User's Guide

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2.4 Checking Performance
Quality of the real-time and high-precision positioning by RTAP2U is visible on the
device LED and on the RTAP2U Viewer. The RTAP2U Viewer provides the satellite
signal status, positioning mode, accuracy, and map view in a user-friendly interface.
2.4.1 Positioning Mode
RTAP2U functions in four positioning modes depending on the correction data received.
The modes are Standalone, DGPS, RTK-Float, and RTK-Fix.
 Standalone : When the correction data is unavailable
 DGPS : When meter level correction data is available and applicable
 RTK-Float : When the integer ambiguity is estimated as a float number
 RTK-Fix : When the ambiguity is fixed as an integer
The mode and accuracy improves from Standalone to DGPS, RTK-Float, and RTK-Fix.
It also changes according to the observation environment and the correction data
availability. The real-time mode is visible as the below.
The LED ( ) on the receiver’s front panel indicates the positioning status.①
Positioning
Standalone
DGPS
RTK-Float
RTK-Fix
Click ② Info on the RTAP2U Viewer bottom bar and select POSITION on the top
bar. The positioning status is visible in the Quality section.