作为信号的

The output of the complex phase comparator (32) is converted to an analogue signal which is applied as a control signal to the transmitter VCO.

复相比较器（32）的输出被转换为一个模拟信号，该信号被作为一个控制信号送给发射机VCO。

Under the circumstances, this dissertation chooses the key problem in urban traffic signal control-signal timing parameters and optimization methods as its research target. This dissertation is consisted of introduction, run characteristic analyze of mixed traffic flow, collection of database, canalization design, design of signal phase, optimization methods of signal timing parameters of mixed traffic, and conclusion and expectation.

在这种背景下，本论文选择城市交通控制系统的核心问题——信号配时参数及其优化方法作为主要研究内容，包括绪论、混合交通流运行特性分析、数据采集与分析、渠化设计及信号相位设计、混合交通流信号配时优化方法研究和全文总结与展望六部分内容。

Combined with the latest development of modern technology of power electronics and digital signal processing, the power supply reseached in the thesis is based on DSP processor and IGBT-a high speed and large power convector. Its work frequency increases to 20kHz and its control is in full digital method.

本文结合现代电力电子技术以及数字信号处理技术的最新发展，采用数字信号处理器作为控制核心，高速大功率开关器件IGBT作为逆变器功率器件，将该除尘电源的工作频率提高到20kHz，并实现了对该电源的全数字化控制。

So using fractal theory box dimension and information dimension can be extracted from signal as the classification feature.

因此利用分形理论从信号中提取盒维数和信息维数作为分类特征，这种特征可包含信号幅度、频率和相位的变化规律，并集中了不同调制信号之间的差异信息。

Adopt one-chip computer 89C51 survey systematic core as the human body, fever for Israel clear up electric infrared ray gather the part for datum, after relatively enlarging, input the one-chip computer and judges data and deals with.

并采用单片机89C51作为人体探测系统的核心，以热释电红外线为数据采集部件，经过比较放大之后，输入单片机进行数据判断及处理。当检测到有被测物体进入测量范围时，系统自动发出声光报警信号，等待一段延迟时间后自动消除报警信号，并可手动解除报警信号。

As a new signal processing method, Wavelet analysis decomposed different kinds of frequency element to non-overlapped frequency bands and this method put forwards an effective way to signal filter, signal-noise separating and character picking-up, especially it has well de-noising capability.

小波分析作为一种全新的信号处理方法，它将信号中各种不同的频率成分分解到互不重叠的频带上，为信号滤波、信噪分离和特征提取提供了有效途径，特别在信号去噪方面显示出独特的优势。

This system uses the deuterium lamp as its blazed lamp-house, and makes mechanical turnplate in use of modulating light signal with two frequencies, which is drived by in-phase electromotor with constant velocity. A potomultiplier tube is used to conversion optical signal to electric signal. Using Lock-In Amplifiers to realize magnifying the metrical signal using difference method with two different frequencies. We also analyze its principle of each part of the apparatus and design the realization circuits of each part. The data analysis and the in-phase electromotor control circuits are fulfilled by SCM; the single chip control systems hardware interface and software design are given.

该系统的光路部分使用氘灯作为激发光源，用同步电机恒速驱动的机械盘调制出双频光信号，利用一个光电倍增管进行光电信号转换；信号处理部分采用锁相放大器实现信号双频差分处理，分析了其各组成部分的原理，设计了各部分的具体实现电路；使用单片机进行数据差分处理和电机控制，给出了单片机控制处理系统的硬件接口电路和软件设计。

After sampling and avoidance learning, herbivores can discriminate this signal and associate it with unpleasant experiences, so aposematic coloration comes into being between plant-animal interaction. The theory of aposematic coloration has not been accepted in plants while it has been adequately discussed for a long time in animal kingdom until Hamilton's signal theory about autumn colours was published.

颜色作为一种稳定有效的视觉信号通常是花和果实的诱惑信号，某些情况下也是一种警戒防御信号，植食动物经过抽样学习后能识别这种防御信号并主动回避，从而形成了植物的警戒色。

C8051F005 is the control center of the survey meter, the signal is obtained by jaw pressure transformator and current transformator. Direct Digital Frequency Synthetics technology is adopted to automatically adjust the frequency of the actuating signal and avoid the interference of the signal in the ground network.

该检测仪采用C8051F005单片机作为控制处理中心，钳口式电压互感器和电流互感器检测接地电阻信号，运用直接数字频率合成技术自动调整激励信号频率，从而避免地网中干扰信号源的影响。

Keyboard function set through waveform type,frequency,amplitude,duty cycle,and other parameters of a signal to the microprocessor 89C51 control,MAX038 generated by the various signals,In this process,four-channel signal through D/A converters have simulated voltage and current,It transported up through the analog signal amplification,it enters the frequency MAX038 coarse-IIN,fine-tuning FADJ end,the duty cycle control-DADJ. In its COSC port received a three relays and oscillation frequency capacitance as a choice.

通过键盘设定函数波形种类、频率、幅度、占空比等参数的一个信号进入单片机89C51控制，由MAX038产生各种波形信号，在此过程中信号通过四通道D/A转换器产生模拟电压和电流，它再通过运放将模拟的信号放大，它进入MAX038的频率粗调端IIN、微调端FADJ、占空比控制端DADJ、在它的COSC端口接一个继电器和三个振荡电容作为频率选择。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。