查询词典 digital signal

The non-reference-signal's adaptive digital filter algorithm of multi-sensor data fusion in the course of adaptive filter can be done without reference signals. It can adjust convergence constant automatically, it can also be recurred with real gradient value. Thus the field to apply the adaptive filter is widened, the convergence speed of the adaptive filter is sped up, the weighted disadjustmend is decreased, so that the last error of mean square approaches its minimum value more.

这章研究的基于多传感器数据融合无参考信号的自适应数字滤波算法其在自适应滤波过程中具有不用参考信号与自动调整收敛因子及使用实际梯度值进行递推的特点，这样不仅可扩大自适应滤波的使用范围，而且还使自适应滤波的收敛速度加快有效地减小权失调，从而使最后的均方误差更接近于其最小值。

It have programmable memorizer in which some operation instructions such as logic operation, sequence operation, timing, counting is saved and runs, and then it can control kinds of mechanism and process through input and output of digital or analog signal.

它采用可以编制程序的存储器，用来在其内部存储执行逻辑运算、顺序运算、计时、计数和算术运算等操作指令，并能通过数字式或模拟式的输入输出，控制各种类型的机械或生产过程。

Auditory Brainstem Response, ABR (or Brainstem Auditory Evoked Potentials, BAEP) is a human body physiology parameter at microvolt level. First, we use the TMS320F2812 of TI company, making the signal through D/A transform and high accuracy operational amplifier, and produce the masking white noises, as well as the Tone Burst to be the stimulus. Then, the evoked EEG will be amplified and filtered. At the same time, we use the A/D of TMS320F2812 to collect and process the signals, and get the digital BAEP.

听觉脑干诱发电位(Auditory Brainstem Response，ABR)为微伏级人体生理参量，采用TI公司的DSP TMS320F2812，通过D/A与高精度运算放大器，生成听力级可调整的掩蔽白噪声与短纯音TB进行刺激，同时对诱发脑电进行放大、滤波、并使用TMS320F2812的A/D进行信号采集与处理，得到数字化的脑干诱发电信号。

The system designed to break the traditional model, First of all, the measurement of the resistivity of components using parameters R consisting of 555 timer Multivibrator transformed into a frequency signal f, Then after counting SCM operations of the resistance R calculated, the final delivery of digital display circuit, the implementation of intelligent measurement.

该系统打破传统的设计模式，首先把要测量的电阻元件的参数R利用555定时器构成的多谐振荡器转换成频率信号f，然后用单片机计数后再运算求出R的阻值，最后送数码显示电路，实现了智能化测量。

Mainly deal with development and production of main diesel engine computer remote control pneumatic remote control electromechanical pneumatic remote control device engine roommouldilization "CAN" sit general circuit atandard communication computer alarm system fogwhistle controller Navigation light signal light controller pressure type liquid level gauge alarmdevice and steal belt type of ray communication level gauge digital display temperature pressure gauge with ray indication and pressure transducer.

上海利智船舶自动化设备技术有限公司是一家集科工贸为一体的高科技公司，主要从事开发，生产，主柴油机的微机遥控；气动遥控；机电气动遥控装置：机舱模块化CAN现场总线制通讯微机报警系统，主机测速装置；雾笛控制器；航行灯、信号灯控制器；压力型液位测量报警装置及测量钢带式光通讯液位仪；数字显示带光指示的温度，压力表及压力变送器等。

The preliminary chromatogram data were resolved with Mallat algorithm of wavelet analysis theory. This method that resetting the high frequency signals, reconstructing low frequency and then correcting the background signals in the original signal was to avoid the data skewness with negative digital points after background correction and achieve the baseline correction; according to the study and analysis of simulated data including curve background and real data of the needle-plate and free metal partials insulation defects, the method is effective; the best wavelet function of the background correction is Db5 and the best resolution times of the background correction is 8 for chromatogram data of SF_6 decomposition products, based on the calculation with different wavelet functions and resolution times.

在初步获取的气相色谱数据基础上，运用小波分析技术中的Mallat算法对色谱数据进行小波分解，采取将高频信号置零，重构低频背景信号，再用原始信号扣除背景信号的方法，并对背景信号进行纵向平移以避免扣除后出现负数据点造成色谱峰失真的题目及达到色谱图基线校正的目的；通过对含曲线背景信号的模拟色谱数据和针-板、自由金属微粒缺陷下的真实数据的计算研究表明，该方法的应用是有效的；并通过对不用小波函数和不同分解次数的背景扣除计算，确定了SF_6气体放电分解组分色谱背景扣除所选用的最佳小波函数为Db5小波和最佳分解次数为8次。

Indeed, because of output digital stability, the hopfield neural converter can allow for unwanted analog-input-signal noisiness or variations.

这个情形与传统模拟传输媒介和数字计算装置之间的接口电路形成了强烈的对比。

Based on the numerical signal of the quadrature transformation theories, get the general quadrature model for demodem, at the same time, this text makes the discussion about five kinds of signals to digital.

从数字信号的正交变换理论出发，得出了通用正交解调模型，并以此为基础，推出节省硬件运算量的软件下变频算法，并进行了设计与仿真。

In chapter five, the base band signal process of CDMA base station simulator system is introduced, including channel coding and decoding, interleave and disinterleave, PN sequence generator, orthogonal spread spectrum and quadrature Spreading, scrambling code, power control, digital forming filter, the capture and track of PN code, dispreading and demodulation, etc. Some FPGA design graphic and waveform simulation of base band transmitter module is given and realization algorithm of base band receiver is discussed in detail.

第五章介绍了CDMA基站仿真系统的基带信号处理过程，包括信道编译码、交织与去交织、PN码发生器、正交扩频与四相扩频、扰码、功率控制、数字成形滤波器、PN码的捕获与跟踪、解扩与解调等，并给出了基带发射机模块的部分FPGA设计原理图和波形仿真，详细论述了基带接收机模块的实现算法。

But the trigger display function of the digital oscillograph to acquisition signal can only achieved through software programming.

虚拟仪器技术的提出与发展标志着自动测试与电子测量仪器领域技术发展的一个重要方向。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。