方向性函数

本文利用曲线积分的方法，导出了V型偶极子天线在空间任一点处远区场的一般数学表示式以及方向性函数、辐射电阻和方向性系数的计算式。

In this paper the general formulas on calculating far-field for the Vee Dipole Antenna at the space are derived from method of curvilinear integration and the field pattern , the radiation resistance and the directivity are given .

本文基于渐近波形估计（AWE）技术和矩量法（MOM）快速预测无限大导体平面上任意形状凹槽的散射场方向性函数。

The method of moments ( MOM ) combining with the asymptotic waveform evaluation ( AWE ) technique is used to predict scattering fields of an arbitrarily shaped groove in a perfectly conducting plane .

详细分析了由子阵构成的DBF的方向性函数特性，给出了方向图的设计方法，并讨论了其栅瓣产生的条件。

This paper analyses the pattern function of DBF in subarray . The designing method for directivity pattern is given and the condition of producing the grating lobe is discussed .

本文分析了子阵DBF在理想通道条件及通道失配情况下的方向性函数，给出了其和差波束方向性函数特性。

We analyze the pattern function of DBF in subarray under the ideal condition and with channel mismatch , and give the pattern functions of sum and difference beam . We correct the reception channel mismatch by using the channel equalization method .

利用方向性函数确定地震破裂特征

Fracture Feature Determination of an Earthquake by Using the Directional Function

在此基础上.利用SBM方向性距离函数和GML指数测算及分解了中国各省市的环境技术效率和环境全要素生产率增长。

On this basis , estimate and decompose the technical efficiency and total factor productivity growth of Chinese provinces and cities using the SBM directional distance function and the GML index under environmental constraints .

不良贷款约束下的中国银行业效率&基于方向性距离函数的实证分析

China 's Bank Industry Efficiency with Non-Performing Loan Constraint & An Empirical Analysis Based on Directional Distance Function

我国工业行业增长与环境协调性评价&基于方向性距离函数实证分析

Evaluation on the Harmonious Degree between Growth and Environment of Chinese Industries & Empirical Analysis based on the Directional Distance Function

不同于小波变换，Contourlet变换的多方向性和基函数支撑区间具有随尺度长宽比变化的长条形结构，使得它能有效地捕捉图像信息中的几何结构特征。

Different from the wavelet transform , the multi-directionality and the property that the support of basis functions has a variety of elongated shaped with different aspect ratios make it effectively capture the geometric structure features of the image information .

倾斜式板状天线垂直方向性·论文·函数的建立与讨论

Calculation and analysis of vertical directivity function for inclined planar antenna

分析表明，引起破裂方向误差的主要因素是台站包围震中的张角和制作广义方向性函数理论量板的精细程度。

The result shows that the main factors causing the error of determining direction of fracture plane are the field angle in which the stations are distributed and the precision of making the theoretical master for the generalized directional function .