Decodes the 7-bit movement field of an ADS-B surface position message (BDS 0,6) to ground speed in knots.
The raw 7-bit movement field, 0-127.
Ground speed in knots, or undefined if the field reports no information (0) or is out of the defined range (>124).
Decodes the 7-bit movement field of an ADS-B surface position message (BDS 0,6) to ground speed in knots.