# GNSS relative positioning information in NED frame. The NED frame is defined as the local topological system at the reference station.
uint64 timestamp # time since system start (microseconds)
uint64 timestamp_sample # time since system start (microseconds)
uint32 device_id # unique device ID for the sensor that does not change between power cycles
uint64 time_utc_usec # Timestamp (microseconds, UTC), this is the timestamp which comes from the gps module. It might be unavailable right after cold start, indicated by a value of 0
uint16 reference_station_id # Reference Station ID
float32[3] position # GPS NED relative position vector (m)
float32[3] position_accuracy # Accuracy of relative position (m)
float32 heading # Heading of the relative position vector (radians)
float32 heading_accuracy # Accuracy of heading of the relative position vector (radians)