电平信号

将PWM波和IGBT开关电平信号同时加在与门输入端，可斩波控制逆变器的输出电压。

When PWM wave and IGBT switch level signal was loaded into input-end of and-gate at the same time , output voltage of inverter is controlled in chopped wave .

最后，讨论了频谱仪本地噪声对低电平信号测量影响的修正方法。

At last , correction method of low level signal measurement is discussed duo to effect of spectrum analyzer floor noise .

最终用ASE光源谱特性解调方案将AC电流形成的光纤光栅波长漂移解调成电平信号。

ASE correlation method was used demodulated the AC current generated wavelength shift finally .

模拟发控台完成导弹27V电平信号与火控模拟计算机TTL电平信号间的隔离与转换。

The fire control simulation console converted 27V electrical signal into TTL electrical signal .

根据光复用技术的基本思想，研制了一种新型复合光Modem，这种光Modem除了正常的通信功能外，相邻Modem间还能快速传送电平信号（小于100μs）。

According to the basic idea of optical multiplexing technology a new type of composite optical Modem is developed , besides ordinary communication , the Boolean signal can be rapidly transmitted among adjacent Modems ( less than 100 microseconds ) .

对多载波PWM控制方法进行简化，采用两个相位相反的三角载波得到3电平信号，经过解耦处理，得到了一种适合于该拓扑的5电平PWM开关控制策略，并进行了仿真验证。

By simplifying the multicarrier PWM technology , two triangular-carriers out of phase are used to generate 3-level signals , after being decoupled , a kind of 5-level PWM control strategy suited for this topology is obtained and is also testified by simulations .

所设计的从机接口的功能是，按要求发送、接收数据，并将终端仪表的数字信号转化成M-BUS电平信号。

Meanwhile , the function of slave interface is to convert the data from terminal units into M-bus pulse signal according configuration of pulse increment and unit of different terminal instruments .

此外，其隔离受半导体器件漏流的限制，并且对低电平信号具有较高的插入损耗。

Also , their isolation is limited by the leakage currents of the semiconductor devices , and they have a high insertion loss for low level signals .

第二部分介绍了当存在相对高的测量系统噪声（示波器噪声）电平时，如何进行更精确低电平信号噪声和干扰测量的有用提示。

The second part is to introduce the useful prompt to measure the low level signal noise and its disturbance even more accurately when there is rather high noise level in measure system .

研究了极化电平信号的特性及相应的噪声处理方案，针对两轴稳定跟踪的不足，提出了基于信号最佳电平的自动跟踪方案。

The characteristic of the polarization signal is studied here and the corresponding noise process method is proposed . Aiming at the limitation of two-axis stabilization and auto track , the optimized signal tracking scheme is proposed .

基本实现方案为：待监测大功率信号经宽带定向耦合器耦合输出为弱信号后，通过检波转变成电平信号，再对电平信号进行采集显示。

The system scheme is : a high power signal is coupled to a weak signal through broadband directional coupler , and then the weak signal is converted into a low-frequency voltage signal . At last , the voltage signal is collected and displayed .

多电平DSSS信号的盲检测

Blind detection of multilevel DSSS signal

多功能芯片ADT14既是一种输出逻辑电平控制信号的多点温度监控器，又是一种输出模拟电压信号的温度传感器，可广泛应用于各种嵌入控制系统中。

The multi-functional chip ADT14 is a kind of multi-point temperature monitor of outputting logic level control signal , It is also a kind of temperature sensor of outputting simulated voltage signal .

一种适于多电平调制信号均衡的神经网络

A neural network model suited for multi level modulated signal equalization

结果给出了实际电路中不同电平高频信号的软件仿真结果。

Results A simulation result of the high speed signals was given .

纠错码与多电平调制信号矢量点的一种最佳映射方法

An Optimal Mapping Method of Error-Correcting Code and Multi-Level Modulation Signal Vector Points

一个规定的高电平电压信号加到一个输入端时，流进该输入端的电流。

JEDEC ? The current into an input terminal when a specified high-level voltage is applied to that input .

