近场和远场。
The Variation of Radiated EM Intensity and Power Density on Spheres in Near and Far Field from Array of Time Harmonic Currents.
弦变线电流源之辐射电磁场强及功率密度在近场至远场球面上之变化。
The radiation pattern in the near and far field of each frequency component of the spectrum of current pulse on a transmission line.
传输线线上脉波电流之频谱与分布及其各频率成份之辐射远近场型之差异。
Verification of differences of characteristics of electromagnetic field image and radiation pattern in the near and far field are demonstrated.
验证电磁场影像及场型特性在近场与远场中之差异。
The "wave-and-pay" technology, called near-field communication (NFC), has proved popular in the Japan and South Korea, but has so far failed to make an impact in Europe.
“感应刷卡”技术，也叫近场通信技术(NFC)，在日本和韩国已大受欢迎，但至今为止在欧洲的影响甚小。
The eXpression of directivity of far field and near field was derived.
推导出了此类换能器的远场指向性和近场声压的表达式。
The near and far electromagnetic field are synthesized by summation of the electromagnetic field of short current segments or Hertz dipoles.
以很多小段赫芝偶极之完整电磁场合成一任意线电流之近场与远场电磁场。
This method can obtain the estimation of the steering vector directly and is adaptive to both far field and near field models.
该方法可直接获得导向矢量的闭式估计，并且该方法可适用于阵列远场、近场接收信号模型。
The computing method using scaling model can be applied to both far field and near field.
缩比模型计算既适用于近场，也适用于远场。
A method for planar near field to far field transformation based on element current reconstruction is presented and the basic principle of this method is given.
本文提出了一种新的基于单元电流重构的平面近远场变换方法，给出了该方法的基本原理。
Fracture diagnosing technique is mainly classified into: direct far field fracture diagnosing, direct near well bore fracture diagnosing and indirect fracture diagnosing.
裂缝诊断的方法主要可分为：直接的远场裂缝诊断技术、直接的近井筒诊断技术、间接诊断方法。
In the end, the propagation of cylindrical wave in free space, and the hollow cylinder scattering characteristics in near field and far field is completed when it is initiated by cylindrical wave.
最后，模拟了柱面波在自由空间中的传播及空心圆柱体在柱面波入射下的近场和远场散射特性。
The mode of propagation contains near field and far field.
传播方式分近场和远场；
Using the finite difference time-domain (FDTD) method and near field to far field transformation, pressure of the reflected sound from the scattering target is calculated.
本文应用一致性时域有限差分法（FDTD）和近场远场变换计算散射声目标的反射声压强度，找出反射声压级与目标声中心到换能器间距离的关系。
This paper provided a new algorithm used in antenna's planar near field measurements to conduct near field and far field transformations.
本文研究了一种应用于天线平面近场测量中完成近远场变换的数值算法。
The body forcing term, near field and far field free surface forcing term calculation are studied.
对物面非齐次项、近场自由面非齐次项和远场自由面非齐次项的计算进行了讨论。
The Chain Relation is meaningful in the research on target character, the far-field and near-field scattering measurement.
链条关系式在目标特性研究、远场和近场散射测量等方面有重要意义。
The relationships between images of near and far objects with camera lens and field of view and object distance and the image ratio are researched.
根据光学透镜成像原理，推导近端和远端物像与相机焦距、视角和物距的关系式及其像比，借此控制相机视图中远近两端物像的形状反差。
The images of electric and magnetic field of different polarizations in the near to far field.
电流源阵列不同极向电磁场之影像在远近场中之变化。
It has been verified that the directional characters in near sound field in low and middle frequency bands and the pressure level in far...
计算结果正确预测出近场中低频段的指向性特点和远场声压级水平，与实测谱值有较好的一致性。
"Near to far" and "far to near" field transformations are carried out for the data measured on a sphere surrounding the pyramidal horn antenna. The transformed results agree well with the...
对矩形角锥喇叭天线球面扫描测量的数据进行了“近-远”和“远-近”场变换，变换结果与测量结果吻合较好。
Explanation: a careful look at the full field of view for this sharp image reveals a surprising number of galaxies both near and far toward the constellation Ursa Major.
解释：认真检查，充分视野这一急剧复合图像揭示了令人吃惊的星系数量或近或远的星座大熊座。
However, far field model can not satisfy all the needs in practical application. Therefore, the beam forming method research based on near-field become more and more important.
在实际应用中，远场假设并不能满足所有需要，因此对近场情况下的波束形成方法进行研究就显得尤为重要。
The effect under near-field earthquake with pulse is more prominent than near-field earthquake without pulse and far-field earthquake by sequence.
其中，近场脉冲地震动的影响依次大于近场非脉冲地震和远场地震。
In this paper, the half space is divided into a near-field and a far-field.
在本文中，半空间被划分为近场和远场。
Waveguide mode, ASE threold and near-field and far-field distribution are culcalated for a rectangle waveguide model.
利用矩形波导模型求出波导模式、放大自发辐射阈值、放大自发辐射的近场及远场光强分布。
The migration phenomena reveal a process that the seismicity in both the far-field and the near-field becomes intensive and quiet alternatively before a main shock.
这种迁移现象反映出大震前远震源区和近震源区内地震活动交替活跃和平静的过程。
The migration phenomena reveal a process that the seismicity in both the far-field and the near-field becomes intensive and quiet alternatively before a main shock.
这种迁移现象反映出大震前远震源区和近震源区内地震活动交替活跃和平静的过程。
应用推荐