diff --git a/src/modules/navigator/datalinkloss.cpp b/src/modules/navigator/datalinkloss.cpp
index 46dd0d3da0a82c44375aa6e44344e06e224f67a4..3c92ed41fe6ca9af6b9c27e2fe12fbf30d63994b 100644
--- a/src/modules/navigator/datalinkloss.cpp
+++ b/src/modules/navigator/datalinkloss.cpp
@@ -97,15 +97,15 @@ DataLinkLoss::set_dll_item()
 
 	switch (_dll_state) {
 	case DLL_STATE_FLYTOCOMMSHOLDWP: {
-			_mission_item.lat = (double)(_param_commsholdlat.get()) * 1.0e-7;
-			_mission_item.lon = (double)(_param_commsholdlon.get()) * 1.0e-7;
+			_mission_item.lat = (double)(_param_nav_dll_ch_lat.get()) * 1.0e-7;
+			_mission_item.lon = (double)(_param_nav_dll_ch_lon.get()) * 1.0e-7;
 			_mission_item.altitude_is_relative = false;
-			_mission_item.altitude = _param_commsholdalt.get();
+			_mission_item.altitude = _param_nav_dll_ch_alt.get();
 			_mission_item.yaw = NAN;
 			_mission_item.loiter_radius = _navigator->get_loiter_radius();
 			_mission_item.nav_cmd = NAV_CMD_LOITER_TIME_LIMIT;
 			_mission_item.acceptance_radius = _navigator->get_acceptance_radius();
-			_mission_item.time_inside = _param_commsholdwaittime.get() < 0.0f ? 0.0f : _param_commsholdwaittime.get();
+			_mission_item.time_inside = _param_nav_dll_ch_t.get() < 0.0f ? 0.0f : _param_nav_dll_ch_t.get();
 			_mission_item.autocontinue = true;
 			_mission_item.origin = ORIGIN_ONBOARD;
 
@@ -114,14 +114,14 @@ DataLinkLoss::set_dll_item()
 		}
 
 	case DLL_STATE_FLYTOAIRFIELDHOMEWP: {
-			_mission_item.lat = (double)(_param_airfieldhomelat.get()) * 1.0e-7;
-			_mission_item.lon = (double)(_param_airfieldhomelon.get()) * 1.0e-7;
+			_mission_item.lat = (double)(_param_nav_ah_lat.get()) * 1.0e-7;
+			_mission_item.lon = (double)(_param_nav_ah_lon.get()) * 1.0e-7;
 			_mission_item.altitude_is_relative = false;
-			_mission_item.altitude = _param_airfieldhomealt.get();
+			_mission_item.altitude = _param_nav_ah_alt.get();
 			_mission_item.yaw = NAN;
 			_mission_item.loiter_radius = _navigator->get_loiter_radius();
 			_mission_item.nav_cmd = NAV_CMD_LOITER_TIME_LIMIT;
-			_mission_item.time_inside = _param_airfieldhomewaittime.get() < 0.0f ? 0.0f : _param_airfieldhomewaittime.get();
+			_mission_item.time_inside = _param_nav_dll_ah_t.get() < 0.0f ? 0.0f : _param_nav_dll_ah_t.get();
 			_mission_item.acceptance_radius = _navigator->get_acceptance_radius();
 			_mission_item.autocontinue = true;
 			_mission_item.origin = ORIGIN_ONBOARD;
@@ -163,9 +163,9 @@ DataLinkLoss::advance_dll()
 
 		/* Check the number of data link losses. If above home fly home directly */
 		/* if number of data link losses limit is not reached fly to comms hold wp */
-		if (_navigator->get_vstatus()->data_link_lost_counter > _param_numberdatalinklosses.get()) {
+		if (_navigator->get_vstatus()->data_link_lost_counter > _param_nav_dll_n.get()) {
 			warnx("%d data link losses, limit is %d, fly to airfield home",
-			      _navigator->get_vstatus()->data_link_lost_counter, _param_numberdatalinklosses.get());
+			      _navigator->get_vstatus()->data_link_lost_counter, _param_nav_dll_n.get());
 			mavlink_log_critical(_navigator->get_mavlink_log_pub(), "too many DL losses, fly to airfield home");
 			_navigator->get_mission_result()->stay_in_failsafe = true;
 			_navigator->set_mission_result_updated();
@@ -173,7 +173,7 @@ DataLinkLoss::advance_dll()
 			_dll_state = DLL_STATE_FLYTOAIRFIELDHOMEWP;
 
 		} else {
-			if (!_param_skipcommshold.get()) {
+			if (!_param_nav_dll_chsk.get()) {
 				warnx("fly to comms hold, datalink loss counter: %d", _navigator->get_vstatus()->data_link_lost_counter);
 				mavlink_log_critical(_navigator->get_mavlink_log_pub(), "fly to comms hold");
 				_dll_state = DLL_STATE_FLYTOCOMMSHOLDWP;
diff --git a/src/modules/navigator/datalinkloss.h b/src/modules/navigator/datalinkloss.h
index 292be27f867a3bb30ac2743ca620c460e9e40005..dc4d06dabca5a3bed6dc954ee824d10445d2291e 100644
--- a/src/modules/navigator/datalinkloss.h
+++ b/src/modules/navigator/datalinkloss.h
@@ -59,16 +59,16 @@ public:
 
