Method for a linear array beam focusing in the near field based on amplitude weighting
基于幅度加权的均匀线阵近场波束聚焦方法
Based on amplitude weighting, an approaching to function method for one-dimensional uniform linear array beam focusing in near field is proposed.
该方法易推广到面阵和阵元辐射具有不同偏振方向的横波或纵波近场空间波束聚焦计算中。
a 2-D precision cutting focus system for high power CO2 laser is manufactured.
研制了高功率CO_2激光二维切割精密聚焦系统，应用结果表明：该系统稳定性高，提高了生产效率和产品质量。
Based on laser propulsion thrust vector control, a thrice reflecting focus system is put forward, designed and fabricated.
基于激光推进推力矢量控制,提出、设计并加工了一种三次反射激光聚焦系统。
But one can also evaluate the stress level with the focus system of a stepper if the instruments are not available.
结合NikonStepper聚焦系统的技术特点 ,说明了膜应力评价的原理和具体做法 ,对光刻机应力测量的优劣进行了讨论 ,并给出了具体的测量实
This paper presented a new laser focusing system which is composed of a spatial filter and 80× focusing objective lens.
提出一种新的激光聚焦系统，它由一个空间滤波系统和８０×聚焦物镜组成，后者为一个双反射式球面系统。
In order to control the focusing nature of incident laser beam exactly,twice reflecting laser focusing system was designed.
为实现对入射激光束聚焦特性的准确控制,设计了二次反射激光聚焦系统。
In this paper, Formulae for the focal spot size of gaussian bar beam with two-lens focusing system are derived by q (z ) of gaussian beam.
该文利用高斯光束ｑ（ｚ）参量推导出了反远距双透镜聚焦系统对高斯光束聚焦光斑的精确计算公式。
Error analysis of the underwater imaging method using focused beamforming;
聚焦波束形成声图法误差分析
Radiated noise sources near-field location based on MVDR focused beamforming;
基于MVDR聚焦波束形成的辐射噪声源近场定位方法
A fast nearfield range and bearing focused beamforming algorithm is researched.
研究了一种近场距离/方位聚焦波束形成快速算法,离线计算每个搜索距离处的阵列方向向量,利用方向向量关于方位角的周期性,将方向向量的每个分量用有限项Fourier级数近似,从而搜索距离处的角度谱可以用FFT快速实现,无需在每个距离/方位栅格上计算时延和相位补偿,有效减小了计算量和存储量。
Method for a linear array beam focusing in the near field based on amplitude weighting
基于幅度加权的均匀线阵近场波束聚焦方法
Research on near field focus beam-forming and beam null-forming
近场声聚焦波束形成与波束零陷研究
For a wiggly-line trace, the beam is focused on the scope face at a point.
对于波形道，光束在荧光屏面的一点上聚焦。
The near field focused beamforming method for ship rediated noise
舰船噪声源近场聚焦波束形成定位方法
Transmission of foil-focused relativistic annular electron beam in coaxial cylindrical waveguide
箔聚焦强流相对论环形束在同轴波导中的传输
Diffraction Aberration of Focusing Atom Beam of Metastable Helium in Laser Standing Wave
亚稳态氦原子束在激光驻波场中聚焦的衍射像差研究
Enhancement of Third-order Harmonic Generated by Noncollinear Focused Dual Intense Laser Pulses in N_2;
氮气中非共线聚焦双光束三次谐波增强的实验研究
Focal switch effect of focused Bessel-Gaussian beams
聚焦贝塞尔-高斯光束的焦开关效应
Effective Fresnel Number and Focal Shifts of Focused Cylindrical Light Beams;
聚焦柱面光束的等效菲涅耳数及焦移
Performance Analysis of the Elliptic Beam Ring-focus Antenna with a Variable Focal Distance
椭圆波束变焦距环焦天线的性能分析
Focusing Properties of Beams: Focal Shift, Focal Switch and Phase Shift;
光束的聚焦特性研究：焦移，焦开关和相移
Parabolic dishes have the advantage that they point their beams to a single point at their focus, creating a clear and strong signal.
抛物面碟面的优点是能将波束在它的焦点处汇聚到一个单一的点，产生一个清晰、力的信号。
Numerical Research on Induced Focusing of Optical Beams in Self-defocusing Media;
自散焦介质中光束诱导聚焦的数值研究
The energy source for laser beam machining is a highly concentrated beam of light.
激光切削的能量来源于一束高聚焦光。
Design of electrostatic foc using system of the space electron beam gun
空间用电子束焊枪电聚焦问题的研究
Study on the Transport of Foil-Focused Radial Intense Relativistic Electron Beam;
箔聚焦径向强流相对论电子束的研究
Non-paraxial Vector Theory for Self-focusing of Intens e Laser Beams;
强光束传输的非旁轴矢量自聚焦理论
Micro-/Nano-Fabrication Using Focused Ion Beam Technology
微米/纳米加工中的聚焦离子束技术