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Appendix A – Ensuring optimal operation
In order to maximise performance and ensure optimal operation, there are a number of areas to consider
during installation and operation of the RT3000 v4 system. Table 29 lists the topics to pay attention to.
Table 29: Optimal operation checks
Installation
Antennas installed with same orientation
Antennas installed clear of obstructions
Antennas able to see same constellation of satellites
Antennas and cables routed clear of sources of EMI
Unit mounted rigidly in vehicle
Unit and antennas unable to move independently
Unit mounted away from direct sunlight or sources of high or very low air flow
Appropriate antivibration mounts used if necessary
Unit has a stable, uninterrupted power supply
Appropriate CAN isolation is used
Configuration
Dual antenna set up as per OxTS guidelines
CAN output configuration below suggested maximum message limit and lowered
appropriately for other messages on the CAN bus
Differential corrections enabled and configured
Secondary antenna separation distance measured as accurately as possible
Ethernet output enabled and monitored during vehicle operation
Vibration levels are set to normal (higher levels will reduce confidence in IMU error
models)
GNSS environment set to Open skies (lower settings will reduce confidence in
GNSS error models)
A good warm up as been performed in RTK and an improved configuration
committed to the unit
Pre-drive checks
Ensure all equipment is mounted securely
Differential corrections are being received and the unit is in RTK position mode
Position accuracy is being received over ethernet
All cable connections are secure
Initialisation
Good GNSS conditions for dual antenna static initialisation (open skies, no
multipath)
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