数字信号

Because of the traditional method of using digital frequency memorizer is inapplicable to wideband SAR jamming, the jamming theory based on the leading of parameters and narrowband signals pieceing together technology on wideband jamming realization is researched .

由于传统的数字储频转发式的干扰方式不适合宽带信号，该文研究了参数引导的宽带类杂波干扰产生机理和窄带拼接的宽带干扰信号实现方法。

The invented parts can be optical logic operation and can form other all optical parts, such as: monostable flip-flop, optical modulator in optical signal control and optical switch in optical signal control etc. Said parts can be used in optical fiber communication system with wave division multiplex, all optical communication network or optical computer.

本发明可以进行光数字逻辑运算还可构成光的单稳态触发器、光信号控制的光调制器、光信号控制的光开关等全光器件，可应用于波分复用光纤通信系统，全光通信网络以及光计算机中。

The content mostly refers to signal pre-processing and post-processing, signal synchronization, digital multiplexer, and system integration.

主要包括的相关内容有：信号的预处理与后续处理，信号同步，数字复接，以及系统合成等内容。

The few word processing module from AT89S52, TVIA5715, the SAA7113 constitution, first the video semaphore digitize, then the conversion becomes the RGB semaphore output of the non-interlaced.

数字处理模块由AT89S52、TVIA5715、SAA7113组成，先将视频信号数字化，再转化成为逐行的RGB信号输出。

We researched the pre-processing algorithm of mapping signal: A comb filter was designed according to the property of the electromagnetic environment in operation room and the spectrum of EPM signal The Zero-Phase property has been achieved by using bi-direction IIR filter during off-line data processing.

研究了心外膜标测信号预处理算法：针对在手术室环境下电磁干扰强的特点和除极信号频谱分析的结果，设计了梳状数字滤波器，利用数据离线分析的特点进行双向IIR滤波，在减少计算量的同时实现了零相位特性。

The sensor's signals in flowmeter are processed digitally by means of the power spectrum analyzing method based on the periodogram spectrum method. The real frequency of signal is calculated, and the accurate volumetric flow is measured.

它采用周期图谱分析方法对涡街流量计中传感器的信号进行数字处理，准确计算出信号的频率，测出准确的体积流量。

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。

Using a combination of fiber array,electron-multiplier phototube and digital oscilloscope for recording a comb fringe signal,the velocimeter was capable of 1 ns time resolution and 86 μm spatial resolution.

系统采用梳状干涉条纹做为信号载体，利用1维光纤阵列＋光电倍增管＋数字示波器替代变像管扫描相机作为记录设备，记录伪推挽四路干涉信号，实现1 ns时间分辨和86 μm空间分辨。

A DTMF signal consists of a sum of two tones with frequencies taken from 8 preassigned frequencies.

其 DTMF 信号的8个频率，每对音频信号表示1个数字或符号。

Based on the technique of radiate temperature measurement, the author designs a circuit of prismatic decomposition colorimetric radiate temperature measuring. A high resolution A/D converter and measurement range switch technology are adopted to resolve the problem that it has lower radiation power and lower signal sensitivity in the low-temperature stage, while higher signal amplitude and higher need of dynamic range in the high-temperature stage. The technique of the Black Body Furnace demarcates, digital calibration and the quartic curve fitting are applied to correct the sensor and improve its measurement precision.

3研究了辐射温度测量技术，设计了棱镜分光比色辐射温度测量电路，使用高分辨率A／D转换器和量程切换技术解决低温段辐射能量小、信号灵敏度低，而高温段信号幅值大，动态范围要求高的矛盾，应用黑体炉标定技术和数字校准方法以及4次拟合校正技术提高温度测量精度。

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。