Every phased - array rader needs thousands of phase shifters , which control the phase of radiator elements in the antenna aperture surface to scan beams fast 每部相控阵雷达需要上千个移相器,才能控制天线孔径面上各辐射单元的相位变化进而实现快速扫描。
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Abstract : this paper describes the procedure required for an image geometric operation . a actual example for converting image of scanning beam form to coreline form is given 文摘:介绍了图像几何运算的两个步骤，并以按水平扫描线排列的数字图像转换为按外极线排列的图像为例，具体阐述了图像几何运算的方法。
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Phase array radar can scan beams fast by controlling the phase of radiator elements in the antenna aperture surface , which shows many excellences such as agility , change celerity and multifunction . therefore , phase array radar is fit for the necessity of combat readiness 这种雷达通过电的方式控制天线孔径面上各辐射单元的相位变化，以实现波束的快速扫描，使其具有灵活、变化快速、多功能等优点，适应战备需要。
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Thirdly , according as the difference of precision , we may short the steps of edge extraction and improve the efficiency of algorithm with dilation algorithm . at last , with felicitical using algorithm of scanning beam , we attain the rigor edge image with texture 2 )在边界连接中，根据对实际情况的研究，提出了一种具有通用意义边界连接算法3 )根据精度要求的不同，可以利用膨胀算法简化轮廓提取的步骤，以提高算法的时间效率。
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Firstly , the complex characteristics of the seal images caused in the process of producing conditions are analyzed . to solve these problems respectively , the circularity clusters and the ostu method are firstly used to realize the shape classification and threshold processing of different seal images . then the image denoise is performed well by scanning beam seed filling and labeling algorithm 论文中首先分析了印鉴图像由于盖印条件造成的图像本身的一些复杂特点，提出了运用圆形度聚类和最大方差比算法对图像进行形状分类和阈值处理，随后利用扫描线种子填充算法和贴删标签算法进行噪声的去除等预处理。
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As the vital development of the millimeter wave guidance technology , phased array antennas use electrical control scanning beam , which results to faster scanning velocity , more flexible beam control and higher anti - interference ability . thus it can realize target seeking , tracing , guidance at the same time , and can work in the complex and worsening condition 作为毫米波制导技术的一个重要发展方向,相控阵制导技术中的相控阵天线是采用电控方式扫描波束,扫描速度快、波束控制灵活、抗干扰能力强等,可以同时完成目标搜索、跟踪、引导等多项功能,能工作在日益复杂和恶化的工作环境中。
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In the system , the collimation semiconductor laser - scanned beam scanning two perpendiculars direct of one plane of the measured workpiece at the same time is made . the beams with the dimension information of two perpendiculars direct are processed by the scanning receive system , the high - speed photoelectric transition and electronic data process . two measured results of the diametric directs and ellipse tolerance , etc , parameter , of the turning workpiece on the same plane are obtained by non - contact automatic measurement 在单向激光扫描检测技术的基础之上，提出了一种双向激光扫描检测系统，其采用激光扫描检测技术与特殊光学系统相结合，用准直半导体激光扫描光束对被测工件径向某一截面的两个相互垂直方向同时扫描，经扫描接收光学系统、高速光电变换、电子学系统和微机数据处理系统，对将携带有垂直方向被测量信息的光束进行处理，实现了回转体工件同一截面两个垂直方向的径向尺寸和椭圆度等参数的非接触自动测量，解决了同时非接触测量回转体零件同一截面两个径向尺寸的难题，它具有高速，高精度和非接触自动测量等特点。
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