GNSS的未来防护

作者：伯恩哈德·里希特（Bernhard Richter），十月2016

2003年，欧盟（EU）和欧洲航天局（ESA）就伽利略导航计划达成了一致性。那时，欧盟由15个成员国组成，这个数字并不是唯一在此期间几乎翻了一番的人。

The ambitious target of having a functioning equivalent of the U.S. GPS by 2008 was deferred year after year for a number of reasons, primarily, albeit not only, due to difficulty in justifying its financing. The financial and banking crisis of 2007, triggered by the housing bubble, resulted in government debt crises and has delayed the programme ever since. Now, it seems, the conditions surrounding the Galileo programme have stabilised, which is clear to see in the nine Galileo satellites that are currently active.

在2015年11月的制造商和欧洲GNSS机构的年度会议上，2016年宣布了六个新卫星，并在接下来的两年中又增加了八个卫星。这种快速的扩展意味着用户很快将在困难条件下的职位可用性取得重大改善。到2020年到2020年，伽利略的30颗卫星的全部运营能力（FOC）似乎是安全的，因为保证的预算不太可能（部署20亿欧元和30亿欧元的运营直到2020年）。

The Chinese BeiDou system has offered a navigation service since 2000, but the speed at which the system has been developed recently has surprised all the experts. As if that isn’t enough, Ran Chengqi, Director of the Chinese Satellite Navigation Office, announced an accelerated expansion, with 35 satellites in total and 27 globally available satellites by 2017, rather than 2020 as planned. In many areas of the globe, BeiDou is well established for high-precision navigation and surveying.

GNSS创新能否惠后缓慢etion of Galileo and BeiDou can of course only be estimated and sketched out using GPS. The original, purely military GPS is in a different life cycle and shows how systems can be operated successfully. For years, only worn-out satellites have been replaced with newer generations. A pro-active approach, having sufficiently modern satellites with GPS L5 available as quickly as possible, falls victim to a cost-benefit approach. The lifespan of Block II satellites is also far exceeding expectations and further slowing the pace of the GPS modernisation.

探索下一章：新的高精度接收器带来机会

故事：GNSS的未来防止
第1章：简介
第2章：新的高精度接收器带来机会
第3章：New Leica Viva GS16 GNSS smart antennae future proofs business
第4章：更少可以是更多
第5章：Increasing the stability of RTK correction data