of information of the pulse signal can be found.It provides a new method for objectification of pulse diagnosis. 结论应用这种方法可以比较准确地分析脉象信号所携带的大量生理信息，从而为中医脉诊客观化提供了一种新方法。
- By using the sample data of the pulse signal to fit the curve, it calculates the maximum of the curve, that is, the amplitude of the pulse signal. 由脉冲信号采样点数据，通过曲线拟合，计算出曲线的极大值，该值即为闪烁探测器输出脉冲信号的幅度。
- Only one healthy person Z10 is misjudged in all the 30 pulse signals. 在30例脉象信号中仅有正常人Z10被误判为吸毒者。
- Mud Pulse Measurement While Drilling System 泥浆脉冲随钻测量系统研究
- The pulse signals were processed by using the fast Fourier transforms. 应用快速傅立叶变换方法对脉搏信号进行了分析。
