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- This paper presents a high power feed system for 7.3 m Cassegrain antenna. 介绍用于?7.;3 m Cassegrain天线的高功率馈源喇叭的设计。
- Cassegrain antenna is a kind of dual-reflector antenna, with characteristics of high-gain, narrow-beam, suppressed side lobes and agility in designing. 卡塞格伦天线是一种双反射面天线,其特点是高增益、锐波束、低旁瓣、设计灵活。
- Are you willing if your day off set by your employer? 你是否愿意接受雇主所安排的休息日?
- A microstrip array antenna is designed and manufactured to work as the feed of the Cassegrain antenna system. 研制了一个用作卡塞格伦天线系统的馈源的微带天线阵。
- Loads distort every component of the structure of the Cassegrain antenna system. 载荷使卡塞格伦天线结构的每个部分发生变形。
- It has also been used to calibrate the same radiometer fitted with 800 mm and 368 mm diameter Cassegrain antenna. 文中还介绍了装有800mm和368mm直径卡塞格伦天线的同一幅射计的定标实验.
- A microstrip reflectarray cylindrical Cassegrain antenna system is designed, which has an fixed beam deviation angle in the azimuth. 设计了一个微带反射阵柱形卡塞格伦天线系统,使该天线系统在方位面方向产生了固定的波束偏移。
- The characteristics is used to design a ring-focus Cassegrain antenna and it was found that it has higher gain and lower sidelobe level. 文中还利用上述特性设计了一个大口径的焦环卡塞格伦天线 ,结果显示 :它有较高的增益和较低的副瓣电平
- This antenna is a 20m modified cassegrain antenna,its feed is a corrugated horn,and adopts multiple?moulding autotrack mono?pulse method. 天线采用20m卡塞格伦式天线,馈源为波纹喇叭,多模单脉冲自跟踪方案;
- Thus it provides a theoretical basis for design and adjustment of refector antenna, particularly the modified Cassegrain antenna. 为反射面天线尤其是修正卡塞格伦天线的设计和调整提供了理论依据.
- The ON or OFF settings for the SET options can be specified at several levels. 可以在多个级别上指定SET选项的ON或OFF设置。
- But as she came off set she put on a mask, and proceeded to play conkers with a friend.Mask? 我们走近些,便看到了整个布景。
- Complicated mathematical relations exist between beam direction angle and mechanical angle of the antenna pedestal in Cassegrain antenna system discussed in this paper. 文中介绍的卡塞格伦天线系统中,波束指向角度和天线座机械角度有着复杂的数学关系。
- Another thing which was pretty cool to see was Dan Radcliffe hanging around off set playing his guitar!!! 另一件非常酷的事情是我们看到丹尼尔在拍摄休息的间隙弹起了他的吉它。
- A high quality 2.5m Cassegrain antenna in a feed system of the conical corrugated horn has been designed by using a modification method of the special shaping of both mainreflector and subreflector. 本文报道了圆锥波纹喇叭作为馈源系统的2.;5m卡赛格伦天线的设计;修正其主、副面的形状;使该天线获得高效率(71
- The design and analysis of a low sidelobe Cassegrain antenna using resistive hyperboloid are presented in detail. The surface resistivity of hyperboloid can be expressed in terms of the target low sidelobe aperture distribution. 本文用沿径向有阶梯变化的表面电阻的双曲面来设计低旁瓣卡塞格伦天线 ,给出了双曲面表面电阻值与所需的低旁瓣口径场分布理论值的关系式。
- This paper analyzes the errors caused by antenna feedline of Cassegrain antenna in monopulse radar since these errors can have an influence on radar tracking ac curacy and stability. 分析了单脉冲雷达采用卡塞格伦天线时 ,其天馈线所产生的误差 ,该误差影响了雷达跟踪精度和稳定性。
- Falsely issuing exclusive value-added tax invoices or other invoices to defraud export tax refunds or to off set taxes refers to any false issuance intended for others or himself, or letting others falsely issue for him, or induce others to falsely issue. 虚开增值税专用发票或者虚开用于骗取出口退税、抵扣税款的其他发票,是指有为他人虚开、为自己虚开、让他人为自己虚开、介绍他人虚开行为之一的。
- For a dual-reflector,such as Cassegrain antenna,the total scattered field should be the phase summation of the diffracted and reflected fieldsfrom the mainreflector and subreflector. 对于卡塞格伦等型式的双反射器天线,总散射场应该是主、副面绕射场,副面镜面场和反射绕射场等各项的相位相加。
- Millimeter-waves inverse Cassegrain antenna with polarization-rotation, efficient wide scan angle,light weight and small size, which is used in modern radar systems, is studied in this paper. 本文旨在研究毫米波极化正交变换倒置卡塞格伦天线,它主要应用于小尺寸轻质量的广角扫描雷达系统中。