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GST – GNSS Pseudorange Error Statistics
This message is used to monitor and support RAIM.
$GPGST,gst1,gst2,gst3,gst4,gst5,gst6,gst7,gst8*hh<CR><LF>
Parameters Descriptions Notes
gst1 UTC time from the GGA hhmmss.ss: hh – hour;
mm – minute; ss.ss –
second
gst2 RMS value of the standard deviation of
the range
gst3 Standard deviation of semi-major axis of
error ellipse (meters)
Not supported (empty field)
gst4 Standard deviation of semi-minor axis of
error ellipse (meters)
Not supported (empty field)
gst5 Orientation of semi-major axis of error
ellipse
Not supported (empty field)
gst6 Standard deviation of latitude error
(meters)
gst7 Standard deviation of longitude error
(meters)
gst8 Standard deviation of altitude error
(meters)
hh Checksum hex number (2 – character)
<CR><LF> End of message