从天上到地面

Since the late 1990s, the heavy construction industry has increasingly benefitted from GPS technology to achieve highly accurate grade information to complete earth-moving jobs quickly and precisely.

Without a correction of the satellite signals from a reference station with a known position, a machine control solution’s GPS system would have an accuracy only higher than a couple of metres similar to an in-car navigation system. This is not accurate enough for the construction industry that needs positioning precision down to a couple of centimetres.

因此，机器控制解决方案需要使用单个RTK基站或RTK网络的技术来接收校正的信号，该技术是永久GPS和/或GNSS接收器的网络，该网络的组合数据用于其组合数据纠正卫星的传输错误。

HXGN SmartNet是基于Leica Geosystems的GNSS技术的全球RTK网络服务。通过轻松访问精确的校正数据，用户可以使用国际认可的标准以及灵活且负担得起的订阅选项获得最佳的可用性，可靠性和可追溯性。许多专业人员从HXGN SmartNet受益，可以有效完成日常任务，例如：

• machine control
• 测量
• 工程
• 建造
• agriculture
• 公用事业调查
• archaeology
• 监视
• 还有很多。

丹麦的SmartNet

HXGN SmartNet共有57个参考站，由丹麦地理机构控制和批准，拥有最广泛的RTK网络，可确保全国最佳的覆盖范围。Leica GeoSystems机器控制部提供的3D机控制解决方案使用参考站或参考站网络每秒一次使用校正信号。

Customers subscribed to HxGN SmartNet receive a SIM card for the earth moving machine's GNSS receiver that connects automatically via the telephone network to the closest reference stations. This allows the machine operator to receive centimetre accurate coordinates from the satellites to his in-cabin panel.

“我在日常工作中依赖SmartNet的100％。我收到项目图纸，并使用Leica GeoSystems的Rover CG60标记道路，井，电缆等。我立即看到是否有问题，要么与卫星覆盖范围或SmartNet信号，顺便说一句，很少发生这种信号。

您可以信任的精确定位网络

集成到机器控制解决方案中的自动定位服务仅需要移动数据连接和可接受的Internet连接。这款24/7 GNSS网络RTK和校正服务建立在世界上最大的参考网络上，并未被用户忽略，而它迅速确定了精确的位置。

FuglSanggard A/S的Thomas Petersen说：“我并没有真正注意到校正服务，因为它通常会自动工作，非常好。如果我暂时松散了Internet连接，我会收到机器内部面板上的警告。”

这个服务不断提供highly-available infrastructure and even offers all customers a free text message service that reports if there is a problem with HxGN SmartNet and provides information about atmospheric errors. Built to provide high-precision and high-availability, signals affected by solar storms are restored in a couple of minutes and users can follow the information about solar flares and ionospheric errors on the website.

“卫星的信号可能会受到树木或高建筑物的影响，即使一天中的时间也可能影响卫星的覆盖范围。3D机器控制解决方案如果与小于少于该的连接，则可以在面板上发出警告需要四个卫星或RTK信号太慢，” Christian Hansen解释说，负责丹麦的HXGN SmartNet解决方案。“在大量数据流量的地方，例如，在大型教育机构的附近，校正信号可以延迟。如果由于信号缓慢而导致的不准确性高于5厘米，则系统将自动关闭。”

With several years' of experience as a machine operator Rune Lodall, sales consultant for Leica Geosystems Denmark recalled, "10 years ago the majority of construction companies used base stations on their job site, but today HxGN SmartNet offers such precise data that it is used for most projects, even for grading jobs that require maximum accuracy."