Directivity

The principles include directivity , scientific nature , characteristic , stability , and pertinence .

遵循的原则有：方向性、科学性、系统性、稳定性、针对性原则。

Design of Array Model with Intense Directivity and Sound Field Simulation

一种强指向性基阵模型的设计及声场仿真

Design of Microphone Directivity Measurement System Based on Virtual Instrument

基于虚拟仪器的传声器指向性测量系统

The influence of transducer directivity characteristic on the ultrasonic power measurement

声源指向性对超声功率测量的影响

Research on Simulation of Array Directivity Based on Matlab

基于Matlab的基阵方向性仿真研究

Theoretical research on the improvement of linear array directivity by using an improving factor

利用改进因子改善直线基阵方向特性

Directivity and phase measurement of vector hydrophone using tone pulse method

矢量水听器的指向性和相位特性的脉冲法测试

Calculation and analysis of vertical directivity function for inclined planar antenna

倾斜式板状天线垂直方向性·论文·函数的建立与讨论

Some other directivity functions required in practice can be obtained by this method .

对于实际中所需要的其他各种指向性函数，用这种方法也能获得满意的结果。

Especially , it makes the measurement of the directivity simple and easy .

尤其是方向系数的测量，可以变得更加简单、容易。

The Analysis of the Directivity of Helicopter Rotor Noise Based on a New Acoustic Method

基于FW-Hpds方法的直升机旋翼气动噪声指向性分析

Research on the Directivity of Transducer Array Based on MATLAB

基于MATLAB的换能器阵列指向性分析方法研究

Introduce directivity measurement technology , especially for fountain field measurement theory . 4 .

介绍方向图测量技术，并且着重介绍了场源分布法测量技术的原理。

A weighting method for improving beam directivity of the circular array

一种改善圆阵波束指向性性能的加权方法

Rupture directivity and hanging wall effect in near field strong ground motion simulation

近场强地震动模拟中对破裂的方向性效应和上盘效应的表达

Measurement of directivity on lake for multi-beam high resolution image sonar system

高分辨图像声纳预成多波束的指向性湖上测量方法

The main results provide the reference for the directivity of ultrasonic in the air .

研究工作的主要成果为超声波的指向性研究提供了基础，具有一定的理论参考价值和实践意义。

Calibration of directivity errors of antenna array based on simulated annealing

基于模拟退火算法校正天线阵列方向性误差

The directivity of the group of the point source and the line source is analyzed .

分析了点声源组和线声源的指向性。

The Study of Theory of Directivity of Laser-induced Sound Radiating Field in Water

激光致声水中辐射声场的方向性研究

The application of conservation law of energy to the directivity synthesis is also studied in this paper .

研究了能量守恒定律在指向性综合中的应用。

Influence from Ground Attenuation , Screening , Reflection , Directivity Index .

地面衰减，屏蔽，反射，指向性指数的影响。

Design and Test of High Directivity PVDF Ultrasonic Transducer

声频定向PVDF超声波传感器的设计与测试

The directivity of the teaching methods ;

施教方法的指导性；

Measurement of RCS Directivity of Target Based on Straight-running Measurement Method

基于直航法的目标RCS方向特性测量

A Simple and Direct Method for Measuring the Directivity of the Directional Coupler

测量定向耦合器方向性的一种简捷方法

The rupture directivity effect is due to rupture propagation and radiation pattern effects .

破裂方向效应是由破裂传播和辐射图效应引起的。

Simulated results show that the directivity and the gain of the array are improved .

模拟结果表明，天线阵的方向性以及增益都得到了加强。

Complicated sex Analysis and experiment study on directivity of vector sensors located on complicated boundaries

复杂边界条件下矢量传感器的指向性分析及实验研究

The stronger antenna directivity is , the greater the channel capacity .

天线单元方向性越强，信道容量越大。