sine signal

By movingperiod sine wave model , the precise demodulation of AM signal wave is achieved.

在此基础上讨论实现正弦载波的调幅信号的精确解调问题.

Design of Sine Signal Source Which can Overlapped Harmonic Based on DDS Technology

基于DDS技术的可叠加谐波的正弦信号源设计

It shows this method achieves a satisfying effect and has lower signal to noise rate So, it will be an effective method in measuring nV grade sine signal.

仿真结果表明，此方法在测量nV级微弱正弦信号方面取得了满意效果，且信噪比门限很低，有望成为测量nV级正弦信号的一种有效方法。

The classical signal analysis method is Fourier transformation, whose essence is to decompose the signal wave into many sine waves, and which also can be seen as representation of time function in frequency domain.

傅里叶（Fourier）变换是经典的信号分析方法，其实质是：把波形分解成许多不同频率的正弦波之和，可看作是时间函数在频率域上的表示。

Analysis of the Sine Signal Distortion and the Total Harmonic Distortion

正弦波形畸变和失真度的分析

Hardware designs realized the amplifying cell circuit and anti aliasing cell circuit, while software designs realized the sine signal, bandpass filter, lowpass filter and logical control cell assembler modules.

硬件设计实现了运放电路、抗混叠滤波电路等；软件设计实现了正弦信号发生模块、带通滤波器模块、低通滤波器模块和逻辑控制程序等。

Data are often transmitted in the context of a carrier signal such as sine wave.

数据传输通常采用载波信号,如正弦波.

It is usually to go through the digital time conversion signal by performing a digital-to-analog converter for generating sine wave.

它一般是要经过数字式的时间转换信号再通过执行数模转换产生正弦波。

High accuracy sine drive signal source design and realization

高精度正弦激励信号源的设计与实现

Research of Measuring nV Grade Sine Signal Using Chaos System

混沌系统测量nV级正弦信号方法的研究

In the input enter the square wave, sine wave, triangle wave signal excitation, feed-side to collect different fault information, in particular the input sine wave excitation, and its most obvious fault features can be more easily collected current fault information.

输入端分别输入方波、正弦波、三角波等信号激励，馈电端能采集到不同的故障信息，特别是输入正弦波激励，其故障特征最为明显，能更容易采集到电流故障信息。

In the method the unknown fault signal space was mapped to known sine function space using topology contravariant map, the purpose of studying the unknown space was proposed through studying known space.

该方法把未知的机械故障信号空间通过拓扑反变映射映射到已知的非平稳正弦函数空间，通过研究已知空间的性质达到研究未知空间性质的目的。

Multi-functional Sine Signal Generator Based on FPGA Technology

基于FPGA的多功能正弦信号发生器

A measurement system for sine signal difference is designed by using DSP and digital correlation method.

设计一个采用DSP技术和数字相关法测量两路正弦信号相位差的检测系统.

Three-phase sine wave wave signal can be symmetrical three-phase alternating current after power amplifying.

三相正弦波信号经功率放大器放大后成为对称三相交流电。