1) ambiguity similitude
模糊优化度
1.
A criterion named ambiguity similitude for optimizing FCP signal has been proposed and two coding rules for optimizing FCP signal have been presented.
分析了频率编码脉冲(frequency coded pulse,FCP)雷达工作原理;推导了基于自相关函数的步进频率信号的模糊函数,针对常用的FCP信号———步进频率编码信号(frequency stepped signal,FSS)距离-多普勒旁瓣电平较高、存在“距离-速度”耦合、距离-速度联合分辨率低的缺点;提出了优化频率编码的模糊优化度准则,并基于该准则给出了2种编码优化规律不同的频率编码优化方法。
2.
A criterion named ambiguity similitude for optimizing of FCP signal was proposed and two coding rules for optimizing of FCP signal was presented,and the coding results were expressed in the code of length N=16.
分析了频率编码脉冲信号(FCP)雷达原理,推导了基于自相关函数的步进频率信号的模糊函数,针对常用的FCP信号-步进频率编码信号距离-多普勒旁瓣电平较高,存在“距离-速度”耦合,“距离-速度”联合分辨率低的缺点,提出了优化频率编码的模糊优化度准则,并基于该准则给出了两种编码优化规律不同的频率编码优化方法,仿真结果表明,在保持原有的距离、速度分辨率的情况下,两种方法都能有效地降低“距离-速度”二维耦合,提高“距离-速度”联合分辨率。
2) fuzzy reliability optimum design
模糊可靠度优化
1.
By the aid of the fuzzy mathematic theory and the optimization methodology,a fuzzy reliability optimum design model and the corresponding computation method were developed in this paper.
考虑结构的可靠度为模糊可靠度,优化的约束函数为模糊约束,利用模糊数学理论和优化设计方法建立了复合材料层合板的模糊可靠度优化模型,并提出了相应的计算方法。
3) fuzzy optimum
模糊优化
1.
Multi-objective fuzzy optimum design of four-bar luffing mechanism of variation based on genetic algorithm;
基于遗传算法的四连杆变幅机构多目标模糊优化
2.
The establishment of nonsymmetry fuzzy optimum model, resolution principles and its application in the design of pump and generator belt conveyer are discussed.
论述了非对称模糊优化模型的建立、求解原理及其在水泵和电机皮带传动设计中的应
4) fuzzy optimization
模糊优化
1.
A study on fuzzy optimization of drilling parameters based on reliability analysis;
基于可靠度的钻削参数模糊优化研究
2.
Multi-objective fuzzy optimization of flying shear mechanism based on genetic algorithm;
基于遗传算法的飞剪剪切机构多目标模糊优化
3.
Main parameters' fuzzy optimization mathematical model of two-way running belt conveyer;
双运带式输送机主参数的模糊优化数学模型
6) fuzzy optimizing
模糊优化
1.
It is a key p roblem to study the fuzzy optimizing multi-dim ensional dynamic programming model for w ater resources systems.
水资源系统模糊优化多维动态规划模型是水资源系统优化研究中的一个重要课题。
补充资料:几何学模糊度
几何学模糊度
放射学术语。由X线管有效焦点大小,即由几何投影因素所产生的照片模拟、影像边界的不锐利程度,又称半影。几何学模糊度(Hf)是X线成像技术中影像模糊的最主要成因。几何模糊度与有效焦点(F)成正比,与物-片距(c)成正比,与靶-物距成反比。若用公式表示,几何学模糊度的值为:Hf=〓〓c〓〓b-c〓〓F(b代表靶-片距)。焦点的大小对产生影像半影的关系很大,用小焦点或微焦点可提高照片的清晰度。例如,放大摄影时C值增加,若用小焦点X线管投照则可弥补由于物-片距增加而增加的几何学模糊度。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条