
Customized NMEA Sentences
Rev 3.1 Jul.20
49
41113737
$PSWIEPE Details
EPE is the horizontal and vertical estimated position error based on HDOP and
VDOP.
The following table explains the $PSWIEPE sentence format:
$PSWIEPE,20190905,060310.00,10.5,7.6,4.6,6.0,7.3*56
Note: "Uncertainty" is the predicted error between the NMEA position and the actual position.
This uncertainty is tuned so that the actual position is inside the circle of uncertainty with
around 1-sigma.
Table 6
-
5: $PSWIEPE Data Format
Name
Example
Units
Description
Message ID
$PSWIEPE
$PSWIEPE header
UTC Date
20190904
Coordinated Universal Date Format:
yyyymmdd
UTC Time
060310.00
Coordinated Universal Time Format:
hhmmss.ss
3D EPE
10.5
meter
Position 3D uncertainty
2D EPE
7.6
meter
Position 2D uncertainty
Latitude EPE
4.6
meter
Latitude uncertainty
Longitude EPE
6.0
meter
Longitude uncertainty
Height EPE
7.3
meter
Height uncertainty
Checksum
56
Termination
<CR><LF>
End of message termination