查询词典 Signal-to-Noise

The measurement systemaccepts the signal of this sensor and then converts the signal tothe sideslips value, which is displayed on the liquid-crystaldisplay at last.

测量系统把传感器传来的频率信号转换成对应的侧滑量，显示在液晶显示器上。

The MAX3815A features three differential data channels, one clock channel, and an LOS (loss-of-signal) output, which automatically squelches the outputs when a clock signal is not present.

MAX3815A具有3个差分数据通道、一个时钟通道，以及一个LOS输出，没有时钟信号时自动关闭输出。

This paper also analyzed the relationship between power efficiency of power amplifier and PAPR, and deduced the closed form formulation of power allocation between superimposing pilot signal and data signal.

在考虑功率放大器转化效率的前提下，分析了功率转化效率与峰均功率比之间的关系，推导了叠加的导频信号与数据信号功率分配的闭环表达关系式。

I production and management company of products: water spray nozzle, signal butterfly valves, valve wet alarm, fire pumps engagement, fire hose reel, fire hoses, the use of joint-fire pumps, manual alarm button, fire zone, signal Valve, flow meters and other products.

我公司生产经营的产品：洒水喷头、信号蝶阀、湿式报警阀、消防水泵接合器、消防软管卷盘、消防软管、多用型消防水泵接合器、手动报警按钮、消防水带、信号闸阀、水流指示器等产品。

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 wavelet analysis is internationally recognized signal acquisition and processing of information in the high-tech field and it is the multi-disciplinary attention hot spot and signal processing front topic.

小波分析是目前国际上公认的信号信息获取与处理领域的高新技术，是多学科关注的热点，是信号处理的前沿课题。

Attention: No signal. Check input signal connection or power save mode has been enabled.

请注意：无信号，请检查输入信号连接，或者检查节能模式是否已被开启。

In the bio-electric signal mode, SNR is 50dB, effective number of bits is 10-bit; in the bio-image signal mode SNR is 50dB, ENOB is 8-bit. It has been fabricated by TSMC 0.18 ?慆 CMOS 1P6M standard process.

且使用低电压源1.5V的电压供应，最后结果为在生理电讯号的模式时，SNDR为60dB，ENOB为10-bit；在生理影像讯号模式时，SNR为50dB，ENOB为8-bit。

Ohms radiating coaxial cable is mainly used in tunnel.mine,subway,high building and high way where there is no direct or good radio wave as signal transmission and transmitting and receiving antennas duplex functions,The cables is characterized with low attenuation,lowVSWR,high power capacity,good signal coupling and corrosion resistance.

50欧姆漏泄同轴电缆主要用于隧道、矿井、地铁、大型建筑内及高速公路、铁路等场合无线电波不能直接传播或传播不良的特殊环境内，兼有信号传输线的发送、接收天线的双重功能。具有衰减低、驻波比低、功率容量高，信号耦合性能优良，抗腐蚀性好等特点。

A design and implementation method of the high speed modulation system, which adopted the new techniques of the FPGA and DAC based communication system,is presented in this paper. The effect of the key techniques of this system, such as the high speed digital signal processing for modulation, high speed based-band signal conversion, wide-band modulation, carrier suppression, high frequency and high precision system clock generation, is analyzed, and the solutions and performance analysis is also given. Finally, a high speed modulation system for space applications is implemented, can be used for high speed data transmission with QPSK, 8PSK, QAM or other kinds of digital modulation.

本论文依据正交调制原理，采用基于FPGA和DAC的设计技术，提出了一种高速、灵活的调制系统的设计方法，重点分析了系统组成的调制编码映射、基带脉冲信号转换、信号滤波、调制、系统时钟产生等关键技术环节的影响，解决了高速调制信号处理、高速数据转换、宽带调制、载波抑制、高频率高精度系统时钟的产生等关键技术问题，完成了一种适用于空间应用的高传输速率、多进制数字调制方式和调制体制灵活的数据传输调制系统的设计与实现，可在硬件设计不变的情况下，实现QPSK、8PSK和16QAM等多种调制方式的高速数据传输，QPSK调制速率达到500Mbps。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。