XAGF — GNSS Anti-Drift Filter
Configures the anti-drift filter that prevents false position movement when the vehicle is stationary or moving slowly.
Format
- Query:
>QXAGF< - Set (enable/configure):
>SXAGF1,{HDOP_LIMIT},{SPEED_THRESHOLD},{MOTION}< - Delete/disable:
>SXAGFU< - Response (enabled):
>RXAGF1,{HDOP_LIMIT},{SPEED_THRESHOLD},{MOTION}< - Response (disabled):
>RXAGFU<
| Field | Description |
|---|---|
HDOP_LIMIT | Maximum HDOP to apply the filter, encoded as HDOP x100 |
SPEED_THRESHOLD | Speed threshold encoded as mph x10 |
MOTION | 1 = apply only when stationary, 0 = always |
Example
>SXAGF1,200,50,1<
>QXAGF<
>RXAGF1,200,50,1<
>SXAGFU<
>QXAGF<
>RXAGFU<
Notes
- Helps reduce GNSS drift when parked.
- Often paired with motion detection via XAICMT.
Defaults and Limits
Udisables and restores defaults.- Default:
HDOP_LIMIT = 2.0,SPEED_THRESHOLD = 5 mph,MOTION = true. HDOP_LIMITis encoded as HDOP x100 andSPEED_THRESHOLDas mph.