推进欧盟-亚洲卫星导航产业合作

伽利略计划 The Programme

伽利略是欧洲的全球卫星导航系统,提供民用的高精度且具保证的全球定位服务。它能够GPSGLONASS协同运作。

Galileo is Europe’s own global navigation satellite system, providing a highly accurate, guaranteed global positioning service under civilian control. It is inter-operable with GPS and GLONASS, the two other global satellite navigation systems.

通过提供作为的双频率,伽利略将实现精度缩小到公尺围内的实时定位。它能保证除了极端情况外的服务可用性,并会在几秒之内告知用户任何卫星故障,使其适合用于安全关键应用,例如车辆导航列车运行和飞机着陆。

By offering dual frequencies as standard, Galileo will deliver real-time positioning accuracy down to the metre range. It will guarantee availability of the service under all but the most extreme circumstances and will inform users within seconds of any satellite failure, making it suitable for safety-critical applications such as guiding cars, running trains and landing aircraft.

首两个实验导航卫星GIOVE-A-B,分别在2005年和2008年发射,为伽利略系统获得了由国际电信联盟(International Telecommunication Union)的无线电频率并测试伽利略关键技术。

The first two experimental navigation satellites, GIOVE-A and –B, were launched in 2005 and 2008 respectively, reserving radio frequencies set aside for Galileo by the International Telecommunications Union and testing key Galileo technologies.

四个作业卫星(operational satellites)中首两个卫星于20111021日发射, 验证伽利略在太空和地球上的可行性。另两个卫星2012年发射。在轨验证(In-Orbit Validation, IOV)阶段完成后,其他卫星将于2015年左右完成发射并达到初始作业能力(Initial Operational Capability , IOC)

Then on 21 October 2011 came the first two of four operational satellites designed to validate the Galileo concept in both space and on Earth. Two more will follow in 2012. Once this In-Orbit Validation (IOV) phase has been completed, additional satellites will be launched to reach Initial Operational Capability (IOC) around mid-decade.

此阶段将开始提供开放式服务、搜索和救援以及公共调控服务。随着卫星群的建立,各项新的服务将在测试后发布,以达到全面作业能力(Full Operational Capability , FOC)。

At this stage, The Open Service, Search and Rescue and Public Regulated Service will be available with initial performances. Then along the build-up of the constellation, new services will be tested and made available to reach the Full Operational Capability (FOC).

伽利略将保证高品质及完整的服务,这也其作为第一个完全民用定位系统与以往系统的区别所在

Galileo services will come with quality and integrity guarntees which mark the key differnece of the first complete civil positioning system from the military systems that have come before. 

伽利略的架构

Galileo Architecture

全面部署的伽利略系统由30颗卫星(27个作业卫星+3个活动备用卫星),定位在三个环绕地球的中轨道(Medium Earth Orbit, MEO)平面,距离地球上空23222公里,轨道平面与赤道倾角56度。

The fully deployed Galileo system consists of 30 satellites (27 operational + 3 active spares), positioned in three circular Medium Earth Orbit (MEO) planes at 23 222 km altitude above the Earth, and at an inclination of the orbital planes of 56 degrees to the equator.

伽利略地面基础设施将包括:

  • 30-40个监测站
  • 3个控制中心
  • 9个任务上行站
  • 5个遥测、追踪与命令 (TT&C)

The Galileo ground infrastructure will be composed of:

  • 30-40 sensor stations;
  • 3 control centres;
  • 9 Mission Uplink stations;
  • 5  telemetry, tracking and command (TT&C) stations

 

 

根据欧盟地平线2020科研和创新框架计划第641615号协议,欧盟资助了全球卫星导航(亚洲)项目。