查询词典 digital signal processing

It can control the signal light with its internal project; also the user can modify the project by the control panel. And the outstanding point is that the intelligent traffic signal machine has the function of long-distance stakeout and control. Namely the intelligent traffic signal machine can transmit the real time traffic data to the upper computer and display the data on computer. The upper computer can modify and transmit the traffic data to the signal machine, improving the efficiency of the traffic control. The system realizes the function of communication by the TCP/IP protocol, and the capability is very good in reliability and real time.

本信号机能够运行内部的固有方案控制交通信号灯，同时可以通过键盘面板对方案进行修改，其突出特点是具备远程监控功能，即信号机能够实时将路口交通方案信息反馈给监控中心并在主控界面显示出来，监控中心可根据路口实际情况对现行交通方案进行修改，通过以太网下传给路口信号机，改善交通流量控制。

This thesis proposes a novel method of retiming E1 signal of the SDH output and using it as a reference synchronization signal for Trunking Gateway. The proposed retiming method can generate the E1 signal of TG input in comply with the maximum relative time interval error requirement of 52.5ns specified in the PRC-Generation standard. The method successfully reduces the E1 signal error level to a smaller margin of 300ns than that of the PRC-output standard.

本论文提出将同步数位阶层输出E1信号做时序重整，做为中继闸道器的做参考同步信号；这样可使输入中继闸道器的E1信号在最大相对时间间隔误差达到主参考时钟产生的52.5奈秒标准；更能让中继闸道器输出的E1信号，由超出同步数位阶层自由振荡4.6微秒，改善到低於主参考时钟输出的300奈秒标准。

In comparison with the current version, in which the signal-to-noise ratio accuracy of the noisy signal produced is heavily influenced by 'clean' signal itself, the proposed approach has removed this unfavorable impact by choosing another factor to rescale the signal.

在目前广泛使用的加噪信号方法中，产生的信噪比精度受无噪信号的影响很大，与之相比，新方法通过选择新的因子对信号进行归一化，剔除了无噪信号对产生的加噪信号的信噪比影响。

Firstly, after analysis the modules and models that constitute ATE platform, a signal modeling method based on Object-Oriented Analysis is introduced, and some signals' model structures and operations are described. To embody the test requirement in the resource configuration, the complicated signal's generation process is analyzed from the relations between instruments and signals, subsequently, a series of recursion expressions are put forward to acquire the signal's origination through the deduce process layer by layer. Going with the recursions, ATE can get the specifications P and In , which present the cost and orders of the signal generation, and can be used to evaluate its generation complexity.

首先，在分析了构成通用平台ATE各模块环节和功能模型相互关系的基础上，引入了基于面向对象分析方法的信号模型，从语义上描述了一些信号在结构和操作过程中的实现方法；为了将信号的测试需求反映到测试资源的配置过程中，利用OOA中的关键概念，从仪器资源与信号的相互关系着手，分析了由多种仪器生成一种复杂信号的经过，基于此，提出了由一种复杂信号逐层分解，最终获得其生成资源的递推表达关系；通过这样的递推过程，使ATE可以获取生成该信号的成本与次序的指标P和In，这些可以用来考核生成该信号时以资源信息表示的复杂程度。

Thus,locks through the rail switch electricity the contact locks for the signal electricity the magnet coil delivers the electric current,only then the switch location correct only then causes the closed circuit,the signal electricity to lock has the enough electric current,after namely the approval moves the signal handle to cause the semaphore opens,by the signal electricity locks the contact for the rail switch electricity to lock the magnet coil power transmission electric circuit to separate,therefore cannot move the rail switch handle again,soon the rail switch locks in the position.

这样，通过道岔电锁器的接点给信号电锁器的电磁线圈送电流，只有道岔位置正确才使电路接通，信号电锁器有足够电流，即准许扳动信号握柄使信号机开放后，由信号电锁器的接点给道岔电锁器电磁线圈送电的电路被断开，于是再不能扳动道岔握柄，即将道岔锁在规定位置上。

The single a machine that should design to adopt serieses MCS-51s primarily conduct and actions main a measurement for, passing spreading feeling machine to the current of air measuring, its change is homologous pulse signal, this pulse signal through A/ D conversion with D/ A conversion after produce the certain electric voltage signal, will show the inceptive pulse signal a discharge for representing to come out at the same time.

而主要注重对其流量的检测并加以显示。该设计主要采用了MCS-51系列的单片机作为主要的芯片，通过传感器对燃气流量的测定，将其转变为相应的脉冲信号，这个脉冲信号经过A/D转换和D/A转化之后产生一定的电压信号，同时会将起初的脉冲信号所代表的流量显示出来。

The co-channel interference rejection filter for outputting a second input signal by removing co-channel interference from a first input signal; a first post processor for removing interference other than co-channel interference from the second input signal; a second post processor for removing interference other than co-channel interference from the first input signal; and a selection controller for selecting the output of the post processor which has less error by comparing the output of the first post processor with the output of the second post processor.

一种共道干扰消除器及其方法，其中抗共道干扰滤波器从第一输入信号中除去共道干扰并输出第二输入信号，第一后置处理器除去第二输入信号中的非共道干扰，第二后置处理器除去第一输入信号中的非共道干扰，选择控制器比较第一后置处理器和第二后置处理器的输出，从中选择误差较小的后置处理器输出。

The signal frequency received by the antenna is very high, normally it can exceed one GHz. Usually the sample card can not collect so high frequency signal, and it is not necessary to collect the total signal because what we need is the peak value of the signal, and then to know the severe degree of the PD of Transformer relatively .

天线接收的超高频信号频率很高，可达到上G，要采集此信号对采集卡要求太高，而且完整地采集如此高频的信号意义也不大，我们需要的是超高频信号的峰值特征，从而了解变压器内部局部放电的相对严重程度。

In order to study the influence of delays in right-turn traffic,this paper analyzed the characteristic of right-turn traffic on signal control intersection,on this basis,useing the mentality that the green and the red signal times' right-turn traffic study separately,proposed three models to calculate right-turn traffic delays on signal control intersection,has laid certain foundation for the appraisal of signal control intersection's service level.

为了研究右转车流延误的影响，本文分析了信控交叉口右转车流运行特征，在此基础上，采用将绿灯信号时间和红灯信号时间的右转分别进行研究的思路，提出了计算信控交叉口右转车流延误的三种模型，为评价信控交叉口的服务水平奠定了一定的基础。

It is able to collect the pulse pressure, input impedance of radialis artery signal, finger-point blood volume signal and electrocardiogram Ⅱ signal at the same time or detect each signal alone.

客观记录和描述舌的图像，是中医数字化和信息化的重要组成部分。近年来，随着计算机技术的飞跃发展，利用计算机来处理舌诊内容已成为重要的研究方法。

Salt is good, but if the salt becomes flat and tasteless, with what do you season it?

14：33 盐本是好的，盐若失了味，可用什么叫它再咸呢？

He reiterated that the PLA is an army of the people under the leadership of the Communist Party of China.

他重申，人民解放军是在中国共产党领导下的人民军队。