signal wave

The total received signal is the sum of the direct coupled wave, the signal reflected from the ground and the signal scattered by the buried target.

地面反射和直耦波所组成的直达波远大于目标信号，从而使系统的信杂比降低。

Simple and cheap sine wave signal generator and electromagnetic induction sensor are designed to meet the needs of the navigation system of spraying robot in the environment of the greenhouse.

为满足喷雾机器人导航系统的需要，设计了适合温室恶劣环境、结构简单、价格低廉的正弦波信号发生器和电磁感应传感器。

Statistic Evaluation Methods of Linearity of Triangle Waveform Signal Edge Millimeter Wave Radar for Measurement between Vehicles

三角波信号沿线性度的统计分析评价方法

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。

In Millimeter-Wave Identification Friend or Foe System ( MW-IFFS), the identification information will be modulated by Spread Sequence after it is processed in Data Signal Processing ( DSP) System.

在毫米波敌我识别系统中，识别信息在低频部分经过数字信号处理后，进行扩频调制后由微波收发信机进行传输。

Arranged signal activating lock circuit and time-base control circuit in the sound wave receiving circuit to take the initial signal of back wave as the valid one in the cycle, thus to improve the ratio of signal vs. noise and detective precision.

在超声波接收电路中设有信号触发锁定电路和时基控制电路。实现以各探头中最早收到的回波信号为本检测单元的有效信号，有效提高信噪比和检测精度；

Simulation results show that the proposed method can effectively block the signal and reject interferences. Besides, the signal wave can be exhibited in real time through the proposed method. 6.

仿真实验表明：此方法能够稳健地实现信号阻塞，具有较强的干扰抑制能力，并能够实时地给出目标辐射噪声的时间波形。

Design and Realization of a Displaying Control for Signal Wave and Spectrum Using DLL Technique

基于DLL的信号波形频谱显示控件的开发

Represents various signal waveforms. Type of signal wave can be specified.

表示各种信号波形. 可指定波形类型.

The DDS signal generator which can adjust signal phase signal frequency and complex wave is designed.

最终实现频率、相位、复合波形皆可调节的直接数字合成的信号发生器.

The carrier wave has got out of phase with the signal wave.

载波同信号波是异相的.

Ignite secondary wave, primary wave and ignite timing signal wave can provide valuable data about each air cylinder ignition and combustion status.

结果表明：1.点火次级波形、初级波形、点火正时信号波形能够提供有关各个气缸点火和燃烧情况的关键信息。

To obstruct the overvoltage wave which overpasses the power and signal ( inner protection and overvoltage protection);

阻塞沿电源线或数据、信号线引入的过电压波（内部保护及过电压保护）；

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。

For conventional dielectric antenna, the transmitting UWB signal wave shape will be widened because of dispersion.

虽然,时谐场中应用的介质杆行波天线, 在超宽带情况下,波在其中传播时会产生色散,引起波形展宽.

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.

By peak value sampling the information of baseband signal can be obtained from an AM signal directly. By frequency conversion sampling the carrier wave's frequency of a PSK signal can be cut down.

对AM信号进行峰值采样可以直接获得基带信号的信息，对PSK信号进行变频采样可以降低其载波频率。