Satellite access service to remote areas is expensive, so Internet access points are scarce and often Shared.
偏远地区的卫星接入服务价格昂贵，所以，互联网接入点稀少而且往往要共用。
Free images can also be old and if countries want a certain image it may well be outside the remit of free data access, so they have to pay for a satellite to take it.
免费的图像也可能是陈旧的，如果各国想要某些特定的图像，它很可能在免费数据获取的范围之外，因此它们不得不付费让卫星拍摄这样的图像。
The terminals will increase bandwidth capacity and offer a more affordable way for the vessels to access military and commercial satellite networks worldwide, the officials said.
该终端将增加带宽容量，并为舰船提供一种更经济实惠的方式来访问世界范围内的军用和商用卫星网络。
Through a satellite link, the shipping company can access the ship's operations or "black box" voyage data recorder.
货船公司只要通过一个卫星连接就可以连接到船只的操作系统或者“黑匣子”的航行数据记录。
The industry has been threatened by the internet which provides instant online access, digital cable and satellite providers with competitive prices.
有了网上点播、数字电视及卫星电视等多种价廉物美的视频服务，本行业只能在互联网这一洪水猛兽面前瑟瑟发抖。
Helios provides transparent access to services executing on satellite kernels by extending a traditional message-passing interface to include remote message passing.
Helios为那些在卫星内核上执行的服务提供了透明的访问，这是通过扩展一种传统的消息传递接口以包含远程消息传递完成的。
Each MUOS satellite features two payloads — a wideband code division multiple access (WCDMA) payload and a legacy UHF payload.
每个MUOS卫星配备了两个有效载荷——宽频码分多址(WCDMA)有效载荷和传统UHF有效载荷。
The SNEP will employ the MPM1000 Net Centric Waveform Satellite Modem to provide Multi-Frequency-Time Division Multiple Access Bandwidth on demand technology for tactical mobile operations.
该SNEP将采用MPM1000网络中心波形卫星调制解调器，为战术机动作战提供所需的多频时分多址接入带宽技术。
Both satellites were used for telecommunications, with the us satellite an active part of Iridium's network of 66 craft which provide satellite telephone access to more than 250, 000 people worldwide.
两卫星都是用于电信，美国卫星还是铱网络66颗卫星的一部分，用于提供世界超过250,000人的卫星电话服务。
Pretty much anybody with Internet access can add information to Google’s satellite map images using Map Maker.
几乎任何能上网的人都能使用地图制作工具(Map Maker)在谷歌的卫星地图上添加信息。
The wired network without access to rural areas of direct broadcast satellite public operation is about to pull open prelusive.
面向有线网络未通达的农村地区的直播卫星公益化运营即将拉开序幕。
As frequency divided multiplex access is widely adopted in communication satellite system, strict frequency spectrum limits on modulator is mandated.
通信卫星的频分复用机制，对卫星通信系统的发送信号频谱成型提出了严格的要求。
In order to improve the spectrum usage of the up-band of fixed satellite service(FSS), an unlicensed access scheme is presented.
为了提高卫星固定业务上行频段的频谱利用效率，提出了一种无授权接入该频段的方案。
A new MF-TDMA based MAC protocol, called CRRAP (combined reservation and random access protocol), was proposed for broadband multimedia satellite networks.
提出了一种基于MF- TDMA的宽带卫星MAC协议联合随机预约接入协议(CRRAP)。
This essay describes the characteristics of access to the Internet using GEO satellite links and the methods used to solve problems caused by long delay of satellite links.
阐述了利用对地静止轨道GEO卫星链路接入因特网的特点，介绍了目前为解决卫星链路时延长带来的问题所采用的一些方法。
Therefore, satellite communication is considered as a preferential mode for remote village access, both technologically and economically.
因此卫星通信被认为是边远村通在技术经济上优先选用的通信方式之一。
Based on introducing architecture of satellite ATM networks, this thesis analyses and compares the key features of basic multiple access methods in satellite link.
本文在介绍卫星AT M网络结构基础上，分析和比较了卫星链路基本多址联接方式的关键特性。
By comparing several multiple access modes, an optimal scheme is chosen which is suitable for a cost-effective satellite data communication system.
通过几种多址方式的比较，选出最适合于高性能、低价格卫星数据通信系统的优越方案。
By emulating the global traffic service through a LEO satellite mobile communication system under different access schemes, the performance of the networks are analyzed.
并参照某实际系统参数，对不同接入方案准则下的全球话务服务进行了系统仿真，得到了相应的系统性能参数。
The ability to access satellite systems reduces ground station dependence and protects against jamming and direct tracking attempts.
能接入卫星系统的能力，减少了它对地面台站的依赖性，并可避免敌方干扰和直接跟踪。
For multiple access communication systems with high propagation delay (e. g., satellite communication systems), an active repeat random access protocol is proposed.
针对具有长传播时延的多址系统(如卫星通信系统)，提出了主动重发的随机多址协议。
For multiple access communication systems with high propagation delay (e. g., satellite communication systems), an active repeat random access protocol is proposed.
针对具有长传播时延的多址系统(如卫星通信系统)，提出了主动重发的随机多址协议。
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