 private:
 	DEFINE_PARAMETERS(
-		(ParamFloat<px4::params::NAV_DLL_CH_T>) _param_commsholdwaittime,
-		(ParamInt<px4::params::NAV_DLL_CH_LAT>) _param_commsholdlat, // * 1e7
-		(ParamInt<px4::params::NAV_DLL_CH_LON>) _param_commsholdlon, // * 1e7
-		(ParamFloat<px4::params::NAV_DLL_CH_ALT>) _param_commsholdalt,
-		(ParamInt<px4::params::NAV_AH_LAT>) _param_airfieldhomelat, // * 1e7
-		(ParamInt<px4::params::NAV_AH_LON>) _param_airfieldhomelon, // * 1e7
-		(ParamFloat<px4::params::NAV_AH_ALT>) _param_airfieldhomealt,
-		(ParamFloat<px4::params::NAV_DLL_AH_T>) _param_airfieldhomewaittime,
-		(ParamInt<px4::params::NAV_DLL_N>) _param_numberdatalinklosses,
-		(ParamInt<px4::params::NAV_DLL_CHSK>) _param_skipcommshold
+		(ParamFloat<px4::params::NAV_DLL_CH_T>) _param_nav_dll_ch_t,
+		(ParamInt<px4::params::NAV_DLL_CH_LAT>) _param_nav_dll_ch_lat, // * 1e7
+		(ParamInt<px4::params::NAV_DLL_CH_LON>) _param_nav_dll_ch_lon, // * 1e7
+		(ParamFloat<px4::params::NAV_DLL_CH_ALT>) _param_nav_dll_ch_alt,
+		(ParamInt<px4::params::NAV_AH_LAT>) _param_nav_ah_lat, // * 1e7
+		(ParamInt<px4::params::NAV_AH_LON>) _param_nav_ah_lon, // * 1e7
+		(ParamFloat<px4::params::NAV_AH_ALT>) _param_nav_ah_alt,
+		(ParamFloat<px4::params::NAV_DLL_AH_T>) _param_nav_dll_ah_t,
+		(ParamInt<px4::params::NAV_DLL_N>) _param_nav_dll_n,
+		(ParamInt<px4::params::NAV_DLL_CHSK>) _param_nav_dll_chsk
 	)
 
 	enum DLLState {
diff --git a/src/modules/navigator/follow_target.cpp b/src/modules/navigator/follow_target.cpp
index 53e68a72fa16958d91bbf2291f6806bd389d419f..de1df7f4f59139998d937d6f40f41f80de74dc68 100644
--- a/src/modules/navigator/follow_target.cpp
+++ b/src/modules/navigator/follow_target.cpp
@@ -79,11 +79,11 @@ void FollowTarget::on_inactive()
 
 void FollowTarget::on_activation()
 {
-	_follow_offset = _param_tracking_dist.get() < 1.0F ? 1.0F : _param_tracking_dist.get();
+	_follow_offset = _param_nav_ft_dst.get() < 1.0F ? 1.0F : _param_nav_ft_dst.get();
 
-	_responsiveness = math::constrain((float) _param_tracking_resp.get(), .1F, 1.0F);
+	_responsiveness = math::constrain((float) _param_nav_ft_rs.get(), .1F, 1.0F);
 
-	_follow_target_position = _param_tracking_side.get();
+	_follow_target_position = _param_nav_ft_fs.get();
 
 	if ((_follow_target_position > FOLLOW_FROM_LEFT) || (_follow_target_position < FOLLOW_FROM_RIGHT)) {
 		_follow_target_position = FOLLOW_FROM_BEHIND;
@@ -250,7 +250,7 @@ void FollowTarget::on_active()
 				_follow_target_state = TRACK_VELOCITY;
 
 			} else if (target_velocity_valid()) {
-				set_follow_target_item(&_mission_item, _param_min_alt.get(), target_motion_with_offset, _yaw_angle);
+				set_follow_target_item(&_mission_item, _param_nav_min_ft_ht.get(), target_motion_with_offset, _yaw_angle);
 				// keep the current velocity updated with the target velocity for when it's needed
 				_current_vel = _est_target_vel;
 
@@ -275,7 +275,7 @@ void FollowTarget::on_active()
 					_last_update_time = current_time;
 				}
 
-				set_follow_target_item(&_mission_item, _param_min_alt.get(), target_motion_with_offset, _yaw_angle);
+				set_follow_target_item(&_mission_item, _param_nav_min_ft_ht.get(), target_motion_with_offset, _yaw_angle);
 
 				update_position_sp(true, false, _yaw_rate);
 
@@ -299,7 +299,7 @@ void FollowTarget::on_active()
 			target.lon = _navigator->get_global_position()->lon;
 			target.alt = 0.0F;
 
-			set_follow_target_item(&_mission_item, _param_min_alt.get(), target, _yaw_angle);
+			set_follow_target_item(&_mission_item, _param_nav_min_ft_ht.get(), target, _yaw_angle);
 
 			update_position_sp(false, false, _yaw_rate);
 
diff --git a/src/modules/navigator/follow_target.h b/src/modules/navigator/follow_target.h
index e3d000055192846f1e556ca711970b6201efb656..9119d84e5c9c727feab0f06ee304fc4278dcec37 100644
--- a/src/modules/navigator/follow_target.h
+++ b/src/modules/navigator/follow_target.h
@@ -90,10 +90,10 @@ private:
 	};
 
