分别实现了V.29信号基本调制解调过程,包括平方根升余弦滚降脉冲成形技术的滤波器实现,以及对信号的正交调制与解调过程。
Realizes V. 29 signal basic modulate and demodulate procedure which includes square root raised cosine rolling-off shaping filter and orthogonal channel signal modulator and demodulator.
从随机脉位调制脉冲多普勒雷达信号调制角度出发,又引入了具有类随机性的混沌信号作为其基本调制信号,性能与采用随机信号相接近。
From the point of view of the modulation of RPPM, chaotic signal with stochastic characteristics is introduced as its modulation, which has the good performance just like the random signal.
所以,如何选定并提取信号的特征便成为调制识别的基本环节。
Thus, the basic important step of modulation identification is how to specify and extract signal features.
数值模拟显示,利用色散缓变光纤中的调制不稳定性可以产生高重复率的基本孤子脉冲串。
The numerical simulation also shows that fundamental soliton pulses with high repetition rate can be generated in this kind of fiber by modulation instability.
定性地分析了各优化方法调制波的谐波特性,从本质上分析了它们降低开关损耗的基本思想。
The harmonic peculiarity of carrier waves of each optimized method and expresses elementary ideas in methods of decreasing switching dissipation above-mentioned essentially.
本文介绍了空间电压矢量脉宽调制(SVPWM)的基本原理,并应用此原理进行了交流光伏水泵系统的设计。
This paper introduces the basic theory of space-vector PWM (SVPWM), and designs the ac photovoltaic water pump system on the basics of this theory.
调制传递函数是评价红外光学镜头性能的最基本的技术指标之一。
The modulation transfer function(MTF) is one of the fundamental parameters to evaluate the infrared optical lens.
以调制技术为主线,介绍有线电视系统中模拟调制技术、光调制技术和数字调制技术的基本原理。
This paper takes modulation technique as main hint, summarizes the essential principle of analogue modulation technology, optical modulation and digital modulation technology.
最后,提出了一种以交织块为基本单元进行数据调制的系统设计方案。
Lastly, this paper gives a method to modulate fast and accurately by using the interweaver as the basic unit of modulation.
首先研究基本的发射机,包括卷积编码、交织、扰码、沃尔什调制、正交扩频以及基带滤波。
Firstly the basic transmitter, including convolutional encoding, interleaving, scrambling, Walsh modulation, quadrature spreading and baseband filtering was studied.
空间矢量脉宽调制和双向开关多步换流方式是矩阵式变换器的基本控制策略。
Space vector pulse width modulation(SVPWM) and multi-step commutation method of bi-directional switches are the basic control strategies of the matrix converter.
在分析空间矢量调制(SVPWM)基本原理的基础上,证明了SVPWM具有最大的直流电压利用率。
By analyzing the base principle of space vector pulse width modulation (SVPWM), it is proved that the DC voltage utilization.
在分析电压空间矢量调制(SVPWM)基本原理的基础上,证明了SVPWM具有最大的直流电压利用率。
By analyzing the basic principle of voltage space vector pulse width modulation (SVPWM), it is proved that the dc voltage utilization ratio of SVPWM is the highest.
通过简述多种调制方式中频信号数字产生的基本处理方法,提出了一种具体实施方案,并分析了其技术特点。
This paper discusses the digital generation method for communication IF signals and proposes a concrete implementation resolution and analyzes its technical characteristics.
提出一种在负色散区利用交叉相位调制效应压缩基本孤子脉冲的新方法。
In this paper, a new method to compress fundamental soliton pulses in the anomalous dispersion regime through cross phase modulation for pump pulse and soliton pulse is proposed.
本文首先介绍了ALE协议的基本内容,分析了ALE系统的结构和设计思路,然后对8cpfsk信号的调制解调技术、差错控制技术进行了理论研究。
Firstly, ALE system's base content is introduced, then an analysis of ALE system's structure and design is put forward, and then 8cpfsk modulation theory and error control technique are discussed.
重介绍了光纤系统的基本构成,光信号的调制和HFC—光纤同轴混合网。
This paper introduces the basic components of the optical fiber system and the modulation of the optical signals and the HFC-optical fiber coaxial hybrid network.
差分吸收检测和波长调制谐波检测是气体光吸收检测的两种基本方法。
Difference absorption measurement and wavelength modulation harmonic measurement are two fundamental approaches for gas light absorption detection.
本文先介绍了雷达基本工作原理以及调制、匹配滤波、模糊函数等雷达信号分析的相关知识。
Firstly, this thesis introduces correlative information, such as radar theory, modulation, matching filter, ambiguity function, in the domain of processing of radar signals.
分析了信号数字调制的基本原理,提出一种基于信号瞬时特征参数的数字通信信号解调方法。
The principle of digital modulated signal is analyzed in this paper. Based on instant character parameters, a kind of digital communication signal demodulation method is established.
接着,在分析了基本的UWB波形的情况下,研究比较了采用跳时调制不同的数据调制方案。
Then, this dissertation analyses the basic UWB waveform and compares two different data modulation schemes which adopting time-hopping modulation.
在分析滤波多音调制(FMT)的基本原理和优点的基础上,给出了一种基于线性相位FIR滤波器的FMT实现方案,并对该方案的实现复杂度做了讨论。
The basic theory and advantages of filtered multitone modulation (FMT) are studied. An efficient implementation of FMT based on linear-phase FIR filter is proposed and its complexity is discussed.
无线电信号调制识别的基本任务就是对所截获的不明信号的通带调制种类进行分析、判决和归类。
The basic tasks of radio signals modulation identification are analysis, decision and classification of modulation type for intercepted unknown signals.
本文介绍了E类放大器方阵电路PDM调制的基本原理和调制特性。
This paper introduces the fundamental principles and character of PDM modulation of class E amplifier square circuit.
本文介绍了SVPWM技术的基本原理和调制方法。
The basic principle and modulation technique of SVPWM are introduced in the paper.
文章首先详细介绍了接入系统的基本原理和关键技术,包括调制技术、差错控制技术、多址接入技术、嵌入式系统技术。
Firstly, the basic principles and the key techniques of access system is introduced, which includes modulation, error control, multi-address access, and embedded-system techniques.
依据图像恢复技术的要求,高精度成像系统调制传递函数(MTF)是高质量图像恢复的基本条件。
According to the requirement of image restoration technique, high precision modulate transfer function (MTF) of imaging system is the base of high-quality imagery restored.
依据图像恢复技术的要求,高精度成像系统调制传递函数(MTF)是高质量图像恢复的基本条件。
According to the requirement of image restoration technique, high precision modulate transfer function (MTF) of imaging system is the base of high-quality imagery restored.
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