Resolves an absolute position from a single airborne CPR frame plus a
known nearby reference position, per DO-260B SS A.1.7.5. The reference
must be within roughly 180 NM of the true position - typically the
aircraft's own last known position, or the receiver's location as a
fallback for the first message from a new aircraft.
Parameters
format: "even"|"odd"
Whether frame is an even (F=0) or odd (F=1) format frame.
Resolves an absolute position from a single airborne CPR frame plus a known nearby reference position, per DO-260B SS A.1.7.5. The reference must be within roughly 180 NM of the true position - typically the aircraft's own last known position, or the receiver's location as a fallback for the first message from a new aircraft.