 	DEFINE_PARAMETERS(
-		(ParamFloat<px4::params::NAV_MIN_FT_HT>)	_param_min_alt,
-		(ParamFloat<px4::params::NAV_FT_DST>) _param_tracking_dist,
-		(ParamInt<px4::params::NAV_FT_FS>) _param_tracking_side,
-		(ParamFloat<px4::params::NAV_FT_RS>) _param_tracking_resp
+		(ParamFloat<px4::params::NAV_MIN_FT_HT>) _param_nav_min_ft_ht,
+		(ParamFloat<px4::params::NAV_FT_DST>) _param_nav_ft_dst,
+		(ParamInt<px4::params::NAV_FT_FS>) _param_nav_ft_fs,
+		(ParamFloat<px4::params::NAV_FT_RS>) _param_nav_ft_rs
 	)
 
 	FollowTargetState _follow_target_state{SET_WAIT_FOR_TARGET_POSITION};
diff --git a/src/modules/navigator/geofence.cpp b/src/modules/navigator/geofence.cpp
index a183ac4a55f85fd5b79fe6ded696d75aeeefef78..e07965cedffb0ec14fe56ff3897b629a7fa220cf 100644
--- a/src/modules/navigator/geofence.cpp
+++ b/src/modules/navigator/geofence.cpp
@@ -224,8 +224,8 @@ bool Geofence::checkAll(double lat, double lon, float altitude)
 
 	if (isHomeRequired() && _navigator->home_position_valid()) {
 
-		const float max_horizontal_distance = _param_max_hor_distance.get();
-		const float max_vertical_distance = _param_max_ver_distance.get();
+		const float max_horizontal_distance = _param_gf_max_hor_dist.get();
+		const float max_vertical_distance = _param_gf_max_ver_dist.get();
 
 		const double home_lat = _navigator->get_home_position()->lat;
 		const double home_lon = _navigator->get_home_position()->lon;
@@ -268,7 +268,7 @@ bool Geofence::checkAll(double lat, double lon, float altitude)
 	} else {
 		_outside_counter++;
 
-		if (_outside_counter > _param_counter_threshold.get()) {
+		if (_outside_counter > _param_gf_count.get()) {
 			return inside_fence;
 
 		} else {
@@ -568,8 +568,8 @@ int Geofence::clearDm()
 
 bool Geofence::isHomeRequired()
 {
-	bool max_horizontal_enabled = (_param_max_hor_distance.get() > FLT_EPSILON);
-	bool max_vertical_enabled = (_param_max_ver_distance.get() > FLT_EPSILON);
+	bool max_horizontal_enabled = (_param_gf_max_hor_dist.get() > FLT_EPSILON);
+	bool max_vertical_enabled = (_param_gf_max_ver_dist.get() > FLT_EPSILON);
 	bool geofence_action_rtl = (getGeofenceAction() == geofence_result_s::GF_ACTION_RTL);
 
 	return max_horizontal_enabled || max_vertical_enabled || geofence_action_rtl;
diff --git a/src/modules/navigator/geofence.h b/src/modules/navigator/geofence.h
index 9a5412bbaaec0e6dbe4cb6b5dc74ff16276e2f4d..f9ed6f8ac43c989031df3aa0e148e647390a56cc 100644
--- a/src/modules/navigator/geofence.h
+++ b/src/modules/navigator/geofence.h
@@ -124,9 +124,9 @@ public:
 
 	bool isEmpty() { return _num_polygons == 0; }
 
-	int getAltitudeMode() { return _param_altitude_mode.get(); }
-	int getSource() { return _param_source.get(); }
-	int getGeofenceAction() { return _param_action.get(); }
+	int getAltitudeMode() { return _param_gf_altmode.get(); }
+	int getSource() { return _param_gf_source.get(); }
+	int getGeofenceAction() { return _param_gf_action.get(); }
 
 	bool isHomeRequired();
 
@@ -158,12 +158,12 @@ private:
 	map_projection_reference_s _projection_reference = {}; ///< reference to convert (lon, lat) to local [m]
 
 	DEFINE_PARAMETERS(
-		(ParamInt<px4::params::GF_ACTION>) _param_action,
-		(ParamInt<px4::params::GF_ALTMODE>) _param_altitude_mode,
-		(ParamInt<px4::params::GF_SOURCE>) _param_source,
-		(ParamInt<px4::params::GF_COUNT>) _param_counter_threshold,
-		(ParamFloat<px4::params::GF_MAX_HOR_DIST>) _param_max_hor_distance,
-		(ParamFloat<px4::params::GF_MAX_VER_DIST>) _param_max_ver_distance
+		(ParamInt<px4::params::GF_ACTION>) _param_gf_action,
+		(ParamInt<px4::params::GF_ALTMODE>) _param_gf_altmode,
+		(ParamInt<px4::params::GF_SOURCE>) _param_gf_source,
+		(ParamInt<px4::params::GF_COUNT>) _param_gf_count,
+		(ParamFloat<px4::params::GF_MAX_HOR_DIST>) _param_gf_max_hor_dist,
+		(ParamFloat<px4::params::GF_MAX_VER_DIST>) _param_gf_max_ver_dist
 	)
 
 	uORB::Subscription<vehicle_air_data_s>	_sub_airdata;
diff --git a/src/modules/navigator/gpsfailure.cpp b/src/modules/navigator/gpsfailure.cpp
index 94bdf97a38363091d8cc0868a91995319e6586bd..c659e3f4b440022af5f8b9463ec8d749adcb8c60 100644
--- a/src/modules/navigator/gpsfailure.cpp
+++ b/src/modules/navigator/gpsfailure.cpp
@@ -85,9 +85,9 @@ GpsFailure::on_active()
 			 * navigator has to publish an attitude setpoint */
 			vehicle_attitude_setpoint_s att_sp = {};
 			att_sp.timestamp = hrt_absolute_time();
-			att_sp.roll_body = math::radians(_param_openlooploiter_roll.get());
-			att_sp.pitch_body = math::radians(_param_openlooploiter_pitch.get());
-			att_sp.thrust_body[0] = _param_openlooploiter_thrust.get();
+			att_sp.roll_body = math::radians(_param_nav_gpsf_r.get());
+			att_sp.pitch_body = math::radians(_param_nav_gpsf_p.get());
+			att_sp.thrust_body[0] = _param_nav_gpsf_tr.get();
 
