imaginary sphere

imaginary sphere的基本解释

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虚球

与imaginary sphere相关的网络例句 [注：此内容来源于网络，仅供参考]

3Rd , took the popular literature , the Contemporary China unreliable imaginary novel inevitable one-sidedly has the pursue plot in the esthetic interest windingly , by caters to the tendency which the reader flight from reality leisure reading needs , but is unreliable innately is imaginary different in the reading interest creation with other popular literature characteristics , one is in the unreliable imaginary novel is flooding each kind of daydream grand feast Two is the unreliable imaginary novel has the broad compatibility Three is as a result of take the network as the publication main carrier , on was objective eliminated publishing industry some barriers , the unreliable imaginary novel had in the interest creation superiority which the knight-errant , the romance and so on other popular literature could not have .

3，作为通俗文学，当代中国玄幻小说在审美趣味上不可避免的具有片面追求情节曲折，以迎合读者逃避现实的休闲阅读需要的倾向，不过玄幻小说在阅读的趣味创造上自有不同于其它通俗文学的特点，一是玄幻小说里充斥着各类白日梦的盛宴；二是玄幻小说具有宽泛的兼容性；三是由于以网络为发表的主要载体，客观上消除了出版业的一些壁垒，玄幻小说具有武侠，言情等其它通俗文学所不能拥有的趣味创造上的优势。

In inertia system K,geometric sphere is changed to elliptic sphere in K system by Lorentz transformation ,and the pre-sphere of optical wave in K system is changed to sphere in K system.

对惯性系K中的几何球面施以洛仑兹变换，在K′系得到扁椭球面；对K中的光波前球面，在K′系则得到球面；两者皆源于时空的基本属性，但前者是由于物体长度的相对性，后者则是由于光速的不变。

In this chapter, three kinds of target recognition methods are performed, which are:①Target recognition method based on the description of polarization parameter plane. The echo polarization states of target are projected onto the polarization state plane described by the ellipticity ε and the tilt angle τ of the polarization ellipse, the change of parameter following ferquency becomes the chart. According to the changing trait of the chart, the multidimensional polarization feature space of target has been contructed. Furthermore, a series of polarization feature parameters used in designing the structure of target recognition device are extracted, and they are insensible to the posture of target.②Target recognition method based on the description of Poincare polarization sphere. The echo polarization states of target expressed by Stokes vector are projected onto the Poincare polarization sphere. The conception of polarization ferquency stability, which is used in describing the dynamic distribution characteristics of the target echo polarization states on Poincare polarization sphere, has been defined. A group of polarization feature parameters used in designing the structure of target recognition device are extracted, and they are insensible to the posture of target.③Target recognition method based on the description of frequency sensitivity. In accordance with the conception of the polarization state distance defined on Poincare polarization sphere, the frequency sensibility of the physical structure property of target has been investigated, the frequency distribution feature curves in PSD domain are obtained, and targets'features are extracted by means of the curve-fitting method with Least Square Criterion.

这章具体研究了基于三种极化散射特性描述的相应的目标识别方法：①基于极化参数平面描述的目标识别方法，将目标回波极化状态投影到以极化椭圆参数，即椭圆率角ε和倾角τ表征的极化状态平面上，参数随观测频率的变化就形成了图，根据图的变化特点构造了目标的多维极化特征空间，并提取了不敏感目标姿态变化的极化特征参数组来设计目标的识别器结构；②基于Poincare极化球面描述的目标识别方法，采用Stokes矢量表征目标回波的极化状态，并将其投影到描述极化状态的Poincare极化球面上，定义了极化频率稳定度的概念用以刻画目标回波极化状态在Poincare极化球面上的动态分布信息，提取了准方位不变性的目标极化特征，最后设计了目标的识别器结构；③基于频率敏感性描述的目标识别方法，通过在Poincare极化球面上所定义的极化状态距离的概念，研究的是复杂目标物理结构特性对探测信号频率的敏感程度问题，获得了在极化状态距离下的频率分布特性曲线，采用最小二乘估计曲线拟合方法，它既用于极化特征的降维，同时又直接将拟合参数作为目标的分类特征。

与imaginary sphere相关的网络解释 [注：此内容来源于网络，仅供参考]

imaginary sphere：虚球

imaginary root 虚根 | imaginary sphere 虚球 | imaginary unit 虚数单位