视距传播的英文

• line-of-sight propagation

• "传播"英文翻译    disseminate; propagate; spre ...
• "超视距传播" 英文翻译 :    propagation beyond the horizon
• "超视距传输" 英文翻译 :    beyond-the-horizon transmission
• "视距传输" 英文翻译 :    line-of-sight transmission
• "直接视距传输" 英文翻译 :    horizon transmission
• "超视距传输系统" 英文翻译 :    over horizon transmission system
• "无线电信号的视距传输" 英文翻译 :    line-of-sight signal transmission
• "视距" 英文翻译 :    apparent distance; apparent easement; distance of sight; eye release; horizon; line of sight (los); line-of-sight coverage; line-of-sight range; los ( line-of-sight ); los line of sight; range of visibility; sight distance; sighting distance; stadia distance; viewing distance; visibility range; visual range
• "变距传动杆" 英文翻译 :    pitch control rods
• "远距传感器" 英文翻译 :    remote transducer
• "远距传感仪" 英文翻译 :    remote sensor
• "远距传物" 英文翻译 :    teleportation
• "总距传动臂" 英文翻译 :    collective-pitch beam
• "传播" 英文翻译 :    1.(广泛散布) disseminate; propagate; spread; (over); diffuse; transmit; run 传播马克思列宁主义 propagate [disseminate] marxism-leninism; 传播知识 spread knowledge; 制止病菌传播 check the spread of germs; 动植物病害传播极快。 animal and vegetable pests propagate with extreme rapidity. 疟蚊传播疟疾。 anopheles mosquitos transmit malaria. 消息象野火般迅速传播开来。 the news spread like wild-fire. 印刷术的发明有助于知识的传播。 the invention of printing helped the diffusion of learning.2.[物理学] propagation; transmission; transmitting; travel 散射传播 scatter propagation; 直线传播 rectilinear propagation
• "视距，视距仪" 英文翻译 :    stadia
• "远距传动风扇" 英文翻译 :    remote fan
• "远距传送系统" 英文翻译 :    remote transmission system
• "超视距" 英文翻译 :    beyond visual range; over the horizon; transhorizon
• "光视距" 英文翻译 :    optical range
• "良视距" 英文翻译 :    eye relief
• "视距表" 英文翻译 :    stadia table
• "视距尺" 英文翻译 :    flagpole; stadia rods
• "视距的" 英文翻译 :    tacheometrical
• "视距点" 英文翻译 :    stadia point
• "视距法" 英文翻译 :    stadia methode; subtense technique

• Therefore , techniques must be developed to mitigate these impairments and improve the location accuracy
  特别是非视距传播效应是导致定位误差的主要原因，必须采用相应的算法来减小它们的影响。
• A position estimate method is proposed , in which the los reconstruction and smoothing technique are combined to mitigate the influence due to nlos propagation
  提出了一种将视距重构与平滑处理相结合减小非视距传播影响的定位方法。
• Depending on the characteristic of the mobile station system can reduce more influence such as multipath interference and none - line - of - sign ( nlos ) propagation than fixed station
  同时利用该系统自身特点，避免了许多在固定站系统中多径干扰、非视距传播等定位难题。
• In order to reduce measure error causing by nlos , it adopt and regard intensity of the signal as right value , construct some tdoa measurement value again with the priori information
  为了减少非视距传播nlos引起定位参数测量误差，采用以信号强度为权值，用先验信息重构部分tdoa测量值。
• Due to multipath effect , multiple access interference ( mai ) , near - far effect , and mainly the non - li ne - of - sight ( nlos ) propagation , the errors in the estimated location parameters and position location occur
  在cdma蜂窝网的定位中，引起定位参数估计误差与定位误差的因素有非视距传播效应、多径传播效应、多址干扰及远近效应。
• At first , by using the feature that the excess delays of nlos propagation follow the exponential distribution , the los propagation parameters are reconstructed and the toa parameters measured from all bs are preprocessed . then , the ms ' s position is estimated by the los locating algorithm with the preprocessed data . finally , to mitigate the effect of the errors in reconstructed parameters , the estimated results are smoothed
  首先，利用非视距传播时延服从指数分布的特点，对不同基站一次测量的数据进行预处理，重构视距传输参量；然后，对处理后的数据采用视距定位算法估计移动台位置；最后，对估计结果进行平滑后处理，以减小重构出的参量误差的影响，进一步提高定位精度。
• In 3g communication system , the most promising location method was the locating arithmetic based on the time of arrival and the time difference of arrival ( toa / tdoa ) of signal , or the angle of arrival of signal ( aoa ) . however , either the arithmetic based on toa or that based on aoa was badly affected by the none line of sight ( nlos ) phenomenon
  在第三代移动通信系统中,最有前景的定位方式是基于信号到来时间/时间差( toa / tdoa )或信号到来角( aoa )的定位算法。但不管是基于信号到来时间的算法还是基于信号到来角度的算法,定位信号的非视距传播效应( nlos )都会对其造成严重的影响,在影响移动定位精度的诸多因素中nlos效应被公认为是最主要的因素。
• Based on the facts that time of arrival ( toa ) of the first multipath signal is always most close to that of los propagation and angle of arrival ( aoa ) of the first multipath signal is not always most close to that of los propagation among all multipath signals in nlos propagation environment , a location algorithm is proposed to mitigate the influence of nlos propagation , which effectively reduces the feasible region of a ms in macrocells
  依据在非视距传播环境下存在的以下两个事实：第一，最先到达多径信号的波达时间总是最接近直达波的波达时间。第二，最先到达多径信号的波达方向并不一定最接近直达波方向。针对宏蜂窝系统，从有效减小移动台可行域的角度，提出了一种减轻非视距影响的定位算法。
• In cellular envirorunents , because of the influence of several adverse factors , such as muitipath , non - line - of sight propagation , noise , interference and channel frequency characteristics , radio statistics measuremenis like tdoa , toa and aoa related to mobile position , the performance of location algorithms mny be significantly degraded and the position estimation of ms is inevitably biased
  在蜂窝网络环境中，由于受多径、非视距传播、噪声、干扰和信道频率特性等多种不利因素的综合影响，使tdoa 、 toa 、 aoa等与移动台位置有关的电波特征测量值不可避免地出现较大误差，从而使各种定位算法的性能显著下降，造成移动台位置估计出现较大偏差。