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- optical antenna gain 光学天线增益
- optical antenna gain factor 光学天线增益因子
- Corresponding optical antenna and spectroscope are designed. 设计了和上述推证相关的光学天线和分光镜等。
- In the uplink coverage calculations the increased antenna gain of the multiple beam concepts needs to be considered. 在上行链路覆盖计算法中,全向波束概念所增加了的天线增益需要考虑。
- With the help of statistic principle, the estimtion ormulas ofthe antenna gain loss, beam width and siedlobe level in sparse array are derived. 应用概率统计原理,导出了具有幅相误差、元失效时稀疏阵天线阵增益损失、束宽度、向、瓣电平的估计公式、得出一些有益结论。
- The acceptance angles and optical gains of optical antenna,such as telescope system, optic taper, reflect taper were measured. 通过对望远系统、光纤光锥、反射光锥等光学天线的接收角及光学增益进行的大量实验。
- Simulation results show that the frequency range obtained for VSWR<2 is much wider, and as the frequency increases, the antenna gain become bigger. 仿真结果显示其VSWR<2的频带范围较大,而且随着频率的增加,天线的增益有增大的趋势。
- Laser rangefinder consists of laser emission source, receiving system and optical antenna. 半导体激光测距仪主要由激光发射光源、接收系统和光学天线组成。
- 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。
- The results show that the field of view (FOV) of hemispherical lens and CPC are wider and its gain is higher compared with other optical antennas. 分析表明:半球透镜和CPC视场较大,增益值高。
- An FSO communication system is presented in this paper firstly, including optical antenna, transceiver module, and pointing, acquisition and tracking (PAT) subsystem. 本文首先构建了一个FSO系统总体方案,包括光学天线、收发电路和对准、捕获与跟踪(PAT)子系统。
- On the basis of discussing the analyzed restraint relationship between the link loss and the spot-beam antenna gain a new spot-beam model of optimum design named link level balance spot-beam model is proposed. 在分析链路损耗与点波束天线增益之间制约关系的基础上,提出了一种新的点波束优化设计模型?链路电平平衡点波束模型。
- The calibration as the whole system like corrections of the antenna gain, attenuation of LISN and conversion into 3 meters in measurement distance is performed in MSA338E and PC software. 整个系统通过MSA338E和PC软件来补偿宽频天线的天线增益、LISN的衰减量,以及向3m法的转换等。
- While in large cells, where the power may limit the system capacity, the increased antenna gain requires less power to maintain each link, and results in larger supportable cell ranges. 在大区制,当功率限制系统容量时,增加了的天线增益只需更小的功率来维持每条链路。因此,便可支持(覆盖)较大的范围。
- This dissertation chooses received directly system, at the same time makes the simple introduction to the heterodyne receiver, and then carries on the preliminary analysis on optical antenna. 本文选用的是直接检测接收机的实现方案,同时对外差接收机也做了简单介绍,并对光学天线的类型和各自的结构特点进行了初步的分析。
- This paper provides some processing techniques for the radius conservation of light spot called light spot preservation(LSP) technique using in the optical antenna system of multi-ring detection. 本文从多环检测接收平面对光斑直径的稳定性要求出发,讨论激光天线系统的光斑稳定技术,称为光斑保持技术。
- antenna gain to noise temperature 天线增益-噪声温度比
- Some conventional optical antennas like hemispherical lens, compound parabolic concentrator (CPC), Cassegrain telescope were analyzed with the software of ZEMAX. 针对非视线大气光通信的需求,利用ZEMAX软件对半球透镜、复合抛物面聚光器(CPC)和卡塞格伦望远镜等光学天线进行了性能分析。
- Evaluation of Uncertainty on Antenna Gain Measurement 天线增益测量的不确定度评定
- His optic nerve was hurt in an accident. 他的视神经在一次事故中受到损伤。