 			Quatf q(Eulerf(att_sp.roll_body, att_sp.pitch_body, 0.0f));
 			q.copyTo(att_sp.q_d);
@@ -103,8 +103,8 @@ GpsFailure::on_active()
 			}
 
 			/* Measure time */
-			if ((_param_loitertime.get() > FLT_EPSILON) &&
-			    (hrt_elapsed_time(&_timestamp_activation) > _param_loitertime.get() * 1e6f)) {
+			if ((_param_nav_gpsf_lt.get() > FLT_EPSILON) &&
+			    (hrt_elapsed_time(&_timestamp_activation) > _param_nav_gpsf_lt.get() * 1e6f)) {
 				/* no recovery, advance the state machine */
 				PX4_WARN("GPS not recovered, switching to next failure state");
 				advance_gpsf();
diff --git a/src/modules/navigator/gpsfailure.h b/src/modules/navigator/gpsfailure.h
index 1802031cbc7b0648f7a74e0e7b842f8e7acdaece..a683a7a3d34dc91454304cd9a39ca2cc24ba271e 100644
--- a/src/modules/navigator/gpsfailure.h
+++ b/src/modules/navigator/gpsfailure.h
@@ -57,10 +57,10 @@ public:
 
 private:
 	DEFINE_PARAMETERS(
-		(ParamFloat<px4::params::NAV_GPSF_LT>) _param_loitertime,
-		(ParamFloat<px4::params::NAV_GPSF_R>) _param_openlooploiter_roll,
-		(ParamFloat<px4::params::NAV_GPSF_P>) _param_openlooploiter_pitch,
-		(ParamFloat<px4::params::NAV_GPSF_TR>) _param_openlooploiter_thrust
+		(ParamFloat<px4::params::NAV_GPSF_LT>) _param_nav_gpsf_lt,
+		(ParamFloat<px4::params::NAV_GPSF_R>) _param_nav_gpsf_r,
+		(ParamFloat<px4::params::NAV_GPSF_P>) _param_nav_gpsf_p,
+		(ParamFloat<px4::params::NAV_GPSF_TR>) _param_nav_gpsf_tr
 	)
 
 	enum GPSFState {
diff --git a/src/modules/navigator/mission.cpp b/src/modules/navigator/mission.cpp
index 8ef26e7831d1607f006a062f7b671021aa473a92..20bb8e8e23c4646d692ed0b20c4ff4f686543397 100644
--- a/src/modules/navigator/mission.cpp
+++ b/src/modules/navigator/mission.cpp
@@ -226,7 +226,7 @@ Mission::on_active()
 			set_mission_items();
 		}
 
-	} else if (_mission_type != MISSION_TYPE_NONE && _param_altmode.get() == MISSION_ALTMODE_FOH) {
+	} else if (_mission_type != MISSION_TYPE_NONE && _param_mis_altmode.get() == MISSION_ALTMODE_FOH) {
 
 		altitude_sp_foh_update();
 
@@ -243,7 +243,7 @@ Mission::on_active()
 	}
 
 	/* see if we need to update the current yaw heading */
-	if (!_param_mnt_yaw_ctl.get() && (_navigator->get_vstatus()->is_rotary_wing)
+	if (!_param_mis_mnt_yaw_ctl.get() && (_navigator->get_vstatus()->is_rotary_wing)
 	    && (_navigator->get_vroi().mode != vehicle_roi_s::ROI_NONE)
 	    && !(_mission_item.nav_cmd == NAV_CMD_TAKEOFF
 		 || _mission_item.nav_cmd == NAV_CMD_VTOL_TAKEOFF
@@ -1612,8 +1612,8 @@ Mission::check_mission_valid(bool force)
 
 		_navigator->get_mission_result()->valid =
 			_missionFeasibilityChecker.checkMissionFeasible(_mission,
-					_param_dist_1wp.get(),
-					_param_dist_between_wps.get(),
+					_param_mis_dist_1wp.get(),
+					_param_mis_dist_wps.get(),
 					_navigator->mission_landing_required());
 
 		_navigator->get_mission_result()->seq_total = _mission.count;
diff --git a/src/modules/navigator/mission.h b/src/modules/navigator/mission.h
index b90c0b50a08e827db6b76981c9c533b38f640929..2414ccaa64907f880cac3ffa74717ce287488d78 100644
--- a/src/modules/navigator/mission.h
+++ b/src/modules/navigator/mission.h
@@ -236,10 +236,10 @@ private:
 	bool position_setpoint_equal(const position_setpoint_s *p1, const position_setpoint_s *p2) const;
 
