signal measurement

Application of Wavelet Threshold Denoising to Weak Signal Measurement

小波分析在微弱信号测量中的应用研究

Photoelectric Measurement of the Frequency of Micro Vibration Signal& An Active Photoelectric Detector of the Twist of Textured Yarn

微小振动信号频率的光电测定&弹力丝捻度动态光电检测仪

What's more, it is widely applied to the wireless signal measurement in 2G and 3G.

它普遍应用在2G和3G无线信号测量上。

When the measured signal has a very wide frequency chart especially in the fast signal measurement field, in order to easily satisfy the high fidelity requirement that Bandwidth of Long Transmission Line, it is necessary for expanding the Bandwidth of Long Transmission Line.

当被测量信号具有很宽的频谱，尤其是在快脉冲信号测量中，为了测量数据在传输过程中满足高保真度的要求，必须对远距离传输线进行带宽扩展。

Scalar network analyzer is not only practical in wireless radio frequency ( RF) component measurement and the measurement of device linearity can also be applied to the measurement of materials and signal integrity.

标量网络分析仪不仅应用在无线射频（RF）元件测量和设备线性特性测量等方面还可以应用于材料及信号完整性的测量。

Signal Measurement and Control System in Micro Air Vehicle

微小型飞行器中的数据采集与控制系统

After a brief introduction about the A9 signal such as definition, development, measurement condition and instrument, the measure method and apply of the A9 signal are particularly shown.

简要介绍了A9信号的定义、开发、测试环境和测试仪表，重点讲述了A9信号的测试方法和应用。

A measurement and correction system of color uniformity of LCD projection system consisting of video test signal generator, screen, CCD and computer is proposed. The system makes use of 2-D CCD because of its characteristic of rapid collection of two-dimensional image.

根据二维面阵CCD能够快速采集二维图像的特点，提出了一套由视频测试信号发生器、投影屏幕、CCD摄像机和计算机组成的液晶投影显示颜色均匀性测量及校正系统。

First to analysis the experimental signal measurement error, it increases as the percentage of liquid increases and the maximum error is 14%.

主要完成内容如下：1、对实验采集的信号进行了误差分析，测量误差随着液相含率的增加而增加，最大测量误差为14%。

The method of designing the programmable filter used in signal measurement of electrophysiology is described.

本文介绍用于电生理信号测量的可编程滤波器设计方法.

Study of signal measurement and power circuit for modern-gas chromatography thermal conductivity detector

气相色谱热导检测器的信号测量与电源电路研究

In order to test the launching height of the signal flare, the measurement technology based on the single area array CMOS camera is proposed by establishing mathematical model.

为了测试信号弹发射高度，通过建立数学模型，提出采用单个面阵CMOS相机对信号弹高度进行测试的技术。

The results indicate that, under the thermal noise approximation, the measurement accuracy of Brillouin frequency shift is dependent on thermal noise, the derivative of the transmission function of the edge optical filter and the power of Brillouin scattering optical signal.

结果表明，在热噪声近似下，布里渊频移测量精度与热噪声、边缘光滤波器透射函数的导数及布里渊散射光信号功率有关。

To process sampling data with a recursion sum algorithm decreases the interference of harmonic signal measurement.

介绍了递推求和算法抑制谐波干扰的机理,分析了运算量,给出了算法的实现公式和程序运行结束的判断规则.

Vibration Signal Measurement and Analysis on a Laboratory Ball Mill

试验用球磨机振动信号的测试与分析

This paper presents the pulse signal spectrum bandwidth using Romberg numerical integration algorithm under a certain energy wastage required. A reconstruction signal is obtained by Fourier Series, and the optimum bandwidth of the measurement system is also presented.

本文用Romberg数值积分法计算出在一定能量损耗限值要求下的脉冲信号频谱宽度，并用付氏级数对其进行了信号重构验证，据此得出了脉冲信号测试系统带宽的最佳值。

This paper, based on the measurement of the impedance-frequency characteristics and attenuation characteristics of the city telephone line network, proposes a method of FDM to transfer carrier signal, such as digital modulation signal, tone carrier signal, etc.

在对市内电话信道阻抗特性、衰耗特性测试的基础上，提出市话线路可采用频分复用的方法传递载波信号，如数字调制信号、语言载波信号等。

These reasearch results will greatly promote advancement of theory of aging and breakdown under such pulse condition. As a result, frequency control technique can be widely used. A novel PD signal measurement system and statistic analysis software is presented under square wave pulse voltage.

通过这些研究，将极大地促进变频条件下绝缘老化和击穿理论的发展，使变频调速技术应用前景更加广泛。设计了一种新的脉冲电压下局部放电测量系统和统计分析软件。

Design of heartbeat signal measurement system of gymnastic device based on photoelectric correlated cell

基于光电对射管的健身器心率测量系统设计