Surveying with the Receiver
P/N 7010-0557 www.topconpositioning.com
3-19
The geodetic coordinates displayed on the Geo tab are
always computed in WGS84 and have four solution types.
• Standalone – where receiver computes 3D coordinates
in autonomous mode without using differential
corrections.
• Code differential – where the Rover receiver computes
the current relative coordinate in differential mode
using only pseudo ranges.
• RTK float – where the Rover receiver computes the
current relative coordinates in differential mode using
both pseudo ranges and phases; however, with a float
solution, the phase ambiguity is not a fixed integer
number and the “float” estimate is used instead.
• RTK fixed – where the Rover receiver computes
current relative coordinates, with ambiguity fixing, in
differential mode.
The LQ field reflects the status of the received differential
messages and contains the following information:
• Data link quality in percentage
• Time (in seconds) elapsed since the last received
message
• Total number of received correct messages (dependent
on the message type received)
• Total number of received corrupt messages (dependent
on the message type received)
If the receiver is not (for some reason) receiving differential
corrections, or if none of the ports has been configured to
receive differential corrections, the LQ field will either be
empty or it will look like this: 100%(999,0000,0000).
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