提出一种新的用于保密通信的混沌调制和线性解调方法。
A new approach of chaotic modulation and linear demodulation for secure communication is proposed.
混沌通信与保密通信的关键技术是混沌同步和混沌调制。
The key element of technology in chaotic communication and secret communication is chaotic synchronization and chaotic modulation.
提出一种新的用于保密通信的混沌调制和线性解调方法 。
Using this method based on intensity, it can achieve linear demodulation with a bandwidth of 5 nm.
对不同性质混沌调制信号降低电磁干扰水平效果进行了分析。
The effect of chaotic switching modulation signals of different chaotic characters on reducing the level of EMI is analyzed.
论文研究了混沌调制技术在实用开关变换器中抑制电磁干扰的效果。
The effect of EMI suppression of the chaotic modulation schemes is presented in the switching converters.
由于同步误差与信息信号无关,从而实现了大幅度、快时变信息信号的混沌调制通信。
Since the synchronization error is independent of information signal, the chaotic modulation for large amplitude and fast varying information signals can be achieved.
本文研究了常用的混沌同步技术的方案和混沌调制技术的方案,并讨论和比较了相关技术方案的性能。
Some common scheme about chaotic synchronization and chaotic modulation has been studied in this paper, and the performance of these system has been discussed too.
为增强调制跳变技术的抗截获性能,提出一种基于时间信息(TOD)的宽间隔混沌调制跳变图案设计方法。
In order to enhance the anti-interception performance of modulation-hopping technology, a method to design wide-gap chaos modulation hopping pattern based on time of day(TOD) is proposed.
通过调节泵浦功率、调制频率和可调谐滤波器,可以产生不同波长的混沌信号,并实现混沌的同步。
Chaotic signals at different wavelengths can be generated by adjusting the pump power, modulation frequency and tunable filter, and chaos synchronization is achieved.
在本文中,我们将对混沌系统的同步问题和调制技术进行了比较深入的研究,并且将给出一些我们在混沌研究中取得的新结果。
In this paper, we will study deeply in synchronizing technology and modulating technology of chaotic system. We will present some new results of our chaos research.
本文研究了一种新型混沌编码的脉冲位置和相位复合调制的脉冲压缩雷达信号。
In this paper, a new Chaotic Pulse Position and Phase Coded Pulse Compression Radar (CPPPC PCR) signal is studied.
分析了泵浦调制掺铒光纤环形激光器中混沌产生以及同步的理论模型。
The models of chaos generation and synchronization in Er-doped fiber ring lasers with modulated pump are analyzed.
提出一种基于分岔参数调制的混沌数字通信系统。
A chaotic digital communication system via bifurcation parameter modulation is presented.
利用一个自适应控制器跟踪信息信号的误差对产生混沌载波的发射系统进行参数调制。
The parameter of the transmitting system procreated chaotic carrier is modulated by errors from an adaptive controller and information signal.
结果表明,该模型在不加扰动项或调制项时,即存在着混沌演化行为。
The results show that the model can exhibit chaotic behavior without any perturbation or modulation terms.
基于施密特正交化的原理,在产生正交混沌载波的基础上,提出并实现了一种基于混沌的正交调制通信系统。
Based on the idea of the Schmidt orthogonalization and the orthogonal chaotic carriers being generated, a chaos-based quadrature modulation communication system is proposed and realized.
波长周期相位相移调制控制也能使混沌激光控制到三周期态和多周期态等。
Chaos is also controlled into periodic state and multi-periodic state by a method of a wavelength periodic modulation.
其次,采用系统参数开关调制策略,研究了两个超混沌电路的控制问题。
In the second place, controlling using strategy of system parameter switching modulation in two hyperchaotic circuits is studied.
证明了光纤的交叉相位调制是限制激光混沌在光纤传输中同步的主要原因,导出了系统传输的非线性相移。
Chaotic laser synchronization is mainly limited by cross phase modulation in the fiber and the propagation nonlinear phase shift is educed.
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.
仿真结果表明:四种混沌源调制生成的混沌开关调制信号,均能够降低电源的输入电流及输出电压的频谱峰值。
Simulation results demonstrate: the chaotic modulation signals generated from the four kinds of chaotic sources can all reduce the peak level of the input current and the output voltage spectrums.
利用数值模拟的方法研究了电流调制下偏置电流和调制频率对垂直腔面发射半导体激光器(VCSEL)混沌动力学特性的影响。
The influence of bias current and modulation frequency on chaos dynamics of vertical-cavity surface-emitting laser (VCSEL) subject to direct current modulation is investigated by numerical simulation.
提出了一种基于反馈参数调制控制超混沌同步的方法,并应用于双环掺铒光纤激光器系统。
A method of feedback modulating-parameter is presented to synchronize hyperchaotic systems, and is applied to the hyperchaotic erbium-doped fiber dual-ring laser systems.
利用混沌系统的特点调制了两种不同的混沌序列,分别用于水印加密和子图像的抽取。
Two chaotic sequences are modulated according characters of chaotic system, using for watermark encryption and sub image extraction.
另一方面在于与以往的单纯混沌参数调制不同,此方法可以在同步精度较低时,实现信息的传输。
On the other hand compared with traditional chaotic parameters modulation, this method can transfer information when synchronism precision is low.
将随机调制模式中的随机部分用混沌信号替代,得到了多种混沌开关调制模式。
Replaced the random signals with chaotic signals, all kinds chaotic switching modulation mode can be obtained.
结果表明:自相位调制不影响混沌信号脉冲的形状,但能产生非线性相移使混沌信号频谱展宽;
Self-phase modulation of fiber does not affect the pulse shape of chaotic signal, however, its product of nonlinear phase shift can widen the chaotic signal spectrum.
另一方面在于与以往的单纯混沌参数调制不同,此方法可以在同步精度较低时,实现信息的传输。
On one hand this method can encipher information, on the other hand compared with traditional chaotic parameters modulation, this method can transfer information when synchronism precision is low.
文章给出了信道增益变化下利用蔡氏电路的混沌信号进行的包括信号调制和解调完整过程的混沌键控通信实验电路。
In this paper, an experimental CSK circuit using Chua s circuit with the whole modulation and demodulation process under changeable communication channel gain is presented.
采用DSP技术产生混沌信号,再量化、编码成二值序列,用来调制uw B脉冲信号。
Chaotic sequences were generated, quantized and coded into binary sequences which were used for modulation of UWB signal based on DSP technology.
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