13%的尼日利亚人现在通过手机收听调频广播节目,在拉各斯市,通过手机收听调频节目的听众更达到23%。
Listening to FM via mobile phone is already happening among 13% of Nigerians, though in Lagos this climbs to 23% who listen to FM radio on mobile devices.
但是很多对于专利的争议,以及美国的收音机公司对此的阻挠(他们认为调频收音机的发明会毁了调频广播)使之前的进步趋于停滞。
However numerous patent disputes, and a blocking attempt by the radio Corporation of America, who thought it would destroy AM radio, halted its advancement.
谁如果错过了当地的首都调频和金色调频可以选择在互联网上收听。
Locals who are going to miss Capital FM and Capital Gold can opt to listen on the Internet.
本文提出的一些调频加网质量控制方法,总结的一些工艺特点可以作为调频加网应用于实践的参考。
Some quality control method and some craft characteristics summarized that this text puts forward can be applied to practice as consultation.
本文提出一种新型的高效激光调频方法——自注入调频放大原理。
We suggest a new efficient method of laser tuning: the principle of tuning and amplification by self-injection.
研究表明,采用伪随机函数,对分色后的图象文件进行调频加网,再经现有的调幅加网RIP,可实现图象的调频加网输出;
Research results show that by using the pseudo random function and RIP for AM screening, the image of separate color can be input in the form of FM screening.
在线性调频连续波雷达中,距离分辨力由线性调频信号的带宽和线性度等决定。
In linear frequency modulated continuous wave (LFM-CW) radar the range resolution is determined by signal bandwidth and linearity.
线性调频连续波(LFMCW)雷达生命探测技术是生命探测技术与线性调频连续波雷达技术的有机结合。
LFMCW(Iinear Frequecy Modulated Continuous Wave) radar life detection technique is an organic combination of the vital signs monitoring techniques and the LFMCW radar techniques.
研究非线性调频信号波形设计方法。依据相位逗留原理,采用动态优选法,给出了一种改进的非线性调频信号波形设计方法。
To study the method of designing nonlinear frequency modulation (NLFM) signal waveform, the dynamic selection method was adopted on the basis of phase stationary theory.
分析了调频定距引信中采用变容二极管直接调频时调制的非线性及其对定距精度的影响。
Gives an analysis on the non linearity in frequency modulation when a varactor modulates directly in a FM ranging fuze, and shows its influence on the precision of ranging.
对线性调频(LFM)信号的三种主要数字产生方法进行分析,提出一种基于波形存储直读法的超宽带线性调频脉冲压缩信号数字产生系统方案。
On the basis of the waveform storage method, a digital generation system scheme for ultra wide-band LFM pulse compression signals is proposed in this paper.
根据信号类型的定义,给出了正弦信号、线性调频信号、V型调频信号、白噪声、混响和回波信号的合成公式。
The arithmetic formulas for sine wave, linear frequency modulation signal, V-style frequency modulation signal, white noise signal, reverberation signal and echo signal are given by their definition.
介绍了锁相调频的基本原理,用锁相调频的射频直接调制方法实现了脉冲信号的低抖动传输。
The low jitter transmission of pulse signals is realized by direct RF-modulation based on PLL frequency modulation.
线性调频连续波雷达对于匀速运动目标的回波经过混频以后还是一个线性调频信号(LFM)。
The received signal from target of linear frequency-modulated continues wave (LFMCW) radar is a linear frequency-modulated (LFM) signal.
如果有两个支持调频广播的调谐器,请确保每个调谐器都已连接到各自的调频广播信号源。
If you have two tuners that support FM radio, be sure each tuner is connected to its own FM radio signal source.
所以呢,一条单一的调频波段只有几米长,差不多就一辆车的大小。中波波段比调频波段长几百米呢!
As a result, a single radio wave from an FM station is only a few meters long, about the size of a car. An AM station is putting out radio waves that are hundreds of times as long!
线性调频连续波(FMCW)信号的线性度是衡量线性调频源质量的一个重要指标,在雷达测距系统中,它决定着雷达的距离分辨率。
The linearity of the FMCW signal is an important index to appraise the frequency modulated source. It determines the radar range resolution in the system of radar range.
首先对脉冲压缩和线性调频脉冲信号进行了介绍,然后研究了线性调频信号的压缩过程及其压缩方法。
After the introduction of the pulse compression and the LFM, the paper studies the procession of the LFM pulse compression and the methods of it.
阐述了索引色与调频加网在网版印刷中的应用,以及在调频加网印刷中如何减少龟纹的出现。
It specifies the application of index color and FM technology in screen printing, and how to reduce moir sin screen printing with FM technology.
中国部分省市电网目前正在分批开展发电机组的一次调频试验工作,实现水轮发电机组一次调频功能的主体是水轮机微机调速器。
The microcomputer-based hydro-turbine governor is the principal part for the realization of primary frequency regulation for a hydraulic turbine generator unit.
受限于DDS芯片的调频转换速率,在大带宽下,DDS产生的线性调频信号相比理论信号可能存在频率失真。
Compared to the theory signal, the chirp produced by DDS under large bandwidth, may have frequency distortion due to the limited chirp-rate.
介绍了目前电调型带基本负荷汽轮机的一次调频转差与调频负荷关系曲线的设置情况。
The setting is introduced on the relationship between primary frequency modulation speed difference and primary frequency modulation load for current modulated type steam turbines with base-load.
通过比较分析几种汽轮机调节系统的一次调频动态特性,证明采用一次调频动态特性概念可以本质、全面地反映汽轮机调节系统的一次调频特性。
Through the analysis of several kind of turbo-generator control system, the new concept is proved to be an overall description of primary frequency regulation.
基于中国余数定理解频率模糊和解线调方法,提出一种无模糊欠采样的宽带线性调频信号的调频斜率和初始频率的估计算法。
Based on the remainder theorem and direct dechirp operation, an algorithm for estimation of chirp rate and initial frequency of the subsampling wideband LFM signal unambiguously is presented.
由一次调频决定的电网静态调频特性,则是电网频率稳定性的基础。
The static frequency modulation characteristic of electric network is the foundation of frequency stability of the electric network that determined by frequency modulation.
干扰信号可以是调频电话信号、调频电视信号或脉冲雷达信号。
The RF signal may be a FM telephone signal, a FM television signal or an impulse radar signal.
根据调频函数模型,提出利用数据拟合的方法设计非线性调频信号。
According to the frequency modulation function mode, this paper proposes to design the nonlinear frequency modulation (NLFM) signal using the data fitting method.
基于线性调频信号、正切调频信号对脉冲压缩系统进行了仿真,并分析得到了有意义的结果。
The simulation, resulted from the pulse compression system with linear FM and Tangent FM signals, is presented and analysed for the useful conclusions in this paper.
利用了调幅、调频加网各自的优势,改善了调幅与调频半色调之间的过渡,实现了在较低分辨率的设备上得出高精度的输出图像。
The algorithm efficiently improves the transition area between AM and FM halftoning. Besides, the precision of the output image was realized on low precision equipment.
利用了调幅、调频加网各自的优势,改善了调幅与调频半色调之间的过渡,实现了在较低分辨率的设备上得出高精度的输出图像。
The algorithm efficiently improves the transition area between AM and FM halftoning. Besides, the precision of the output image was realized on low precision equipment.
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