Two-Level Synthetic Fuzzy Evaluation on Ground Satellite Communication Countermeasures System Effectiveness 地基卫星通信对抗系统效能二级模糊综合评估
The research will shed light on the theory and practice of designing and judging near ground ultraviolet free optical communication system. 这对近地层紫外自由光通信系统的设计和性能评价具有一定的理论指导作用和现实意义。
The Research of Ground Station RF Units in the Ka-band Communication System Ka频段抗干扰卫星通信系统地球站射频单元研究
Under the present economic and technological condition, we can only use ground communication system to transmit signals. 在目前经济和技术条件下,只能选择地面通信系统传输信号。
In this paper, basing on the analysis of the mobility, we compare the satellites network with the ground network, and come up with a serial of algorithms of mobility management in the satellite constellations communication system. 本文在对卫星星座通信系统中卫星的移动性进行研究的基础上,将卫星网络与地面网络加以对比,提出了适合卫星星座通信系统的移动性管理策略。
Analysis of Characteristics and Parameters of Ground Communication Web Stations 'Spatial by Airborne Surveillance System 机载监测系统对地面通信网站空间特性参数的测量分析
The constitution and characteristics of ground to space tactics communication system of air-force is also introduced. 介绍了航空兵地空战术通信系统的组成与特点。
The system consists of three subsystems: the Onboard Controller System, the Ground Supervision Center, and wireless Communication System. 本文结合捣固车的工作特点,对捣固车远程测控系统进行整体设计,包括:车载控制器、地面监控中心和无线通信链路。
Design for Ground Interface Communication Board in Hig-rate Logging System 高速测井系统中地面接口通信板的设计
Preventing Thunder and Connecting Ground for Base Station of Mobile Communication System 移动通信系统基地站的防雷与接地
This paper compares the ground mobile communication system and LEO satellite mobile communication system, then designs a CAC for LEO satellite communication system. 本文通过对比地面移动通信系统和低轨卫星移动通信系统,为低轨卫星通信系统设计了一种呼叫接入控制策略。
TDRSS plays an important role in increasing its coverage rate of the mediate/ low orbit aircraft and decreasing the amount of ground telemetry stations in the satellite communication system. 它的天基设计思想,增大对中低轨道航天器的覆盖率、减少地面测控站的数量,从根本上解决了通信测控的高覆盖率问题,在空间技术发展中起到了极其重要的作用。
To reduce the LEO satellite mobile communication systems rely on ground mobile communication system, LEO satellite mobile communication systems must be introduced ISLs. 为了降低卫星移动通信系统对地面移动通信系统的依赖,系统必须引入星际链路。
Finally, in order to send the number and other information to the control center on the ground, the system is designed with an Ethernet communication module, which facilitates the system accessing to the mine monitoring system. 最后,为了将巷道内的人员数量等信息传送至地面监控室,系统设计了以太网通信模块,便于接入煤矿监控系统。
On ground communications, dual-polarized antenna polarization diversity can communicate, when a better communication system against the anti-multipath fading characteristics; in satellite communications we can polarization isolation sending and receiving. 在地面通信中,双极化天线可以实现极化分集通信,同时也让通信系统有更好的抗多径衰落特性;在卫星通信中可以实现收发的极化隔离。
In the present conditions, the simplest solution is using existing ground mobile communication base stations to provide supplement service for the system capacity "hot spots", where the user density is high. 在目前的条件下,最简单的解决方案就是对用户密度高,系统容量大的热点区域,利用现有的地面移动通信基站进行补充。