 	DEFINE_PARAMETERS(
-		(ParamFloat<px4::params::MIS_DIST_1WP>) _param_dist_1wp,
-		(ParamFloat<px4::params::MIS_DIST_WPS>) _param_dist_between_wps,
-		(ParamInt<px4::params::MIS_ALTMODE>) _param_altmode,
-		(ParamInt<px4::params::MIS_MNT_YAW_CTL>) _param_mnt_yaw_ctl
+		(ParamFloat<px4::params::MIS_DIST_1WP>) _param_mis_dist_1wp,
+		(ParamFloat<px4::params::MIS_DIST_WPS>) _param_mis_dist_wps,
+		(ParamInt<px4::params::MIS_ALTMODE>) _param_mis_altmode,
+		(ParamInt<px4::params::MIS_MNT_YAW_CTL>) _param_mis_mnt_yaw_ctl
 	)
 
 	struct mission_s _mission {};
diff --git a/src/modules/navigator/navigator.h b/src/modules/navigator/navigator.h
index c83bb58870576a888812c35ec732c29725770ca0..1e7afae7c6f8960bb44c9ba0963c23e4166c0fee 100644
--- a/src/modules/navigator/navigator.h
+++ b/src/modules/navigator/navigator.h
@@ -169,7 +169,7 @@ public:
 	Geofence	&get_geofence() { return _geofence; }
 
 	bool		get_can_loiter_at_sp() { return _can_loiter_at_sp; }
-	float		get_loiter_radius() { return _param_loiter_radius.get(); }
+	float		get_loiter_radius() { return _param_nav_loiter_rad.get(); }
 
 	/**
 	 * Returns the default acceptance radius defined by the parameter
@@ -279,11 +279,11 @@ public:
 	bool		abort_landing();
 
 	// Param access
-	float		get_loiter_min_alt() const { return _param_loiter_min_alt.get(); }
-	float		get_takeoff_min_alt() const { return _param_takeoff_min_alt.get(); }
-	bool		get_takeoff_required() const { return _param_takeoff_required.get(); }
-	float		get_yaw_timeout() const { return _param_yaw_timeout.get(); }
-	float		get_yaw_threshold() const { return _param_yaw_err.get(); }
+	float		get_loiter_min_alt() const { return _param_mis_ltrmin_alt.get(); }
+	float		get_takeoff_min_alt() const { return _param_mis_takeoff_alt.get(); }
+	bool		get_takeoff_required() const { return _param_mis_takeoff_req.get(); }
+	float		get_yaw_timeout() const { return _param_mis_yaw_tmt.get(); }
+	float		get_yaw_threshold() const { return _param_mis_yaw_err.get(); }
 
 	float		get_vtol_back_trans_deceleration() const { return _param_back_trans_dec_mss; }
 	float		get_vtol_reverse_delay() const { return _param_reverse_delay; }
@@ -357,24 +357,24 @@ private:
 	NavigatorMode *_navigation_mode_array[NAVIGATOR_MODE_ARRAY_SIZE];	/**< array of navigation modes */
 
 	DEFINE_PARAMETERS(
-		(ParamFloat<px4::params::NAV_LOITER_RAD>) _param_loiter_radius,	/**< loiter radius for fixedwing */
-		(ParamFloat<px4::params::NAV_ACC_RAD>) _param_acceptance_radius,	/**< acceptance for takeoff */
+		(ParamFloat<px4::params::NAV_LOITER_RAD>) _param_nav_loiter_rad,	/**< loiter radius for fixedwing */
+		(ParamFloat<px4::params::NAV_ACC_RAD>) _param_nav_acc_rad,	/**< acceptance for takeoff */
 		(ParamFloat<px4::params::NAV_FW_ALT_RAD>)
-		_param_fw_alt_acceptance_radius,	/**< acceptance radius for fixedwing altitude */
+		_param_nav_fw_alt_rad,	/**< acceptance radius for fixedwing altitude */
 		(ParamFloat<px4::params::NAV_FW_ALTL_RAD>)
-		_param_fw_alt_lnd_acceptance_radius,	/**< acceptance radius for fixedwing altitude before landing*/
+		_param_nav_fw_altl_rad,	/**< acceptance radius for fixedwing altitude before landing*/
 		(ParamFloat<px4::params::NAV_MC_ALT_RAD>)
-		_param_mc_alt_acceptance_radius,	/**< acceptance radius for multicopter altitude */
-		(ParamInt<px4::params::NAV_FORCE_VT>) _param_force_vtol,	/**< acceptance radius for multicopter altitude */
-		(ParamInt<px4::params::NAV_TRAFF_AVOID>) _param_traffic_avoidance_mode,	/**< avoiding other aircraft is enabled */
+		_param_nav_mc_alt_rad,	/**< acceptance radius for multicopter altitude */
+		(ParamInt<px4::params::NAV_FORCE_VT>) _param_nav_force_vt,	/**< acceptance radius for multicopter altitude */
+		(ParamInt<px4::params::NAV_TRAFF_AVOID>) _param_nav_traff_avoid,	/**< avoiding other aircraft is enabled */
 
