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1)  ambiguity function
模糊函数
1.
Application of Ambiguity Function Images and Probabilistic Neural Networksto Fault Diagnosis of Diesel Valve Train;
模糊函数图像与概率神经网络在柴油机气阀故障诊断中的应用
2.
Kernel design based on the contour of the ambiguity functionand related timefrequency distribution;
基于模糊函数的等高线设计核函数及其时频分布
3.
UWB radar signal DOA estimation based on ambiguity functions;
基于模糊函数的LFM UWB雷达信号滑动平均波达方向估计
2)  fuzzy function
模糊函数
1.
Based on the fuzzy function of pulse train and linear step frequency signal, the performance of the two kinds of pulse trains is analyzed.
本文结合均匀脉冲串和载频线性递增脉冲串信号的模糊函数,分析了两类矩形脉冲串信号的性能;给出了旁瓣位置及幅度的数学描述及旁瓣抑制方法,结论为:载频线性递增脉冲串信号相对于均匀脉冲串信号提高了其距离分辨力却引入了距离旁瓣,但对于速度分辨力没有影响。
2.
In this paper, the method of generating the basic Logistic-projection chaotic-sequence and its correlated characteristic are introduced; the fuzzy function of the chaotic phase-modulated waveform of fuze is deduced; the detecting property of the chaotic phase-modulated waveform of fuze is analyzed.
介绍了基本 Logistic 映射混沌序列的产生方法及其相关特性;推导了引信混沌调相波形的模糊函数;分析了引信混沌调相波形的探测性能;研究结果表明,混沌调相波形的模糊函数接近理想的图钉型,具有理想的测距、测速性能和较强的抗干扰能力。
3.
Supposing that reverberation model is a time random process F(t) ,firstly this paper analyses and deduces the expression of reverberation welter according to the concept of fuzzy function, then establishes the model of anti - reverberation welter with linear frequency modulation signal.
在假设混响模型为一时间随机过程F(t)的基础上,利用信号模糊函数的概念,分析推导了混响干扰起伏表达式,建立了线性调频信号抗混响起伏模型,并对相同脉宽、相同主频条件下的调频信号和单频信号的混响起伏作了比较,用实验的记录结果证实了理论模型的合理性。
3)  fuzzy functions
模糊函数
4)  ambiguous function
模糊函数
1.
Based on the ambiguous function of stepped frequency train of LFM pulses,this paper analyzes the reason why it produces range grating lobes and gives the signal parameters′ restriction to remove the grating lobes.
借助于调频步进信号的模糊函数分析距离栅瓣产生原因,并给出信号参数约束条件,以消除距离栅瓣;另一种方法是先把子脉冲串合成完整的线性调频信号,再进行压缩处理,这种方法可以避免栅瓣的产生,但是处理方法比较复杂。
5)  ambiguity function
模糊度函数
1.
In wideband system,ambiguity function of Linear Frequency Modulation(LFM) is coupled in delay and Doppler,and the main ridge of Wideband Ambiguity Function(WAF) is not simple linearity.
在宽带系统中,线性调频信号的模糊度函数不仅在时延和多普勒频移具有耦合性,而且其宽带模糊度函数的脊线已经不是简单的直线,使得进行目标参量估计变得复杂。
2.
In wideband system,ambiguity function of linear frequency modulation(LFM)is coupled in delay and Doppler, and the main ridge of wideband ambiguity function(WAF)is not simple linearity.
在宽带系统中,线性调频信号的模糊度函数不仅在时延和多普勒频移具有耦合性,而且其宽带模糊度函数的脊线已经不是简单的直线,使得进行目标参量估计变得复杂,作者为了提高其估计精度在文献[1]中给出两种修正方法,本文从仿真实验角度来验证修正2方法的有效性,实验结果显示该方法估计高速目标的速度时可提高估计性能。
3.
This paper studies the Ambiguity function of LFM(Linear Frequency modulation signals) as well as its synchronous performance on such bad transmission condition as multi-path effect in water,according to which the computer emulation and lacustrine experiment data both prove that this method is available in the synchronization of acoustic communication.
本文研究了线性调频信号(LFM)的模糊度函数及其在多径效应等水下恶劣传输条件下的同步性能,计算机仿真和湖上实验结果都表明该方法能够实现水声通信的同步。
6)  fuzzy basis function
模糊基函数
1.
An on-line tracking self-learning algorithm for fuzzy basis function(FBF)neural network classi- fier is proposed in this paper.
提出了一种用于分类的模糊基函数(FBF)神经网络在线跟踪自学习算法,通过带有遗忘因子的样本均值和样本协方差矩阵,保存了原始样本所包含的类可能性分布信息,并在此基础上产生新增样本的目标输出用于训练FBF网络,以实现分类边界的在线跟踪;给出了带有遗忘因子的样本均值和样本协方差矩阵的递推算法,以克服传统方法需要保存大量以往训练样本带来的困难。
2.
Most of the existing intelligent fault diagnosis systems are lack of the ability to track the operation behavior of the machine,thus a online tracking self-learning algorithm for the fuzzy basis function(FBF) network was researched,which was used in the behavior-based intelligent fault diagnosis system.
针对现有绝大多数智能故障诊断系统自适应跟踪设备行为变化能力的不足,对基于行为的智能化故障诊断系统中模糊基函数网络的在线跟踪自学习算法进行了研究,提出了一种在线跟踪故障分类边界的自学习算法。
3.
The support vectors which are used for confirming the fuzzy basis function and creating the corresponding fuzzy rules were extracted from the training samples by the learning mechanism of SVM, and the fuzzy reasoning model was build up as a result.
该建模方法应用支持向量机的学习机制从训练样本中提取支持向量,由支持向量确定模糊基函数,产生相应的模糊规则,建立起模糊推理模型。
补充资料:高斯函数模拟斯莱特函数
      尽管斯莱特函数作为基函数在原子和分子的自洽场(SCF)计算中表现良好,但在较大分子的SCF计算中,多中心双电子积分计算极为复杂和耗时。使用高斯函数(GTO)则可使计算大大简化,但高斯函数远不如斯莱特函数(STO)更接近原子轨道的真实图象。为了兼具两者之优点,避两者之短,考虑到高斯函数是完备函数集合,可将STO向GTO展开:
  
  
  式中X(ζS,A,nS,l,m)定义为在核A上,轨道指数为ζS,量子数为nS、l、m 的STO;g是GTO:
  
  
  其变量与STO有相似的定义;Ngi是归一化常数:
  
  
  rA是空间点相对于核A的距离;ci是组合系数;K是用以模拟STO的GTO个数(理论上,K→∞,但实践证明K只要取几个,便有很好的精确度)。
  
  ci和ζ在固定K值下, 通过对原子或分子的 SCF能量计算加以优化。先优化出 ζS=1 时固定K值的ci和(i=1,2,...,K),然后利用标度关系式便可得出ζS的STO展开式中每一个GTO的轨道指数,而且,ci不依赖于ζS,因而ζS=1时的展开系数就是具有任意ζS的STO的展开系数。对不同展开长度下的展开系数和 GTO轨道指数已有表可查。
  

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