The article reviews the international new allocation in the band 1 300～1 350MHz to Radio Navigation-Satellite Service(RNSS)at WRC-2000,and analyzes the limitation and potential risk in utilization of this band by Radio Navigation-Satellite Service uplink signal.
从国际频率划分规定的角度,回顾了2000年世界无线电通信大会(WRC-2000)对1300～1350MHz频段做出卫星无线电导航业务新划分的背景、研究过程、最终划分结果及相关条款等历史状况,同时对卫星无线电导航业务上行信号使用该频段存在的限制和风险进行了分析及评述。
radionavigation-satellite service
卫星无线电导航业务
aeronautical radionavigation-satellite service
卫星航空无线电导航业务
maritime radionavigation-satellite service
卫星水上无线电导航业务
earth station in the radio navigation-satellite service
无线电导航卫星业务的地面站
aeronautical radionavigation service
航空无线电导航业务
radiodetermination-satellite service
卫星无线电测定业务
maritime radio navigation service
海上无线电导航业务
aeronautical fixed radio service
固定无线电导航业务
mobile earth station in the radio determination-satellite service
无线电定位卫星业务的移动地面站
fixed earth station in the radiodetermination satellite service
无线电定位卫星业务地面站
orbiting satellites carrying amateur radio
业余无线电用轨道卫星
four-course radio range station
四航道无线电导航台
aeronautical radio aids
航空无线电导航设备
Marine Radio Navigation
船舶无线电导航海上无线电导航
Radio and satellite-based navigation systems have greatly reduced the need for large lighthouses in sighting land.
无线电和卫星导航系统已大为降低了对在可视陆地范围内建大型灯塔的需要。
satellite emergency position-indicating radio beacon
卫星紧急无线电示位标
tracking station (place from which the movements of satellites,missiles,etc are tracked by radar or radio)
（用雷达或无线电追踪卫星、导弹等的）跟踪站.
radionavigation land statio
无线电导航陆地电台