 		// non-navigator parameters
 		// Mission (MIS_*)
-		(ParamFloat<px4::params::MIS_LTRMIN_ALT>) _param_loiter_min_alt,
-		(ParamFloat<px4::params::MIS_TAKEOFF_ALT>) _param_takeoff_min_alt,
-		(ParamBool<px4::params::MIS_TAKEOFF_REQ>) _param_takeoff_required,
-		(ParamFloat<px4::params::MIS_YAW_TMT>) _param_yaw_timeout,
-		(ParamFloat<px4::params::MIS_YAW_ERR>) _param_yaw_err
+		(ParamFloat<px4::params::MIS_LTRMIN_ALT>) _param_mis_ltrmin_alt,
+		(ParamFloat<px4::params::MIS_TAKEOFF_ALT>) _param_mis_takeoff_alt,
+		(ParamBool<px4::params::MIS_TAKEOFF_REQ>) _param_mis_takeoff_req,
+		(ParamFloat<px4::params::MIS_YAW_TMT>) _param_mis_yaw_tmt,
+		(ParamFloat<px4::params::MIS_YAW_ERR>) _param_mis_yaw_err
 	)
 
 	param_t _handle_back_trans_dec_mss{PARAM_INVALID};
diff --git a/src/modules/navigator/navigator_main.cpp b/src/modules/navigator/navigator_main.cpp
index 7cd439e2b0a84698fe4fc3da7a6b6062cfc90673..88459620997711a6ad9bdec1e981f90f0458af50 100644
--- a/src/modules/navigator/navigator_main.cpp
+++ b/src/modules/navigator/navigator_main.cpp
@@ -856,23 +856,23 @@ Navigator::publish_position_setpoint_triplet()
 float
 Navigator::get_default_acceptance_radius()
 {
-	return _param_acceptance_radius.get();
+	return _param_nav_acc_rad.get();
 }
 
 float
 Navigator::get_acceptance_radius()
 {
-	return get_acceptance_radius(_param_acceptance_radius.get());
+	return get_acceptance_radius(_param_nav_acc_rad.get());
 }
 
 float
 Navigator::get_default_altitude_acceptance_radius()
 {
 	if (!get_vstatus()->is_rotary_wing) {
-		return _param_fw_alt_acceptance_radius.get();
+		return _param_nav_fw_alt_rad.get();
 
 	} else {
-		float alt_acceptance_radius = _param_mc_alt_acceptance_radius.get();
+		float alt_acceptance_radius = _param_nav_mc_alt_rad.get();
 
 		const position_controller_status_s &pos_ctrl_status = _position_controller_status_sub.get();
 
@@ -893,7 +893,7 @@ Navigator::get_altitude_acceptance_radius()
 
 		if (next_sp.type == position_setpoint_s::SETPOINT_TYPE_LAND && next_sp.valid) {
 			// Use separate (tighter) altitude acceptance for clean altitude starting point before landing
-			return _param_fw_alt_lnd_acceptance_radius.get();
+			return _param_nav_fw_altl_rad.get();
 		}
 	}
 
@@ -1109,7 +1109,7 @@ void Navigator::check_traffic()
 					// direction of traffic in human-readable 0..360 degree in earth frame
 					int traffic_direction = math::degrees(tr.heading) + 180;
 
-					switch (_param_traffic_avoidance_mode.get()) {
+					switch (_param_nav_traff_avoid.get()) {
 
 					case 0: {
 							/* ignore */
@@ -1182,7 +1182,7 @@ Navigator::force_vtol()
 {
 	return _vstatus.is_vtol &&
 	       (!_vstatus.is_rotary_wing || _vstatus.in_transition_to_fw)
-	       && _param_force_vtol.get();
+	       && _param_nav_force_vt.get();
 }
 
 int Navigator::print_usage(const char *reason)
diff --git a/src/modules/navigator/precland.cpp b/src/modules/navigator/precland.cpp
index 13ae2ae1905c00d7b81c4761e79510041d28faf8..5294bfba9934d29e821b4ffa5f04f41a90358ff8 100644
--- a/src/modules/navigator/precland.cpp
+++ b/src/modules/navigator/precland.cpp
@@ -118,7 +118,7 @@ PrecLand::on_active()
 		_target_pose_valid = true;
 	}
 
-	if ((hrt_elapsed_time(&_target_pose.timestamp) / 1e6f) > _param_timeout.get()) {
+	if ((hrt_elapsed_time(&_target_pose.timestamp) / 1e6f) > _param_pld_btout.get()) {
 		_target_pose_valid = false;
 	}
 
@@ -203,7 +203,7 @@ PrecLand::run_state_start()
 		}
 
 		// if we don't see the target after 1 second, search for it
-		if (_param_search_timeout.get() > 0) {
+		if (_param_pld_srch_tout.get() > 0) {
 
 			if (hrt_absolute_time() - _point_reached_time > 2000000) {
 				if (!switch_to_state_search()) {
@@ -353,7 +353,7 @@ PrecLand::run_state_search()
 	}
 
 	// check if search timed out and go to fallback
-	if (hrt_absolute_time() - _state_start_time > _param_search_timeout.get()*SEC2USEC) {
+	if (hrt_absolute_time() - _state_start_time > _param_pld_srch_tout.get()*SEC2USEC) {
 		PX4_WARN("Search timed out");
 
 		if (!switch_to_state_fallback()) {
@@ -434,7 +434,7 @@ PrecLand::switch_to_state_search()
 	vehicle_local_position_s *vehicle_local_position = _navigator->get_local_position();
 
 	position_setpoint_triplet_s *pos_sp_triplet = _navigator->get_position_setpoint_triplet();
-	pos_sp_triplet->current.alt = vehicle_local_position->ref_alt + _param_search_alt.get();
+	pos_sp_triplet->current.alt = vehicle_local_position->ref_alt + _param_pld_srch_alt.get();
 	pos_sp_triplet->current.type = position_setpoint_s::SETPOINT_TYPE_POSITION;
 	_navigator->set_position_setpoint_triplet_updated();
 
