public override void Unpack(ObjectStream obj)
 {
     z_speed    = obj.OutputInt16();
     y_speed    = obj.OutputInt16();
     x_speed    = obj.OutputInt16();
     altitude   = obj.OutputInt32();
     longitude  = obj.OutputInt32();
     latitude   = obj.OutputInt32();
     vehicle_id = obj.OutputUInt16();
 }
 public override void Unpack(ObjectStream obj)
 {
     yaw_rate   = obj.OutputInt16();
     pitch_rate = obj.OutputInt16();
     roll_rate  = obj.OutputInt16();
     z_accel    = obj.OutputInt16();
     y_accel    = obj.OutputInt16();
     x_accel    = obj.OutputInt16();
     vehicle_id = obj.OutputUInt16();
 }