数字信号处理

A high performance digital IF radar receiver which uses IF echo and COHO joint process algorithm, field sampling, field processing and remote transmission is introduced. Its performance can meet the requirements of modern high performance radar system.

采用中频回波和中频相参信号联合相干处理，现场采样，现场处理，远程传输的体系结构实现了高性能数字中频雷达接收机，其性能可以满足现代高性能雷达系统的需要。

Combined the NI PXI-5124 digitizer with the principle of digital quartered demodulation,the software demodulates the dispersed signal efficiently while showing the results perspicuously.

结合NIPXI-5124数据采集卡及数字正交解调的基本原理，该软件可实现对离散化的数字调制信号进行解调分析，同时直观地显示处理结果。

In order to adapt orthogonal digital video signal processing,it adopts orthogonal processing technology,advanced methods of range error extraction,high accuracy range quantization error and high-speed code complement counter etc.

为了适应正交数字视频信号的处理，采用了正交处理技术、先进的距离误差提取方法、高精度距离量化误差及高速反码计数器等新技术

The future development trend is except high-end DTVs with more than 37 inches in size, the other sizes of TV will all adopt highly integrated single chip design, which integrates signal demodulator chip, video-control chip, MPEG-2 decode chip, video processing chip, HDMI interface chip and audio frequency processing chip into a single chip, namely SoC.

而未来的发展趋势是除高级的超过37英寸的数字电视外，其余尺寸的电视都会采用高度集成的单芯片设计，信号解调芯片、视频控制芯片、MPEG-2解码芯片、视频处理芯片、HDMI接口芯片和音频处理都会集成在一片芯片上。

Currently, digital TV mainly has about seven chips, like Signal demodulator chip, video-control chip, MPEG-2 decode chip, video processing chip, HDMI interface chip, audio frequency treatment chip and audio frequency amplification chip.

目前数字电视里主要芯片有信号解调芯片、视频控制芯片、MPEG-2解码芯片、视频处理芯片、HDMI接口芯片、音频处理与音频放大芯片，也就是大约7片IC。

The structural of mechanism adopted double pipes feed-in with mixing machine, special weighbridge for reducing bond; The hardware circuit make use of the programmable amplifier AD8555 which amplify the weak sensor signal and bridge imbalance compensation and gain error, at the same time,32-bit microprocessor LPC2134 was used as the core of the hardware to deal with the messages and send order to the implement machine. Software design transmits materiel by stages and FIR filter was adopted to remove big errors and enhance precision.

机械结构使用双管螺旋喂料机加搅拌机构，特殊的称斗结构；硬件电路采用数字可编程放大器AD8555作为称重传感器微弱电信号的放大器，以便于补偿桥式传感器的失调和增益误差，同时采用32位单片微处理器LPC2134作为整个电路的处理核心，及时处理称重信息，并向执行机构发送命令；软件根据称重值采取分阶段喂料，并加入了FIR软件滤波，滤除了粗大误差信号，提高了称重精度。

This article introduces the hardware structure and the software design of a digital video mixer ,which controls the digital video mix processing chip by the PIC single chip microcomputer intermitting technique.

介绍了一种利用P IC单片机中断技术来控制数字视频混合处理芯片，实现将2路或多路数字视频信号混合成1路或多路输出的数字视频混合器的硬件构成和软件设计。

The photoelectric detector changes the optical signal after receiving the electric signal, and then produces the binary code through A/D converter. The computer make the fuzzy deal according to the data; Finally, the computer sending out the orders of going forward or backwards shiftily, opening or closing the machine.

光电器件接收到光信号后转换成模拟电压信号，经A/D转换后产生二进制数字量，由微机读入后结合该值变化速率进行模糊处理，最后发出变速前进、变速后退及开机、关机命令，从而控制印刷品或制袋的运动及变速偏移，使彩色套印或分切制袋能准确正常地进行。

In a lot of numbers communication system, processing system debugs level, need high speed, real time signal source will provide front signal.

梗概： 在许多数字通信系统、处理系统调试阶段，需要高速、实时的信号源来提供前端信号。

In this paper, the authors analyse and deduce the CCD image digitizers , DSP processor, communications interface and a method of asychronous communications.

提出了一种基于DSP的CCD信号高速数据采集与处理系统的设计方案，对其中的高速 CCD信号数字转换器、DSP控制以及数据通讯接口等内容进行了讨论，提出了更为有效的异步控制方式。

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。