传统RTK以外的生活：基于卫星的精确点定位

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？答案是精确的点定位（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，您可以确定传感器适应主要条件。它将使用最相关的卫星信号，并自动为您提供最佳可用位置。

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.

在移动电池服务薄弱或不可用的地方，我们需要多少次测量？还是在该领域，尽管卫星数量增加，我们还需要更多的卫星吗？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，网络服务不可用或不可用，暂时或更长的时间。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？

这些都是可能不适用于每天平均情况的问题，但它们确实经常发生，以确保对用户的竞争优势。

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.

What is SmartLink?

SmartLink is a GNSS correction service where data is transmitted by satellites.

在这种情况下，该职位的质量就是这样：

Naturally, the situation above assumes that the auxiliary satellites are visible.

What is SmartLink fill?

SmartLink填充也是GNSS校正服务，该服务由卫星传输，但它可以桥接RTK的中断并保留最多10分钟的位置，以厘米的准确性长达10分钟。

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.
• Are you working in a place where there is an RTK correction, but it is not available for some reason? Despite this, would you like to continue doing your job with centimeter-level accuracy without stopping and without RTK corrections for a temporary period of time (approx. 10 minutes)? SmartLink Fill is the solution.

要了解有关SmartLink服务的更多信息，请contact your local Leica Geosystems representative.