推进欧盟-亚洲卫星导航产业合作

为何选择伽利略 Why Galileo

伽利略是欧洲唯一的全球卫星导航系统

Galileo is to be the one and only European Global Navigation Satellite System.

伽利略导航验证卫星IOV(资料来源ESA –P.Carril)

Galileo IOV satellite (Credit: ESA - P.Carril)

美国的GPS俄国的GLOGNASS 与日本及中国所发展的区域系统均为受军方控制的军系统。这些系统确实提供民用服务,但在遇到服务冲突时可能出现关闭或精度调降的情况

GPS (US), Glonass (Russia) and the other regional systems developed by Japan and China are military systems under military control –indeed they provide a civil service but that civil service could be either switched off or made less precise when desired e.g. in case of conflict.

欧洲伽利略卫星以民用服务为主,并能与GPSGLONASS系统联合运作,GNSS的新主力。在正式运作后,提供更加精的定位服务,即便城市的高建筑也无法干扰卫星号。

European independence is the chief reason for taking this major step. But, by being interoperable with GPS and GLONASS, Galileo will also be, in a very real way, the new cornerstone of the global navigation satellite system (GNSS). This worldwide system will henceforth be under civilian control. And with its full complement of satellites, more than the current GNSS systems, Galileo will allow positions to be determined accurately even in high-rise cities, where buildings obscure signals from today's satellites.

伽利略卫星增强多项功能,信号更易追踪与取得,并且抵抗干扰与反射的能力也得到增强。相较于美国与俄国的系统,欧洲的GNSS系统提供更精准可靠的服务。这意味着伽利略系统(及EGNOS)将催生无数全新、的对可靠性要求十分严格的服务、应用及商机。

Galileo will also offer several signal enhancements making the signal more easy to track and acquire and more resistant against interference and reflections. European GNSS will deliver much more precise and much more reliable services than the American and Russian systems. This means Galileo and EGNOS will make possible a whole new and virtually limitless range of ‘reliability-critical' services, applications and business opportunities.

此外,伽利略系统将改善GNSS信号的整体可用性及覆盖率。由于卫星的位与倾角,相较于其他系统,伽利略系统将在高纬度地区取得更广的覆盖围。

In addition, Galileo will improve the overall availability and coverage of GNSS signals. Thanks to the location and inclination of the satellites, Galileo will achieve a better coverage at high latitudes than other systems.

借助伽利略系统,欧洲及全球能够更好更全面地利用卫星导航带来的机会。欧洲与全球的GNSS接收器与设备造商应用及服务提供因此从新商机获利。

So, with Galileo, Europe and the world will be able to exploit the opportunities provided by satellite navigation to a much fuller extent than currently possible. As a consequence, European and global GNSS receiver and equipment manufacturers, application providers and service operators will all benefit from novel business opportunities.

伽利略系统: 度、可用性、覆盖

Galileo in short: precision, availability, coverage

度:伽利略系统结合其他GNSS系统的信号,更多数量的卫星将给使用者提供更高的精度。对大多数的位,六到八颗伽利略卫星在与GPS信号结合后,使得位定位精确到几公分之内

Precision : By combining the use of other GNSS signals with Galileo the higher number of satellites available to the user will offer higher precision. From most locations, six to eight Galileo satellites will be visible which, in combination with GPS signals, will allow positions to be determined up to within a few centimetres.

可用性为数众多的卫星改善高楼林立的城市的信号接收度,通常建筑物可能阻碍卫星在低平面的发射的信号。

Availability : The high number of satellites will also improve the availability of the signals in high-rise cities, where buildings can obstruct signals from satellites that are low on the horizon.

覆盖范围相较GPS,伽利略因为位置与倾的优势,在高纬度提供佳的覆盖围。

Coverage: Galileo will also provide a better coverage at high latitudes than GPS, thanks to the location and inclination of the satellites.

 

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。