User's Manual

B GSOF Messages
94 SPSx80 Smart GPS Antenna User Guide
ECEF DELTA
This message describes the ECEF Delta position. It contains the following data:
• Earth-Centered, Earth-Fixed X, Y, Z deltas between the rover and base position,
in meters.
NEU DELTA
This message contains Tangent Plane Delta information. It contains the following
data:
• North, East, and Up deltas of the vector from the base to the rover (in meters)
projected onto a plane tangent to the WGS-84 ellipsoid at the base receiver.
Note – These records are only output if a valid DGPS/RTK solution is computed.
Table B.4 ECEF Delta (Type 6 record)
Field Item Type Value Meaning
0 Output record type Char 06h Earth-Centered, Earth-Fixed (ECEF) Delta output record
1 Record length Char 18h Bytes in record
2–9 Delta X Double Meters ECEF X-axis delta between rover and base station
positions
10–17 Delta Y Double Meters ECEF Y-axis delta between rover and base station
positions
18–25 Delta Z Double Meters ECEF Z-axis delta between rover and base station
positions
Table B.5 NEU Delta (Type 7 record)
Field Item Type Value Meaning
0 Output record type Char 07h Tangent Plane Delta output record
1 Record length Char 18h Bytes in record
2–9 Delta east Double meters East component of vector from base station to rover,
projected onto a plane tangent to the WGS-84 ellipsoid
at the base station
10–17 Delta north Double meters North component of tangent plane vector
18–25 Delta up Double meters Difference between ellipsoidal height of tangent plane
at base station and a parallel plane passing through
rover point