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- large aperture antenna 大口径天线
- For improving SAR's ECCM capability adoption of phased array antenna with large aperture is one of effective measures. 为了改进合成孔径雷达的ECCM能力,采用大孔径相控阵天线具有重要意义,是有效的措施之一。
- The large Hoop Truss Deployable Antenna (HTDA) in the space, with large aperture, light mass, big flexible character and so on, is type flexible multi-contact system. 空间大型环形可展天线具有展开口径大、质量轻、柔性大等特点,是一个典型的多柔体结构。
- By combining backfire principle and focusing mechanism in a single antenna system the backfire feed Cassegrain antenna makes a sm all aperture antenna having the electrical performance of a large Cassegrain antenna. 背射馈源卡氏天线将背射原理和聚焦原理综合于同一个天线系统之中 ,这就使小口径天线 (与天线波长比 )具有大型卡氏天线的电性能。
- Usually, a large aperture lens will give better results. 若使用大光圈的镜头,效果当然更理想。
- What lense do you use? Ultra large aperture requires? and flash? 用尽旧镜微距能力,专人指导使用微距滤镜,拍尽微距世界!
- The proposed EBG-backed circularly polarized aperture antenna is designed to operate in X- and V-band frequencies. 本论文将所提出的覆背式电磁能隙圆极化槽孔天线分别设计在X频带及V频带上。
- The full-wave spectral-domain analysis is proposed to parametrically study an aperture antenna with a coplanar waveguide feed. 摘要:在本计画中,我们应用了全波频谱分析法来精确地测量利用共面波导管馈入的孔径天线效能。
- The simple formulae of fast calculating aperture antenna directivity and gain are derived using antenna beamwidths. Applied range of these formulae are analyzed and discussed. 导出了用天线方向图的半功率波束宽度快速计算口径天线方向性系数和增益的简单表达式,分析讨论了这些公式的应用范围。
- The principle of the system of interferometer in large aperture image spectrometer has been expatiated. 提出了大孔径干涉型成像光谱仪的原理,并展示了攻关样机和实验数据。
- The system has large aperture and low F number due to the requirement of large FOV. 空间推扫相机的光学系统要求具有大视场、大口径、低F数等特点,据此设计了一种3波段光学系统。
- Characteristics of the developed rectangular aperture antenna and slit-loaded circular-tapered monopole antenna are then examined in time and frequency domain at certain plane cuts. 本论文所提及之矩形槽孔天线与狭缝槽负载之圆形渐开单极天线被用来分析其在某些平面切面在频域和时域的特性。
- The merits of this interferometer are adjustable sensitivity, antivibration and very large aperture. 这种干涉仪的优点在于灵敏度可调,抗振性强,易做成大口径。
- Design of Catadioptric Large Aperture Three Group Elements Infrared Zoom System[J]. 引用该论文 王鹏;赵文才;胡明勇;翁志成.
- A precise measurement system of high reflectivity for scanning large aperture components in high power laser system is developed. 为了测量高功率激光传输系统中大口径高反射率元件,研制了一种镜面扫描的精密测量系统。
- To meet the requirement of the specification of the large aperture component in ICF system, the sub-aperture stitching interferometer is introduced. 为了满足我国ICF系统大口径光学元件的检测需要,提出了子孔径拼接干涉检测的方法。
- A new method to calibrate a large aperture infrared opto-electric system by using a small aperture illumination collimator is introduced in detail. 摘要介绍了一种用小口径照明光管定标大口径红外光电系统的新方法。
- fundamental theory of aperture antenna 面天线基本理论
- It is a difficult task to measure the reflectance, transmittance and optical uniformity of an optical coating with very large aperture. 在大口径光学元件高质量薄膜的制造过程中,对于透射率和反射率的均匀性测试是非常困难的。
- Near-Zone Field Strength of Aperture Antenna 口径面天线辐射近区场强计算