The characteristics of spectrum linewidth, FM modulation and variability of wavelength are presented.
并对频谱线宽、FM调制特性和波长可变特性作了介绍。
A numerical model for steady state analysis and analytical expressions for the AM and FM modulation responses of DFB lasers are presented.
给出了适于分析DF B激光器稳态特性的数值模型和分析振幅及频率调制响应特性的解析模型。
In this paper, we start from the energy point of view, use AM-FM modulation model and formant frequency, to remove the vocalic interference which vast majority of energy in the useful speech.
本文从能量角度入手，利用调频-调幅模型和共振峰特征，滤除混叠在有用语音中的含绝大部分能量的元音干扰。
Merits of the Linear FM are that it is not necessary to have an equalizer or the spread spectrum code modulation.
线性调频调制的优点是：不须在接收端添加均衡滤波器，也不须进行扩频编码。
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.
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。
Another method to reduce the BER of the DSCK system is the FM-DCSK modulation.
减小dcsk系统输出方差的另一种方法是引入了FM - DCSK复合调制。
Realize signal modulation and demodulation functions, including various types of modulation such as ASK (amplitude modulation), PSK (phase modulation), FSK (FM).
实现信号的调制解调功能，包括各类调制如ask(调幅)，PSK(调相)，FSK(调频)。
The features of pseudo code PM-carrier FM combined signal include the pseudo code and the modulation frequency.
伪码调相-载波调频复合信号的识别特征包括伪码特征和频率调制特征。
Frequency modulation(FM): the form of modulation in which the frequency of the carrier is varied in accordance with the instantaneous value of the modulating signal.
频率调制：载波的频率依照调校讯号的瞬时值而改变的一种调制。
Two kinds of typical wideband signal, Frequency Modulation (FM) signal and Frequency Spread signal, is analyzed qualitatively with wideband Ambiguity Function.
以宽带模糊度函数为工具定性地分析了两类典型宽带信号，即调频信号和频率分集信号。
Noise frequency modulation (FM) jamming, which belongs to blanket jamming, is already become the main form of noise jamming at present, because the wideband was gained by it.
噪声调频干扰属于压制式干扰，由于它容易达到宽的干扰带宽，已经成了目前噪声干扰的主要形式。
In frequently used methods, sine wave is used as carrier with amplitude modulation (am), frequency modulation (FM) and phase modulation (PM) implied.
常用的调制方式使用正弦波作为载波并对其进行幅度调制(AM)和角度调制即调频(FM)或调相(PM)。
A new algorithm of analysing FM (frequency modulation) interferogram is described. Compared with the Fourier method, it is time saving and suitable for real-time calculation.
本文提出一种无需滤波处理的调频条纹分析算法，该算法与傅里叶技术相比具有省时、便于进行快速、实时位相测量等优点。
The target of the communication system flat is modeling and calculating to modulation and demodulation of seven kinds of signals:AM, FM, SSB, 2ASK, 2FSK, 2PSK, 2QPSK.
通信仿真平台的任务是对调幅、调频、单边带、二进制振幅键控、二进制频移键控、二进制相移键控、正交相移键控等七种通信信号的调制和解调进行建模和计算。
The main target of this thesis is description the de-modulation algorithm of the RDS (Radio Data System) system in FM radio and further research in this topic.
论文主要研究了调频收音机中RDS信号解调算法及其算法的进一步探讨。
At last it discusses the dual-mode transmission technology of the Ultra Narrow Band Modulation and the FM combination.
最后着重讨论了超窄带调制与FM结合的双模式传输技术。
At last it discusses the dual-mode transmission technology of the Ultra Narrow Band Modulation and the FM combination.
最后着重讨论了超窄带调制与FM结合的双模式传输技术。
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