片语

far-field curves远场特性

far-field recording远场记录

far-field condition远场条件

far-field holography远场全息术

far-field approximation远场近似

far-field region远场区域

far-field spot远场光斑

far-field expressions远场表示式

英汉例句

• in the case of far field sources, based on the subspace direction-finding technique, a new active calibration algorithm for mutual coupling errors among sensors is presented.

  文章基于子空间类测向方法，在远场情况下，提出了一种新的阵元互耦有源校正算法。

• airport obstacle will influence the far field of decimeter-wave instrument landing system(dw-ils) antenna.

  机场障碍物的存在会对分米波仪表着陆系统天线辐射场产生一定的影响。

• in the case of far field sources, based on the subspace direction-finding technique, a new method for active calibration of array shape is presented.

  文中基于子空间类测向方法，在远场情况下，提出了一种新的估计阵元位置误差的有源校正算法。

• 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。

• hence, the measurement of the laser propagation characteristics in the far field is the basis for the optical design of optical systems.

  因此，对远场激光传播特性的测量是光学系统光路设计的基础。

• when considered the far field test, the sample plane cannot do infinitely great, the paper has analyzed the truncation error, and proposed the error correction method.

  考虑到远场测试时，取样平面不可能做的无限大，在对误差进行分析的基础上，给出了误差修正方法。

• with this amplifier structure, the beam quality keeps well without spatial modulation, and the far field of the amplifier output is close to the diffraction limit.

  实验表明，该放大器结构稳定，可以保持良好的光束质量，远场焦斑达到近一倍衍射极限。

• the results indicate that the presented method could illuminate the saturation effect in near field and attenuating characteristics of strong ground motion in far field from large earthquake.

  结果表明，建议的方法能反映近场强震地震动饱和的效应和大震远场衰减的特点。

• the acoustic element array output signal model is analyzed for far field and near field. the beam pattern of image sonar is obtained by the simulator.

  文章讨论了模拟器信号发生的机理，分析了近场和远场声基阵输出的信号模型。

• the far field diffractive pattern calculating formula for diffraction antenna with continuous phase structure is derived by current distribution method in antenna theory for the first time.

  应用天线理论中的电流分布法，首次推导了具有连续位相结构的反射式毫米波衍射天线的远场衍射图计算公式。

• 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。

• a concept of ultra wideband radar signal is proposed, and then a time domain imaging algorithm is presented to reconstruct far field images of conducting objects.

  给出超宽带雷达信号的概念，提出由超宽带雷达信号散射远场重建理想导体目标简捷的时域成像公式和实现算法。

• this paper presents a study on the different behaviors of surface buoyant jets in the near field and far field region flows.

  本文对表面浮射流的近区和远区分界问题进行了系统的研究和分析。

• output force phase should be controlled so as to get the far field signal inphase with the output force phase.

  为了保证远场信号的相位与激振力的相位一致，应当控制激振力的相位。

• based on the theories of opt-mechanics scanning system and optical transmitting system, the far field scanning system is designed.

  根据光机扫描系统理论和发射光学系统理论设计，完成了大口径远场扫描发射光学系统。

• the spectral behavior of polychromatic spatially fully coherent light diffracted by an annular aperture in the far field is studied.

  研究了多色空间完全相干光经过环形光阑衍射后在远场出现的光谱变化，并给出了详细的数值计算结果和具体实例。

• the far field patterns and performances of antenna under measurement can be obtained rapidly and efficiently by this method compared to some conventional methods, the precision is good enough.

  利用此方法可以依据天线平面近场测试数据快速简便地求得天线远场方向图及其它特性，其精度较高；

• 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 fast far field approximation (faffa) technique is employed in the hybrid physical optics-moment method (po-mm) to speed up the matrix- vector product in the solution of matrix equation.

  本文提出了一种快速远场近似（faffa）加速的混合物理光学矩量法（pomm） ，利用faffa加速计算矩阵方程中的矩阵矢量积，明显提高了计算效率。

• the analytical te and tm terms in the far field are presented by stationary phase.

  在远场，利用稳相法给出了te项和tm项的解析表达式。

• it is shown that the characteristics of the far field distribution is substantially improved.

  结果表明，其远场分布特性均有本质的改进。

• a built-up circular piston sound source is established in this paper. the directivity formula of its far field is obtained, and its validity is simulated.

  依据本文构造的组合圆形活塞声源，导出了该声源远场指向性公式，并对其正确性和有效性进行了仿真研究。

• the influence on the growth morphology of the spherical crystal in the undercooled melt imposed by the far field flow is studied by the asymptotic method.

  利用渐近分析方法研究了远场来流引起的对流对过冷熔体中球状晶体的生长形态的影响。

• two abcd matrices for describing hard apertured gaussian beams weakly diffracted in the far field are defined.

  定义两种描述高斯光束被硬边光阑弱衍射的远场下的光阑abcd矩阵。