By using moving one period sine wave model, the precise demodulation of PM signal wave is achieved.
通过使用一个周期的正弦波曲线模型的滑动拟合法，实现了正弦载波相位调制信号波形的精确解调。
This demodulation system also has serial port, parallel port, JTAG port, and can display signal wave in LCD.
本解调系统还拥有串口、并口等通信接口以及JTAG调试接口。自带lcd，可以动态显示解调后的信号波形。
Tested vibration signal wave form analysis, speed spectrum matrix analysis, and shaft centerline orbit analysis are made.
测得了机组的振动量值，对测得的振动信号进行了波形分析、转速谱阵分析及轴心运动轨迹分析。
The circuit designed in the thesis could output comparatively flat signal wave, and amply signals with bandwidth of high to 40m.
本文实现的电路板可对带宽达40m的信号进行平稳的放大并输出较平坦的信号波形。
This paper introduces hardware composition and software design of recording location of signal wave crest with single chip computer.
介绍用单片机记录信号波峰位置方法的硬件组成和软件设计。
Direct digital synthesizer (DDS) is a kind of new frequency synthesizer technique. With it signal parameter can be switched into signal wave.
直接数字式频率合成(DDS)作为一种新的频率合成技术，它可以实现从信号参数到信号波形的转换。
It can measure not only the sine wave, square wave, triangle wave, a sharp pulse but also can measure other characteristics of the signal wave.
它不仅可以测量正弦波、方波、三角波、尖脉冲信号和其他具有周期特性的信号的频率，而且还可以测量它们的周期。
This system consisted of signal perceiving transformation part, signal wave filtration and magnification part, signal collection and analysis part.
该系统由次声信号的感应变换，信号滤波及放大，信号的采集及信号分析显示等一部分组成。
The influence of the principal parameters of optical chirp reversal devices on ability to restore signal wave form and pulse duration has been analysed and simulated.
分析和数值模拟了用瞬态简并四波混频实现光学啁啾反转的器件的主要参数对恢复信号波形和脉冲宽度能力的影响。
By dynamical collecting respirators gas press signal on line and drawing gas press signal wave, this system can measure respirators press values and analyze presss stability.
利用数据采集技术实时在线采集了呼吸机压力的动态变化量，并且将变化量绘制成波形图。
After eliminates the effective zeros and saves the location information of these effective zeros of the signal wave, proposes and implements twice segmentations towards to the signature signal.
在去除信号波形中的有效零点并保存有效零点的位置信息后，提出并实现了对签名信号的两次分割。
This new way solves a great deal of correlation operation and condition judgment in a period, and finally succeeds in computing the relative position of each demodulation signal wave in a period.
另外该改进方法解决了在周期内进行的大量相关运算和条件判断问题，成功实现了计算周期内各个光纤传感器解调信号波形的相对位置。
Next, minimum mean square error (MMSE) filters are applied to the received signal to recover single user signal wave thus implementing user separation and frequency synchronization at the same time.
然后，对接收到的信号应用最小均方误差滤波恢复单用户信号波形，从而同时实现了多用户信号分离及频率同步；
While looking out for a gravitational wave signal, scientists at GEO600 noticed something bizarre.
在寻找重力波信号的过程中，GEO600的科学家们发现了一些奇异现象。
The most likely culprits are things that transmit a signal like a cell phone or a computer operating in Wi-Fi mode which emits an electronic pulse or wave.
最有可能的元凶是手机或带有无线上网功能的电脑一类进行信号传输的设备，这些设备都发送电子脉冲或者电子波。
The most likely culprits are things that transmit a signal, like a cell phone or a computer operating in Wi-Fi mode, which emits an electronic pulse or wave.
最有可能的元凶是手机或带有无线上网功能的电脑一类进行信号传输的设备，这些设备都发送电子脉冲或者电子波。
This in turn would give LIGO scientists an extra clue as to where to search their data for a gravity wave signal.
这反过来给LIGO的科学家提供了一条在哪寻找引力波信号的新线索。
"The wave form of the electric signal changes and at the level of the individual cell, it is changing its discharge," Markham said.
马克·汉姆表示：“单个细胞改变电流可令电信号波形发生变化。”
“The wave form of the electric signal changes and at the level of the individual cell, it is changing its discharge, ” Markham said.
马克汉姆表示：“单个细胞改变电流可令电信号波形发生变化。
The scientists found that the precursor wave front of a single photon always travels at c, like the signal velocity of large groups of photons.
科学家发现，单个光子的前驱波头一般以光速c传播，就像由大量光子携带的信号的传播速度一样。
It produces an inverted sound wave to cancel out unwanted noise in the headphone signal.
随后它便产生逆向声波从而消除耳机信号中不需要的噪声。
In other words, pulse width modulation is a modulation technique for generating variable width pulses to represent the amplitude of an input analog signal or wave.
或者换句话说，脉宽调制是一种调制技术，为发电可变脉冲宽度为代表的幅值输入模拟信号或波。
The headquarters, which sounded the tsunami alert signal on March 11, was later totally submerged under the incoming wave.
这个指挥部在3月11日发出海啸警报后，被随之而来的海浪完全淹没。
The results demonstrate the cross correlation filter not only can suppress random noise in GPR signal but also confirm exactly the onset of reflection wave.
结果表明：应用该文所介绍的处理方法不但能有效压制探地雷达信号中的随机干扰而且能精确确定反射波的起跳点。
This article introduces the work principle of untouched electrode method exploration, wave of transmit signal needed in exploration and circuit that generate transmit signal.
本文介绍了不接触电极法测量的工作原理，测量中所需的发射信号的波形以及产生发射信号的电路。
The surface acoustic wave (SAW) sensor can transform the measured object into frequency output, viz a kind of digital signal output.
声表面波(SAW)传感器能将被测量转换成容易检测的频率信号，即一种准数字信号的输出。
And with so many bloggers eagerly awaiting the opportunity to jump on any bandwagon that comes along, this subtle shift in public attitude could signal a tidal wave of negativity down the road.
而有那么多博客急不可耐地等着机会加入下一拨流行话题。现在公众对Google这种微妙的态度变化可能预示着未来负面看法的大潮。
Analog signals vary continuously; an example of an analog signal is a sound wave.
模拟信号是连续变化的；声波就是模拟信号的一个例子。
With circular antennas accepting the Ultrashort wave signal, by MUSIC arithmetic to measure direction information.
超短波信号用圆形天线阵接收，采用MUSIC算法检测方位信息。
With circular antennas accepting the Ultrashort wave signal, by MUSIC arithmetic to measure direction information.
超短波信号用圆形天线阵接收，采用MUSIC算法检测方位信息。
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