@@ -475,14 +475,14 @@ bool PrecLand::check_state_conditions(PrecLandState state)
 
 	switch (state) {
 	case PrecLandState::Start:
-		return _search_cnt <= _param_max_searches.get();
+		return _search_cnt <= _param_pld_max_srch.get();
 
 	case PrecLandState::HorizontalApproach:
 
 		// if we're already in this state, only want to make it invalid if we reached the target but can't see it anymore
 		if (_state == PrecLandState::HorizontalApproach) {
-			if (fabsf(_target_pose.x_abs - vehicle_local_position->x) < _param_hacc_rad.get()
-			    && fabsf(_target_pose.y_abs - vehicle_local_position->y) < _param_hacc_rad.get()) {
+			if (fabsf(_target_pose.x_abs - vehicle_local_position->x) < _param_pld_hacc_rad.get()
+			    && fabsf(_target_pose.y_abs - vehicle_local_position->y) < _param_pld_hacc_rad.get()) {
 				// we've reached the position where we last saw the target. If we don't see it now, we need to do something
 				return _target_pose_valid && _target_pose.abs_pos_valid;
 
@@ -511,13 +511,13 @@ bool PrecLand::check_state_conditions(PrecLandState state)
 		} else {
 			// if not already in this state, need to be above target to enter it
 			return _target_pose_updated && _target_pose.abs_pos_valid
-			       && fabsf(_target_pose.x_abs - vehicle_local_position->x) < _param_hacc_rad.get()
-			       && fabsf(_target_pose.y_abs - vehicle_local_position->y) < _param_hacc_rad.get();
+			       && fabsf(_target_pose.x_abs - vehicle_local_position->x) < _param_pld_hacc_rad.get()
+			       && fabsf(_target_pose.y_abs - vehicle_local_position->y) < _param_pld_hacc_rad.get();
 		}
 
 	case PrecLandState::FinalApproach:
 		return _target_pose_valid && _target_pose.abs_pos_valid
-		       && (_target_pose.z_abs - vehicle_local_position->z) < _param_final_approach_alt.get();
+		       && (_target_pose.z_abs - vehicle_local_position->z) < _param_pld_fappr_alt.get();
 
 	case PrecLandState::Search:
 		return true;
diff --git a/src/modules/navigator/precland.h b/src/modules/navigator/precland.h
index 1bc205aa8f2c499afcbcda36381480888bebf4a8..452244d408242fe0b0ecd8685b9ecf02d036a417 100644
--- a/src/modules/navigator/precland.h
+++ b/src/modules/navigator/precland.h
@@ -125,12 +125,12 @@ private:
 	PrecLandMode _mode{PrecLandMode::Opportunistic};
 
 	DEFINE_PARAMETERS(
-		(ParamFloat<px4::params::PLD_BTOUT>) _param_timeout,
-		(ParamFloat<px4::params::PLD_HACC_RAD>) _param_hacc_rad,
-		(ParamFloat<px4::params::PLD_FAPPR_ALT>) _param_final_approach_alt,
-		(ParamFloat<px4::params::PLD_SRCH_ALT>) _param_search_alt,
-		(ParamFloat<px4::params::PLD_SRCH_TOUT>) _param_search_timeout,
-		(ParamInt<px4::params::PLD_MAX_SRCH>) _param_max_searches
+		(ParamFloat<px4::params::PLD_BTOUT>) _param_pld_btout,
+		(ParamFloat<px4::params::PLD_HACC_RAD>) _param_pld_hacc_rad,
+		(ParamFloat<px4::params::PLD_FAPPR_ALT>) _param_pld_fappr_alt,
+		(ParamFloat<px4::params::PLD_SRCH_ALT>) _param_pld_srch_alt,
+		(ParamFloat<px4::params::PLD_SRCH_TOUT>) _param_pld_srch_tout,
+		(ParamInt<px4::params::PLD_MAX_SRCH>) _param_pld_max_srch
 	)
 
 	// non-navigator parameters
diff --git a/src/modules/navigator/rcloss.cpp b/src/modules/navigator/rcloss.cpp
index 68a3633bdb890d2ad561ee8190b466b5b3e55315..d12168c7209628a3055775cf76824f368c0d0d9b 100644
--- a/src/modules/navigator/rcloss.cpp
+++ b/src/modules/navigator/rcloss.cpp
@@ -104,7 +104,7 @@ RCLoss::set_rcl_item()
 			_mission_item.loiter_radius = _navigator->get_loiter_radius();
 			_mission_item.nav_cmd = NAV_CMD_LOITER_TIME_LIMIT;
 			_mission_item.acceptance_radius = _navigator->get_acceptance_radius();
-			_mission_item.time_inside = _param_loitertime.get() < 0.0f ? 0.0f : _param_loitertime.get();
+			_mission_item.time_inside = _param_nav_gpsf_lt.get() < 0.0f ? 0.0f : _param_nav_gpsf_lt.get();
 			_mission_item.autocontinue = true;
 			_mission_item.origin = ORIGIN_ONBOARD;
 
