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- I lit the smoke with a narrow beam of light. 我用一个小光柱点燃了烟。
- He then shines a narrow beam in horizontally through the pinhole. 然后他通过小孔水平地射入一窄光束。
- Talk on the radio direction finding technology? 无测向能定位吗?
- A thin line or narrow beam of light or other radiant energy. 光线，放射线极细的一条或极窄的一束亮光或其它辐射能
- After correlating with database deposited, the direction finding was realized. 与预存数据库进行相关,完成通信测向。
- A high-power laser beam colliding with a high-energy electron beam produces a narrow beam of gamma rays. 高功率雷射束与高能电子束相碰时，会产生一束极窄的伽玛射线。
- The emphasis in this paper was corner reflector antenna with high-gain, narrow beam and low side-lobe. 选用方向性好、增益高、旁瓣低的角形反射器天线作为本论文的研究重点。
- Sound beam diameter, refracted angle, beam direction, expected flaws, instrument serial number. 声束直径、折射角、波束方向、预计缺陷、仪器编号。
- The rest of the Wilkins Ice Shelf, which totals about 14,500 square kilometers, is holding on by a narrow beam of thin ice. 总面积约在14500平方公里的威尔金斯冰架的其他部分正在支撑着一条狭长的薄冰。
- Direction finding of low probability intercept(LPI) signals is the difficult problem in modern EW system. 低截获概率(LPI)信号的测向是现代电子战的一大难题。
- Chapter 3 obtains the retrieval of parameters of wind above sea surface and ocean wave spectra from simulated narrow beam HF radar backscatter, gives the simulate results. 第三章通过数值模拟的窄波束高频(HF)雷达的海面回波多普勒谱，反演了海面风场、浪高谱等海态参数，并详细介绍了反演的方法、步骤，给出了模拟结果。
- At present, wide-band direction finding is one of important researching subjects in radar and electronic counterwork. 给出了宽带信号测向中求聚焦矩阵的一大类方法,聚焦前后阵列信噪比没有任何损失。
- This paper discusses the direction finding characteristic of passive monopulse seeker. 主要讨论被动单脉冲导引头对旁瓣目标的识别。
- 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。
- This paper analyzes the effects of amplitued-phyase errors and element failure on antenna gain, beamwidth, beam direction, and sidelobe level in sparse array. 围绕天线阵增益、束宽度、向和副瓣电平等指标，分析了幅相误差、元失效对稀疏阵列天线性能的影响。
- However, entrainment can, if applied with appropriate power and frequency, seriously degrade the ability of targeted people to function, and by using the higher radio frequencies, can be focused into a fairly narrow beam. 不过，诱导作用可以，如果应用适当的功率和频率，可以严重退化目标人群的身体机能，并采用较高的无线电频率,可以集中到一个相当狭窄的光束。
- Interferometer direction finding technique is adapted to estimating Direction-of-Arrival (DOA) of a single pulse.It can not resolve multiple signals. 摘要传统干涉仪测向是对单个脉冲信号测向的，对于多信号没有分辨能力，对于线性调频等时变频率信号也不能直接应用。
- In the end, we discuss the direction finding algorithms of UCA for the coherent signal sources and the wide-band cyclostationary signal sources, respectively. 最后,分别对相干信源和宽带循环平稳信源的UCA测向算法进行了研究。
- This paper applies the array manifold interpolation wideband direction finding algorithm on uniform linear array,and gives other two methods of seeking transformation matrix. 文中把阵列流行内插宽带测向算法应用到均匀线阵上,并给出了求变换矩阵的另外两种方法。
- Radar sets generally employ large antennas to produce narrow beams in much the same way as a search-light reflector. 通常雷达采用大型天线以产生狭窄波束,其方法基本上与探照灯反射镜相似。
