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- signal attenuation model 信号衰减模型
- Two color pyrometers were developed to solve the problem of signal attenuation by intervening smoke or fumes. 为了解决由烟或气所引起的信号衰减问题，研制出了双色高温计。
- In initial stage of decomposition, litter loss accorded with an exponential attenuation model. 分解初期,枯枝落叶的损失符合指数衰减模型。
- What is the maximum distance that 10BASE-T will transmit data before signal attenuation affects the data delivery? 什麽10BASE-T将传输资料在讯号衰退影响资料传输之前最大距离?
- Long cable lengths and high signal frequencies contribute to greater signal attenuation. 长缆线长度和高讯号频率产生较大的讯号衰减。
- To ensure that signal attenuation value not exceeding tolerance, the network proper place to prevent signal amplifier. 为了保证信号衰减不超过容人值，应在网络中适当的位置防止信号放大器。
- Other issues, such as signal interference and signal attenuation, can also cause a lack of connectivity or intermittent connectivity problems. 像信号干扰和信号衰减等其他问题也可能导致连接中断或连接不稳定等问题。
- The research on infrared signal attenuation caused by solid motor exhaust plume is very important to detection and guidance of infrared signal. 固体火箭发动机排气羽流对红外制导信号的衰减研究,对红外信号的探测与制导具有重要的理论和应用价值。
- In view of the defect of big noise and signal attenuation which lie in LV power line communication, it applies DSSS communication technology. 针对低压电力线载波通信中存在的背景噪声大、信号衰减大等缺点,采用了直序扩频通信技术。
- Abstract: On the basis of ultrasonic attenuation model, a portable detector used in void content of carbon-fiber reinforced plastics in aeronautic field is developed. 摘 要: 摘要针对航空领域专用的碳纤维复合材料板材，以超声波的声衰减模型为基础，研制了用于孔隙率检测的便携式超声仪器。
- The combination of the effects of signal attenuation and impedance discontinuities on a communications link is called insertion loss. 结合在通讯链结上的讯号衰减和阻抗不连续的效应被称为插入损失。
- For example, now commonly used FR-4 material, at some GHz frequency dielectric loss at the time of (dielectric loss) on signal attenuation has a great impact, may not be combined. 例如，现在常用的FR-4材质，在几个GHz的频率时的介质损(dielectric loss)会对信号衰减有很大的影响，可能就不合用。
- Result shows that monomial exponential attenuation model can be used to simulate decay process of fallen woods. The decomposition constant of Abies fallen wood is 0.0168/a(r 2=0.9483),while fallen wood of Picea is 0.0150/a(r 2=0.8895). 研究表明 ;云冷杉倒木的腐烂分解过程符合单项指数衰减模型 ;冷杉倒木的分解常数为 0 .;0 1 6 8/a( r2 =0
- Considering the nonlinear affects of various parameters on rain attenuation,we propose a new rain attenuation model based on evolutionary neural network and compare it with the ITU-R model. 本文在考虑多个参数对雨衰减非线性影响的基础上,建立了基于进化神经网络的雨衰减模型,并与ITU-R模型进行了比较。
- The result of simulation by the software Matlab shows that signal attenuation and phasic excursion in high frequency is feasible for high speed communication over power networks in aeroplane. 仿真结果显示,飞机供电网络对高频信号的衰减和相位偏移影响不大。
- Signal attenuation accompanished by long-distance transmission and intersymbol interference (ISI) caused by mulitipath propagation are the main factors influencing the performance of underwater acoustic remote control systems. 长距离传输的信号衰减以及多径传播所造成的码间干扰是影响水声遥控系统性能的主要因素。
- For the relative deep target lay-ers in China, the low-cut filter can be used for compensating the signal attenuation of high frequency and make it a proper instantaneous dynamic range of instrument. 针对我国较深的勘探目的层,用较高的低截滤波来补偿深层高频的弱信号,使之装入仪器的瞬时动态范围有独到的作用。
- The correlation between signal attenuation and moisture absorption of the cable is studied,and a measurement method for cable moistureproof performance by using transmission attenuation is proposed. 研究了信号衰减与电缆吸潮的相关关系,提出以传输衰减表征线缆防潮性能的测量方法;安排了正交试验,并对试验结果及诸影响因素进行了讨论,提出了绝缘芯线外层的防潮措施。
- By sea clutter and ground clutter modeling,electron jammer modeling atmosphere attenuation modeling,the cruise missile flight con. 通过建立杂波模型、电子干扰模型以及大气衰减模型,分析了巡航弹飞行环境对雷达探测性能的影响。
- In this paper,discussions are made on the widely applied intensity attenuation models of seismic hazard analysis: the point-source model introduced by Cornell,C. A. and the fault-rupture model given by Der Kiureghian and A. 本文讨论在地震危险性分析中目前使用广泛的地震烈度衰减模型;即Cornell建立的点源模型和洪华生(A.;H-S
