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beam scan
相关语句
  波束扫描
    Time domain analysis of near-field beam scan for non-carrier wave single pulse linear antenna array
    无载波单脉冲天线阵近场波束扫描的时域模拟
短句来源
    It is shown that the beam scan and the polarizations of electric fields can be controlled simultaneously if the forms of module arrangement are chosen properly and the amplitudes and the phases of array excitation are determined by the method presented in this article.
    着重讨论了变线极化扫描的实现方法,提出一种确定单元激励幅度和相位的计算方法,利用该方法,在适当选择单元排列形式时,可以达到同时控制波束扫描和电场极化方向的目的。
短句来源
    Doppler beam sharping (DBS) application to airborne radar,in air/grornd operation mode,is of benefit to azimuth resolution increase of the grornd targets over the range of main beam radiation,and gives sharp image over a range of main beam scan area.
    】多普勒波束锐化(DBS)应用于机载雷达,有利于在空/地工作模式中提高主波束照射区内地面目标的方位分辨力,给出主波束扫描照射区内的清晰图象。
短句来源
    Our results showing that with the launcher we can set the energy focus and enhance the single pulse energy(peak value power)effectively, besides, the launcher has its good beam scan performance.
    结果表明 ,该辐射器一方面可以实现空间能量合成 ,大大提高单个脉冲的能量 (峰值功率 ) ,另一方面还具有良好的波束扫描特性 .
短句来源
    Regarding the minimum of the mean distance between given pattern and synthesized pattern as optimization rule,in the case of non restraint,zero restraint or beam scan restraint,one can respectively gain relevant optimum excitation vectors.
    以给定方向图与被综合方向图之间的均方距离最小化为优化准则 ,在无约束、零点约束以及波束扫描约束的情况下 ,分别给出了相应最优激励向量的求解方法 .
短句来源
  “beam scan”译为未确定词的双语例句
    A method for high power microwave beam scan by spin and swing
    高功率微波束的旋摆扫描方法
短句来源
    Study of Beam Scan with Variable Linear Polarisation Directions of Antenna Arrays Using MMIC T/R Modules
    MMIC组件构成的天线阵变线极化扫描的研究
短句来源
    That is done as following: getting the information of target azimuth through the antenna composed beam scan;
    该方法的具体步骤包括:通过接收天线阵合成波束的扫描,获取目标的方位信息;
短句来源
    With the rapid development of phased array radar technology,a high requirement is given to the radar beam steering system,particularly to fast beam scan steering for a large aperture antenna array.
    随着相控阵雷达技术的发展 ,对波控系统的要求越来越高 ,特别是大尺寸天线阵面波束的快速扫描问题。
短句来源
    With the development of the phased array radar technology,a large-scale active phased array radar has a large antenna array and hundreds of T/R modules,and a new question arises in beam steering system to realize beam scan steering fastly and accurately for so many T/R modules.
    随着相控阵雷达技术的发展,大型有源相控阵雷达的天线阵列面大、T/R组件数目多达几百、几千个,对如此众多的T/R组件实现快速、准确的波束控制,给波控系统的设计带来了新的难度。
短句来源
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  beam scan
Results show that the refined theory of transversely isotropic beams can be degenerated into that of isotropic beams by omitting anisotropic terms.
      
Laser crystallization with intense beams can lead to surface defects which are formed by convection flow in the melt (Marangoni effect).
      
The results of this study were used to create electron-beam scan speedvs composition diagrams, which can be used to predict the primary mode of solidification and the microstructural morphology for different processing conditions.
      
Carbon fiber-reinforced plastic (CFRP) reinforced concrete beams can fail due to interface debonding, due to the high tensile strength of such rebars.
      
Theoretical and experimental investigations confirm that the theory of beams can be used, within its applicability range, for express-analysis of the frequency spectrum of turbomachine blades.
      
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The principles of Multi-beam scanning (MBS) method in the acoustic imaging techniques is analysed by using Discrete Fourier Transform instead of Fourier Optics usually used in the imaging area. Firstly, the mathematical model of acoustic imaging is worked up. Then, the system function of the imaging device is found out. Finally, the principles of the MBS method is briefly described, and the design principles for the directionality of the receiving and transmitting array elements are discussed.

本文没有沿袭成象领域中常用的付里叶光学法,而尝试采用离散付里叶变换(DFT)来分析声成象技术中多波束扫描法(MBS法)的工作原理。首先归纳出声成象的数学模型,然后求得成象设备的系统函数。最后,扼要地叙述了MBS法的工作原理,讨论了收、发阵元的方向性的设计原则。

A passive lens based on the prismatic refraction principle proposed to amplify the scan angle of a phased array. The lens consists of an array with any curved surface of revolution, or of dielectric material. Many formulae used to calculate fixed phase distribution for the array lens, configuration curve of the dielectric lens and aperture phase of a feed phased array are derived. When used in combination with a planar phase array antenna, the lens makes it possible for the single planar phased array antenna...

A passive lens based on the prismatic refraction principle proposed to amplify the scan angle of a phased array. The lens consists of an array with any curved surface of revolution, or of dielectric material. Many formulae used to calculate fixed phase distribution for the array lens, configuration curve of the dielectric lens and aperture phase of a feed phased array are derived. When used in combination with a planar phase array antenna, the lens makes it possible for the single planar phased array antenna to achieve the capability of beam scanning for hemispherical coverage.

本文基于棱镜折射原理,提出一种用来放大相控阵天线扫描角的无源透镜。该透镜由任意旋转曲面形阵列或介质材料构成。给出了计算阵列透镜配相、介质透镜外形曲线和平面相控阵天线孔径相位的若干计算公式。当这种透镜与平面相控阵天线组合使用时,则可使单个平面相控阵天线波束获得半球空域的扫描能力。

This paper describes an algorithm for adaptive multibeamformer ofnarrowband and wideband systems.The optimal criterion which is the algorithm based onis that choising the suitable weights minimze the output power in the array output undersatisfying the constraints for the beam direction and amplitude.It is able to form N-1 inde-pendent beams for an N elements array.According to the different constraints it can prac-tise beam scanning,Widebeam forming interference canceling,sidelobe canceling...

This paper describes an algorithm for adaptive multibeamformer ofnarrowband and wideband systems.The optimal criterion which is the algorithm based onis that choising the suitable weights minimze the output power in the array output undersatisfying the constraints for the beam direction and amplitude.It is able to form N-1 inde-pendent beams for an N elements array.According to the different constraints it can prac-tise beam scanning,Widebeam forming interference canceling,sidelobe canceling and soon.The results of Computer sirnulation based on the algorithm described are given,theseresults illustrate that the algorithm described is quite available for forming multibeam.

论述了一种窄带和宽带多波束形成的算法,这种算法所依据的准则是在波束满足指向和振幅要求的约束条件下使阵列输出功率最小。对于 N 元阵列,可同时形成 N-1个独立波束。根据对约束条件的不同控制,利用这种算法可实现波束扫描,形成宽波束、实现干扰对消或旁瓣对消等。同时还给出了所述算法的计算机模拟结果,结果表明所述算法是很有效的。

 
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