@@ -142,7 +142,7 @@ RCLoss::advance_rcl()
 {
 	switch (_rcl_state) {
 	case RCL_STATE_NONE:
-		if (_param_loitertime.get() > 0.0f) {
+		if (_param_nav_gpsf_lt.get() > 0.0f) {
 			warnx("RC loss, OBC mode, loiter");
 			mavlink_log_critical(_navigator->get_mavlink_log_pub(), "RC loss, loitering");
 			_rcl_state = RCL_STATE_LOITER;
diff --git a/src/modules/navigator/rcloss.h b/src/modules/navigator/rcloss.h
index c626f1e3124f625145e1cdd0341a335dd302b9f1..561d457f3a7250ca425c9d2e278051e605344df8 100644
--- a/src/modules/navigator/rcloss.h
+++ b/src/modules/navigator/rcloss.h
@@ -58,7 +58,7 @@ public:
 
 private:
 	DEFINE_PARAMETERS(
-		(ParamFloat<px4::params::NAV_RCL_LT>) _param_loitertime
+		(ParamFloat<px4::params::NAV_RCL_LT>) _param_nav_gpsf_lt
 	)
 
 	enum RCLState {
diff --git a/src/modules/navigator/rtl.cpp b/src/modules/navigator/rtl.cpp
index 16a08092951cc53f9a028fd20a8bfe2227a13d7d..5ad35a21a30f95a236134dc27ddf4a7bcc046457 100644
--- a/src/modules/navigator/rtl.cpp
+++ b/src/modules/navigator/rtl.cpp
@@ -74,7 +74,7 @@ RTL::on_activation()
 	} else if ((rtl_type() == RTL_LAND) && _navigator->on_mission_landing()) {
 		// RTL straight to RETURN state, but mission will takeover for landing.
 
-	} else if ((_navigator->get_global_position()->alt < _navigator->get_home_position()->alt + _param_return_alt.get())
+	} else if ((_navigator->get_global_position()->alt < _navigator->get_home_position()->alt + _param_rtl_return_alt.get())
 		   || _rtl_alt_min) {
 
 		// If lower than return altitude, climb up first.
@@ -134,15 +134,15 @@ RTL::set_rtl_item()
 	const float home_dist = get_distance_to_next_waypoint(home.lat, home.lon, gpos.lat, gpos.lon);
 
 	// Compute the return altitude.
-	float return_alt = math::max(home.alt + _param_return_alt.get(), gpos.alt);
+	float return_alt = math::max(home.alt + _param_rtl_return_alt.get(), gpos.alt);
 
 	// We are close to home, limit climb to min.
 	if (home_dist < _param_rtl_min_dist.get()) {
-		return_alt = home.alt + _param_descend_alt.get();
+		return_alt = home.alt + _param_rtl_descend_alt.get();
 	}
 
 	// Compute the loiter altitude.
-	const float loiter_altitude = math::min(home.alt + _param_descend_alt.get(), gpos.alt);
+	const float loiter_altitude = math::min(home.alt + _param_rtl_descend_alt.get(), gpos.alt);
 
 	switch (_rtl_state) {
 	case RTL_STATE_CLIMB: {
@@ -229,7 +229,7 @@ RTL::set_rtl_item()
 		}
 
 	case RTL_STATE_LOITER: {
-			const bool autoland = (_param_land_delay.get() > FLT_EPSILON);
+			const bool autoland = (_param_rtl_land_delay.get() > FLT_EPSILON);
 
 			// Don't change altitude.
 			_mission_item.lat = home.lat;
@@ -239,7 +239,7 @@ RTL::set_rtl_item()
 			_mission_item.yaw = home.yaw;
 			_mission_item.loiter_radius = _navigator->get_loiter_radius();
 			_mission_item.acceptance_radius = _navigator->get_acceptance_radius();
-			_mission_item.time_inside = math::max(_param_land_delay.get(), 0.0f);
+			_mission_item.time_inside = math::max(_param_rtl_land_delay.get(), 0.0f);
 			_mission_item.autocontinue = autoland;
 			_mission_item.origin = ORIGIN_ONBOARD;
 
@@ -324,7 +324,7 @@ RTL::advance_rtl()
 	case RTL_STATE_DESCEND:
 
 		// Only go to land if autoland is enabled.
-		if (_param_land_delay.get() < -DELAY_SIGMA || _param_land_delay.get() > DELAY_SIGMA) {
+		if (_param_rtl_land_delay.get() < -DELAY_SIGMA || _param_rtl_land_delay.get() > DELAY_SIGMA) {
 			_rtl_state = RTL_STATE_LOITER;
 
 		} else {
diff --git a/src/modules/navigator/rtl.h b/src/modules/navigator/rtl.h
index f477713b86c30bb8b70c0069b41682a70655bc05..d852232d5105ace160837a532f93872a7aaa6d62 100644
--- a/src/modules/navigator/rtl.h
+++ b/src/modules/navigator/rtl.h
@@ -94,9 +94,9 @@ private:
 	bool _rtl_alt_min{false};
 
 	DEFINE_PARAMETERS(
-		(ParamFloat<px4::params::RTL_RETURN_ALT>) _param_return_alt,
-		(ParamFloat<px4::params::RTL_DESCEND_ALT>) _param_descend_alt,
-		(ParamFloat<px4::params::RTL_LAND_DELAY>) _param_land_delay,
+		(ParamFloat<px4::params::RTL_RETURN_ALT>) _param_rtl_return_alt,
+		(ParamFloat<px4::params::RTL_DESCEND_ALT>) _param_rtl_descend_alt,
+		(ParamFloat<px4::params::RTL_LAND_DELAY>) _param_rtl_land_delay,
 		(ParamFloat<px4::params::RTL_MIN_DIST>) _param_rtl_min_dist,
 		(ParamInt<px4::params::RTL_TYPE>) _param_rtl_type
 	)