数字信号

Study on digital detection technique of weak echo signals in pulse laser fuzes［J］.

脉冲激光引信微弱回波信号数字检测技术研究［J］。

Digital receiverg development inaugurates new methods in signal interception and recognition.

数字接收机的研制与投入使用，开辟了信号截获识别的新思路。

A measurement scheme is proposed by theoretical analyzing and experiment, which is a mutidiscipline method relating to optics, precision mechanism, electronics, computer science and control technology. In the designing of the controller, a fourfold phase photoelectric battery is used as the photoelectric incepted sensor, an ADuC812 chip is used to sample data and a incomplete numeric differential PID arithmetic is adopted in the control system.

通过理论分析和试验研究，设计了一套涉及光学、精密机械、电子、计算机和自动控制等多学科技术的测量控制方案，建立了以光电池为光斑位置信号检测传感器，采用ADuC812数据采集芯片进行数据采集和不完全微分数字PID控制算法的跟踪测量控制系统，通过跟踪测量实验验证了这种方法的可行性。

This is a highly complex and intercrossing advanced subject, which contains a great deal of knowledge of other subjects, such as mechanics, computer science and engineering, cybernetics and control engineering, electronic engineering, artificial intelligence, signal processing technique, nerve network technique, fuzzy theory and so on.

数字控制系统设计是一门高度综合与交叉的前沿学科，涉及机械学、计算机科学与工程、控制论与控制工程学、电子工程学、人工智能、信号处理技术、传感器技术、神经网络技术、模糊理论等多种学科。

A novel method of direct digital synthesizing frequency sweep signal is presented.

介绍了利用直接数字合成技术产生频率扫描信号的新方法。

It is often seen in fields of telecommunication, Radar, Sonar and telemetering because of scanning, modulation or sampling.

对于通信、雷达、遥测和声纳等系统中的信号，它们大多具有循环平稳特性，即数字特征是时间的周期函数。

Based on the project of Cruise Antenna for Receiving DBS Video Signal, we analyze and design the foreside antenna and the circuit of comparing intensity of signal received f...

本文结合&DBS数字卫星广播移动接收天线&项目，对其前端天线进行了研究与实现，并对天线在载体移动过程中寻星和锁定卫星的关键电路—接收信号幅度比较器进行了研制。

The system has transmitted the digital output signal of video recording part to ARM development board through USB port, and displayed video content through PC.

系统将视频摄像部分的数字输出信号通过USB端口传送至ARM开发板，并将视频内容传回PC显示。

The article through practice analysizes the local wireless broadcasting system, application of the elements and means of communication technology is being updated, A set of half-automatic broadcasting system controlled by hardware has been designed and assembled; A set of all-automatic broadcasting system controlled by computers has been designed and assembled; A set of emission equipment has been designed; Noise has been lowered in the transmission of audio-frequency so that the audio effect has been raised; new ways of audio-frequency transmission have been developed based on the technology of computer network.

本文通过对局域无线广播系统运行现状的分析和研究，运用电子信息技术的基本原理和方法，设计并自行装配了一套由硬件控制的半自动播出系统；研究开发了一套由计算机软件控制的全自动播出系统；设计了发射装置；通过对音频信号的传播环节进行降噪处理来提高收听品质；基于数字音频技术，开辟新的音频传播途径；并对系统功能的拓展进行探讨。

A mode buffer and command block (560) uses the mode signal to control the creation of initial and final digital words created by a data buffer and control block (550) from the digital data sequence.

一个模式缓冲和命令块（560）使用模式信号，控制由一个数据缓冲和控制块（550）从数字数据序列所生成的初始和最后数字字的生成。

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。