用处于移动蜂窝电话信号覆盖范围内的居民数除以总人口就可算出。
This is calculated by dividing the number of inhabitants within range of a mobile cellular signal by the total population.
此次信号覆盖范围包括二环、三环、CBD、金融街、中关村等地区。奥运期间此服务免费。
The service, free of charge during the Olympics, covers the Second and Third ring roads, CBD, Financial Street, and Zhongguancun.
现场运用表明，系统具有状态监测实时性强、信号覆盖范围广、信息传输灵活可靠、运营成本低的特点。
Field operation shows that such a system has the characteristics of strong real-time state monitoring, wide signal coverage, flexible and reliable data transmission and low operational cost.
然而，目前相对比较成熟的WLAN技术仅能实现单跳无线接入，其信号覆盖范围较小且只能布设在有线网络附近，不能满足更大范围的无线网络覆盖需求。
However, the relatively mature techniques of WLAN can't satisfy people's requirement for large coverage of wireless network since it can only realize single-hop wireless access.
相形之下，手机信号具有覆盖范围广、成本低的优点，虽然速度会有些慢，但用手机几乎可以随时随地上网。
By comparison, mobile phone masts can cover a huge geographic area comparatively cheaply, and although their connection speed will be low, it can be applied almost immediately.
更有效的一种方法是让电视直播通过运用分散的网络辐射装置发出讯号，覆盖所有可用的移动网络，从而尽可能大范围地向所有掌上设备散播无线信号。
A more efficient approach for live TV is to “multi-cast” a signal to all handsets using a separate radio network overlaid on the existing mobile network.
通过对地面卫星信号覆盖区内的多普勒频率偏移及不确定性范围的计算，给出了卫星导航系统信号的多普勒频率偏移与接收机位置之间的关系。
By calculating the Doppler shift and its uncertainty in the signal covering area, the relation between Doppler shift and the position of the receiver is obtained.
并基于遥测信号合理化接收，导出天线覆盖范围的数值计算方法。
Then basing on the rational receive of telemetry signal, we have educed the numerical value calculating method of antenna covering range.
磁感应与模拟输出线性位置传感器提供的信号，是成正比的定位磁铁的位置和覆盖测量范围可达200毫米。
Magnetic-inductive linear position sensors with analog output provide a signal that is proportional to the position of the positioning magnet and cover measuring ranges of up to 200 mm.
而直放站天线是直放站的重要组成部分，直接影响到直放站的覆盖范围和信号质量。
And the repeater antenna is an important part of the repeater system, which has a direct affect on coverage and signal quality.
设备安装方便，有效的延伸了信号的覆盖范围，比较好的解决了楼层低且密集的区域的深度覆盖。
Besides, the equipment is relatively easy to install, enabling in-depth coverage signal extension to lower-level, dense residential areas.
在移动通信系统中，为了保证一定范围的信号覆盖，通常使用功率放大器来对信号放大。
In the mobile communication system, we usually use power amplifier to enlarge the pow of the transmited signal in order to assure the Coverage in some range.
在移动通信系统中，为了保证一定范围的信号覆盖，通常使用功率放大器来对信号放大。
In the mobile communication system, we usually use power amplifier to enlarge the pow of the transmited signal in order to assure the Coverage in some range.
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