// update subscriptions
	void		fw_pos_ctrl_status_update(bool force = false);
	void		global_position_update();
	void		gps_position_update();
	void		home_position_update(bool force = false);
	void		local_position_update();
	void		params_update();
	void		vehicle_land_detected_update();
	void		vehicle_status_update();