Life beyond traditional RTK: Satellite based Precise Point Positioning

许多测量专业人员可以在没有本地参考网络的情况下发现自己。他们能做什么？答案是确切的点定位（PPP）。

The foundation of Leica Geosystems GNSS technology is RTKplus and SmartLink - the PPP solution, which complements the traditional RTK method. Using a self-learning GNSS sensor, like theLeica Viva GS16, you can be sure that your sensor adapts to predominant conditions. It will use the most relevant satellite signals and provide you automatically the best available position.

The GNSS infrastructure of the RTK technology, which enables us to perform precise and efficient positioning, does have challenges in its theoretical basis. Consider this: in addition to satellites, RTK also needs a network of permanent stations and services, or our own reference station, mobile cellular network service, or the use of our own radio transceiver.

在移动电池服务弱或无法使用的地方，我们需要几次进行测量？还是在该领域，尽管卫星数量增加，但我们需要更多的卫星？它以前发生过，并且将继续发生，由于技术问题，人力短缺或财务原因，网络服务不可用，或者在较长时间内以适当的质量提供或不可用。在我们需要在根本没有本地参考网络的地方进行测量的情况下，会发生什么？

这是一个ll questions that perhaps do not apply to daily, average situations, yet they do occur frequently that ensure a competitive advantage for the user.

The constantly evolving technology of PPP provides an auxiliary solution problem like this, and in the case of Leica Geosystems, it is realised in SmartLink and SmartLink fill services.

什么是SmartLink？

SmartLink是GNSS校正服务，其中数据通过卫星传输。

在这种情况下，该职位的质量就是这样：

自然，上面的情况假设可见辅助卫星。

什么是SmartLink填充？

SmartLink填充也是GNSS校正服务，其中数据通过卫星传输，但它可以桥接RTK的中断并保留最长10分钟的位置以厘米的准确性。

在这种情况下，该职位的质量就是这样：

Obviously, if the reception of RTK correction returns within 10 minutes, then we can anticipate RTK accuracy again. Naturally, the situation above presumes that the auxiliary satellites are visible.

这项服务对用户有什么好处？

• Are you measuring in a distant place where there is no network of reference points, and, accordingly, no RTK network service? Additionally, there is no opportunity for creating your own network based on a lengthy and costly post-processing? With SmartLink, you can start surveying within 30 minutes with ±3 cm 2D accuracy.
• Are you working in a field where there is RTK correction due to cell phone interruptions? Despite this, would you like to continue doing your job with centimetre-level accuracy without stopping and without RTK corrections, for any length of time? SmartLink is the solution.
• 您是否在有RTK校正的地方工作，但由于某种原因无法使用？尽管如此，您是否想继续以厘米级的准确性继续工作，而无需停止，并且在临时时间内没有RTK校正（大约10分钟）？SmartLink填充是解决方案。

要了解有关SmartLink服务的更多信息，请联系您当地的Leica Geosystems代表。

Laszlo Gombas
中欧区域经理
匈牙利总经理