微材料力学性能测试是微机电系统设计制造过程中的重要环节，需要对低电平微弱信号进行高精度测量。

Micro material mechanical performance test is a fundamentality of design and manufacture for MEMS , high-accuracy measurement of weak signal is needed .

无线测量集中在移动台与基站之间，主要测量信号电平、信号质量、定时提前量等等。

Wireless measurements occur between MS and BTS and the major measurement parameters include signal level , signal quality , time advance and so on .

有效地校正由上述因素产生的误差以获得良好的天线副瓣电平和信号处理能力，一直是人们着重研究的课题。

It is always an important problem to effectively correct the errors due to the above mentioned reasons to achieve excellent antenna sidelobe level and signal processing capability .

本文介绍的调制器是利用非线性网络，使控制电平和信号电平接近线性，因而改善了数字式压伸增量调制器的动态范围。

This paper describes a coder using a nonlinear network in which the relationship between the control level of the pulse amplitude modulator and the signal level is approximately linear .

但是随着信号星座复杂度增加，不同电平的信号对于代价函数所产生的权重影响不同，搜索容易陷入低电平信号（例如？1）构成的局部最小点。

With the increased complexity of signal constellation , different levels of the signals produce different effect for the weights of the cost function . The algorithms will be easily trapped in local minima .

在电话信号低数码率传输时，若使用数字式压伸增量调制器，由于脉冲调幅器控制电平和信号电平的非线性特性，调制器的动态范围受到一定限制。

The dynamic range of a digital companded delta codec for transmitting voice signals in a lower bit rate is confined within the limit of linearity between the control level of the pulse amplitude modulator and the signal level .

提出利用采集卡采集的数据对远动通道中的信号进行频率测量的方法，实现了对远动信号的时域波形、信号电平及信号频率的全面监控。

A method for measuring the frequency of a remote channel signal is presented by utilizing the data collected by data acquisition board . The integrated monitoring of the time-domain waveform , the signal level and the frequency of a remote signal are realized .

本文以移动载体卫星通信、电视接收系统为对象，主要研究了电平强度信号的获取方法与应用、天线的动态初始对准技术以及跟踪过程中的动态搜索问题。

With the object of moving carrier satellite communication TV receiving system , this paper study chiefly the approach and application of power level strength signal , the initial alignment technology of moving antenna and the problem about dynamic search in the tracking process .

接着本文提出了详细的卫星信号状态计算方法，包括可见卫星预报、信号电平、信号的相位、多普勒频率和多路径信号。

Then , the paper describes the simulating method of the GPS signal , including the prediction of the visible satellite , the level of the received satellite signal , the phase of the received satellite signal , Doppler frequency drift and the signal delay due to multi-path effects .

在MIMOOTHR信号模型的基础上，对MIMOOTHR信号处理进行了详细推导。（2）具有良好的自相关性能和低的互相关电平的正交信号是MIMO技术应用的关键。

Based on MIMO OTHR signal model , the signal processing of MIMO OTHR is presented in detail . ( 2 ) Orthogonal waveform set with satisfactory property of auto-correlation and low level of cross-correlation is crucial for MIMO architecture application .

所以，有时候需要把三电平的同步信号转换为双电平的同步信号。

Therefore , the need exists to convert from tri-level to bi-level sync on occasion .

该系统利用网络化设计，采用频谱模板比对、卫星信标电平校准、信号模式识别、卫星遥测信号提取等技术，提高了卫星干扰监测的准确度和自动化程度；

The system adopts comparison of spectrum template , calibration of beaconing , mode identification , telemetering pick-up technology and improve the inspection technology of satellite interference .

分析了几种获得电平扫描参考信号的方法，最终选择了从数字卫星接收机中直接取出电平强度信号的方法，为初始对准和动态搜索的实现奠定了基础。

Analyse some approachs of obtaining power level scan reference signal , and finally select the approach of taking power level strength signal out of digital receiver , which establish the basis for initial alignment and dynamic search .