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- It briefly presents the theory for the diffraction over terrain obstacles and describes two different path loss models, the Hata model and a FFT-based model. 本文提出一个新的数学模型,描述压力波在充满黏性不可压缩流体的等向性弹性管中的传输行为。
- The method is adaptive to different path loss models and does not require any hardware modification on network or mobile devices.Moreover, the impact of shadowing is reduced. 该方案不需要对网络设备和移动终端作任何硬件改造,就能普遍适用于各种无线环境和路径损耗模型,同时能有效降低阴影效应的影响。
- COOPERATIVE DIVERSITY UNDER LOG-DISTANCE PATH LOSS MODEL 对数距离路径损耗下的协作分集
- path loss model 路径损耗模型
- The Craig-Cox loss model is used and a numerical example is given. 采用Craig-Cox模型计算气动损失。 给出了有关数值算例。
- And it can get the path loss of any point on single floors of buildings. 该模型既有二维跟踪模型的快速,又有三维跟踪模型的高精度。
- The Windows-based software, AREPS3.0, is applied to compute path loss versus range in the troposphere, using atmospheric information from shipboard weather prediction station. 使用AREPS3.;0软件计算不同距离上的路径损耗,大气信息取自舰载气象站;
- The internal flow field of a two stage turbine with double shafts was simulated by solving the steady Euler equation with loss model. 通过求解由粘性力引入损失的Euler方程,模拟了某型两级双轴涡轮的内部稳态流场。
- And if the duty cycle is within a certain space range KD smaller than 1, otherwise larger than 1. At last the core loss model under the influence of the duty cycle is proposed. 当占空比在某一区间范围内K_D小于1,超出这一区间则大于1;
- The Quasi-three dimensional calculation program of S2 stream surface incorporated with some different loss model is developed on the base of solving Euler equation. 摘要基于求解欧拉方程的方法,发展了能将多种不同损失模型耦合起来的涡轮S2流面准三维计算程序。
- In the paper,we apply the robust parameter analysis method based on the loss model to the structural optimization and design of a miniature and ultraprecise milling machine tool. 将基于损失模型的稳健性参数分析法应用于小型超精密铣床的结构优化设计过程中。首先,建立了系统的刚体运动学空间误差模型;
- Then critical technologies of simulation system are discussed, including frame processing structure, FH sequence generator, simulation models of path loss and multipath channel, simulation of signal propagation delay and jamming signal etc. 其次,讨论了仿真系统实现的关键技术,包括帧处理结构、跳频序列发生器、路径损耗与多径信道仿真模型、信号传播延时及干扰信号的仿真等。
- In this paper,described were establishment of insertion loss model of reactive muffler and its application in exhaust muffler design on model 492Qgasoline engine. 描述了抗性消声器插入损失模型的建立及其在492Q汽油机上的应用。
- They cleaved a path through the wilderness. 他们在荒原中开辟出一条路。
- However, ranging measurements are often subject to errors, induced by multipath signals and variations in path loss, unreliable hardware or antenna connectors, or imperfection in measurement models. 可是,距离测量往往容易出现错误,多径信号和路径损耗变化,不可靠的硬件或者天线连接器,或者不理想的测量模型都可能导致错误出现。
- The loss are divided into the loss by the changing of fracture width and the loss from fracture face to matrix, and the loss model of working fluid is established. 将钻井完井过程中的漏失分为由裂缝宽度变化引起的漏失和裂缝面向基块的漏失两部分,建立了工作液漏失模型。
- In this paper,the performance of wireless DNC system is analyzed by testing the performance parameters of wireless signal and proposing the path loss formula of radio wave propagation in workshop. 通过测试无线信号性能参数并提出车间环境下无线电波路径损耗经验公式,分析了无线DNC系统的性能。
- She squelched along the muddy path. 她沿着泥泞小径格吱格吱地走。
- He was destined to plod the path of toil. 他注定要在艰辛的道路上跋涉。
- The winding loss model of central-tapped transformer in SMPS is different from that of the non-tapped transformer because the two secondary windings work in different time intervals. 中间抽头变压器由于两个副边线圈是分时工作,其线圈损耗模型不同于无抽头原副边线圈同时工作的变压器。
- 今日热词
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- 深远海浮式风电平台 - deep-sea floating wind power platform
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- 京雄高速公路 - Beijing-Xiongan expressway
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- 农业及相关产业增加值 - the added value of agriculture and related industries