Position Monitoring

Use this page to monitor the reference station itself so you can be alerted if the antenna falls over, is moved, and so forth. Enter a position (latitude, longitude, and height) to monitor against, and set up alarms if the threshold is passed.

You can define the acceptable movement of various positioning modes (autonomous, DGPS, RTK, SBAS, RTX, etc.). A Trimble Alloy receiver can both receive corrections and determine a real-time position as well as take the reference position and generate corrections for transmission.

You can also define the amount of time to wait before an alarm is issued. Usually email alerts are configured and sent, but there is also a graphical warning on the web interface. For more information, see E-Mail Alerts.

Select Receiver Configuration / Position Monitoring.

 

This information includes:

Enable – Select this check box to enable position monitoring. You can manually define the input position to monitor against. It does not have to be the base station reference position—it can be on another datum such as the ITRF2014.

Alert Delay – If the Enable check box is selected, this field appears. Enter a time from 10 to 300 seconds for when the receiver should generate an alert after an event is detected.

 

Reference Position to Monitor against:

Reference Latitude – Enter the current latitude in degrees, minutes, and seconds.

Reference Longitude – Enter the current longitude in degrees, minutes, and seconds.

Reference Height – Enter the height above the ellipsoid in meters.

Here – Use the current position to enter the position monitoring position.

Use Reference Station Position – Use the current reference station position to enter the position monitoring position.

Force reference station position – Always use the reference station position for the position monitoring position.

  • Type – Current solution type.

  • Datum – Displays the datum that the position is referenced to.

Suspend CMR/RTCM output if the monitor position is out of tolerance – Avoid unexpected results by suspending CMR/RTCM output if the monitored position is out of tolerance.

Position Type – A row that is highlighted in green indicates the solution type currently being used. If a position moves outside of the defined tolerance, the receiver sends an email alert, and posts a reminder at the top of the web interface to check the position. The current position mode is also highlighted in red. Once the condition clears itself, another email is sent confirming that the position is okay, and the receiver posts a note at the top of the web interface to let you know that an event has occurred and that the administrator needs to clear it. The offending position type is highlighted in yellow.

  • Autonomous – Position has no satellite corrections applied.

  • SBAS – Position using SBAS corrections.

  • VBS – Position using OmniSTAR VBS satellite-based correction service.

  • RTK – Position using a Trimble Real-Time Kinematic (RTK) solution.

  • DGNSS – Code phase differential solution using RTCM corrections.

  • HP – Position using OmniSTAR HP satellite-based correction service.

  • XP – Position using OmniSTAR XP satellite-based correction service.

  • G2 – Position using OmniSTAR HP and G2 satellite-based correction service.

  • RTX – Position using RTX satellite-based correction service.