混沌 1.(宇宙形成前的景象) chaos; the chaotic world in prehistoric times 混沌初开 when earth was first separated from heaven; at the dawn of civilization; 混沌状态 chaotic state; 原始的混沌状态 primal chaos2.(无知的样子) innocent as a child; ignorant and dumb3.(姓氏) a surname 混沌清 hundun qing; 混沌场 chaos field
3 . the detection of delicate signals in chaotic noise is studied 3 、研究了混沌噪声中微弱信号的检测问题。
The main purpose of this thesis is to try to detect weak sine signal embedded in chaos 本文研究的目的是检测混沌噪声背景中的微弱正弦信号。
Weak signal detection and extraction against the background of chaotic noise based on empirical mode decomposition 基于经验模态分解的混沌噪声背景下弱信号检测与信号提取
Simulation results and real - life data are used to show the feasibility of the proposed method . ls - ar spectrum method and ga - mpsv are presented to solve the estimation problems in chaotic noise 基于混沌噪声的预测值,提出了混沌噪声中的信号检测方案,并进行了相应的仿真试验。
The principle of the error - based detecting method used in the detection of periodical signals is theoretically analyzed , and simulations are carried out to show its feasibility and efficiency 从理论上分析了混沌噪声中检测微弱周期信号的误差检测方法的原理,并作了计算机仿真实验,验证了其可行性和有效性。
The efficiency of the error - based detecting method when it is used to detect dsss signal in chaotic noise is analyzed theoretically , and simulations are carried out to show its feasibility and efficiency . 4 从理论上分析了用于检测周期信号的基于混沌噪声模型的误差检测方法,对检测混沌噪声中的直扩信号同样有效,并通过仿真实验证实了这种误差检测方法用于检测微弱直扩的可行性和有效性。
This error - based detecting method is improved , that is , predicting the chaotic noise is changed to estimating the chaotic noise . a predicting method is improved to an estimating method to estimate the chaotic noise . then the time used to train the parameters is saved , and no invalid detection will be gotten even if signals come into 4 、改进了误差检测方法,即,将预测混沌噪声改为估计混沌噪声,并改进了一种非线性预测算法,将其用于估计混沌噪声,省去了参数训练的时间,避免了参数尚未训练好时就有信号进入背景噪声中,而使检测无效的情况。