Real-time processing

The Terrestrial Engine modules are the Trimble 4D Control Server core processing modules. They are used to process the raw total station measurements of a mission. The stored data can then be used by:

• the Integrity Monitor modules to compute positions in a local grid, to display a map and the differences between reference and later measurements over time,
• the Alarm Manager module to create Alarms depending on predefined threshold,
• the Trimble Report Generator to generate editable and printable output.

Module for processing real-time terrestrial measurements:

• Each Terrestrial Engine RT module uses the real-time measurements provided by one or several Data Collector modules, which all pertain to the same mission. (For terrestrial measurements imported from files, use the Terrestrial Engine PP module.)

Station position monitoring in real-time can be performed by the following processors (Processing Engines):

• The Synchronizer module is responsible for collecting the data of the latest epoch from all (selected) reference stations and sending it to the Processing Engines as one epoch of data.
• The RTX Engine module connects to the Trimble CenterPoint™ RTX™ service and thus can provide station positions derived from RTK solutions which are based on highly accurate clock and orbit messages.
• The RTK Engine provides fixed GNSS solutions on baselines of up to 35 km.
• Additionally, the NMEA Engine synchronizes NMEA baseline data from all NMEA Receiver stations and possibly applies a filter upon it.

Combined processing of total station measurements with GNSS data and additional sensor data:

• An Integrated Survey Engine module processes, in an integrated approach, total station measurements of a mission in combination with GNSS data received from a GNSS Engine, such as the Post Processing Engine or the Network Motion Engine.

• AHigh Rise module is used for monitoring High Rise structures during construction. It uses high-quality coordinates from its parent RTK Engine, optionally corrected by total station measurements and deflections provided by an In-Place Inclinometer module, for high-precision position adjustment and position update over time.
• The Webcam Service module enables the utilization of video-capable webcams. It is required for configuring alarm definitions at Trimble 4D Control Web if video clips are supposed to be associated with an alarm event.

Note - As it is the case throughout this product, the availability of these modules depends on the current licensing policy and status of Trimble 4D Control Server.