查询词典 digital signal processing

EMG signal analysis software from DASYLab 6.0 rectus femoralis, biceps femoris, tibialis anterior , the gastrocnemius and other muscles of the original EMG signal, the 10-500Hz to the band-pass filter processing, the full-wave rectifier on the turn, rate of 10 Hz low-pass smoothing wave treatment, and then by the integral operation, the available IEMG values, and divided by the integral interval of time, come to the average EMG EMG signal amplitude, and action cycle the largest standardized EMG values.

肌电讯号由DASYLab 6.0软体分析股直肌、股二头肌、胫骨前肌、腓肠肌等肌群之原始肌电讯号后，进行10-500Hz的band-pass滤波处理，经全波整流上翻、10 Hz低通率波平滑化处理，再经积分运算后，可得积分肌电值，并除以积分区间之作用时间，得出肌电讯号的平均肌电振幅，并以动作周期中最大肌电值进行标准化处理。

The experimental results show the two practical algorithms can preserve inaudibility and they are robust enough to against the different signal processing operations. In addition, the watermarking information can be embedded into the original audio signal adaptively, which also doesnt require the use of the original audio signal for detection. Furthermore, it can resist the different attacks, such as lossy compression (MP3), filtering, resampling and requantizing, etc.

仿真实验结果表明，两种方法都具有较强的鲁棒性和不可感知性，水印嵌入容量的自适应性，提取水印时不需要原始音频信号的参与，且对包括MP3有损压缩、低通滤波、重采样/重量化等多种攻击性试验具有较强的稳健性，是可行的数字音频水印算法。

The acquisition of signal and several processing methods for Laser Doppler signal are introduced in chapter 4, and the Short-time Fourier Transfer method are tried to process the high frequency, wide bandwidth, wide dynamic range and nonstable signal of this system.

第四章介绍了对信号的采集和几种常用的多普勒信号处理方法，并根据本系统信号的高频、宽带、大动态范围、非平稳的特点，提出了采用短时傅立叶变化的方法来对信号进行处理，从而得到振动位移的变化情况。

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。

At the same time, using combination of gear and photoelectric switch for the sensors, the signal conditioning box of National Instruments Corporation and data collecting card as the main devices, the signal collecting of torsional vibration was completed. In addition, a software of the fault monitoring and analysis was developed with Visual C++. The signal real time collecting of torsional vibration and processing were realized.

同时，以齿盘和光电开关组合为传感器，NI的信号调理箱、数据采集卡等为主要器件实现了扭振信号采集；并采用Visual C++编程开发了故障监测与分析软件，实现了对扭振信号的实时采集和处理。

Firstly, we simulate the signal received by OTHR according to the real working condition, and then save the signal data in file. Secondly, we develop the signal processing program and the visual users interface. Finally we compare the performance of these two kinds of OTHR system.

本文首先根据OTHR的工作环境模拟其回波信号，并将其保存为数据文件；编写信号处理程序，并给出可视化用户界面；最后利用OTHR仿真系统，对二相编码连续波和线性调频连续波这两种信号体制的OTHR作性能分析。

Firstly, we simulate the signal received by OTHR in each antenna according to the real working condition, and save the signal datum in file. Secondly, we develop the signal processing program and the visual users interface. Thirdly, we utilize the simulation system to analyze Linear Frequency Modulated Continuous Wave OTHR system and Binary Phase-coded Continuous Wave OTHR system. Finally we compare the performance in suppression of interference of these two kinds of OTHR system.We achieve two aims in this simulation system.

本文首先根据OTHR的工作环境模拟OTHR各个阵元接收的回波信号，并将其保存为数据文件；然后根据OTHR的系统结构，编写信号处理程序，并给出可视化用户界面；最后利用OTHR仿真系统，对二相编码连续波和线性调频连续波这两种发射波形的OTHR作抗干扰性能分析。

A research and design of optical signal processing subsystem in PAT system of space optical communication is proposed in this dissertation. The subsystem can extract the image position error signal of beacon beam that supplies the input signal of the latter serving system.

本论文主要是完成空间光通信PAT系统中信标光光信号的处理，得出信标光的像面位置误差信号，为后续伺服控制系统提供输入信号。

The signal processing of the laser target shooting system mainly consists of signal amplification, signal encoding and data transmission.

激光打靶系统的主要信号处理过程包括：信号的放大、编码和数据传输。

Many signal processing algorithms aim at complex signals,so it is important to create complex signal from the bandpass real signal.

许多信号处理算法是针对复信号的，因此，从实带通信号中产生复信号是信号处理中的一个重要问题。

Diabetes is a social disease that affects several million people worldwide.

糖尿病是一个社会性疾病，全世界有数百万人罹患此病。

I'll call you on Friday to see if we can reschedule our luncheon meeting at your convenience.

我星期五会给您打电话在您方便的时候我们重新安排我们的午餐约会。