Metadata update and fixes to internallinkerrors

docs/en/msg_docs/VehicleLocalPositionV0.md

@@ -0,0 +1,96 @@
+# VehicleLocalPositionV0 (UORB message)
+
+Fused local position in NED.
+The coordinate system origin is the vehicle position at the time when the EKF2-module was started.
+
+[source file](https://github.com/PX4/PX4-Autopilot/blob/main/msg/px4_msgs_old/msg/VehicleLocalPositionV0.msg)
+
+```c
+# Fused local position in NED.
+# The coordinate system origin is the vehicle position at the time when the EKF2-module was started.
+
+uint32 MESSAGE_VERSION = 0
+
+uint64 timestamp			# time since system start (microseconds)
+uint64 timestamp_sample                 # the timestamp of the raw data (microseconds)
+
+bool xy_valid				# true if x and y are valid
+bool z_valid				# true if z is valid
+bool v_xy_valid				# true if vx and vy are valid
+bool v_z_valid				# true if vz is valid
+
+# Position in local NED frame
+float32 x				# North position in NED earth-fixed frame, (metres)
+float32 y				# East position in NED earth-fixed frame, (metres)
+float32 z				# Down position (negative altitude) in NED earth-fixed frame, (metres)
+
+# Position reset delta
+float32[2] delta_xy			# Amount of lateral shift of position estimate in latest reset (in x and y) [m]
+uint8 xy_reset_counter			# Index of latest lateral position estimate reset
+float32 delta_z				# Amount of vertical shift of position estimate in latest reset [m]
+uint8 z_reset_counter			# Index of latest vertical position estimate reset
+
+# Velocity in NED frame
+float32 vx 				# North velocity in NED earth-fixed frame, (metres/sec)
+float32 vy				# East velocity in NED earth-fixed frame, (metres/sec)
+float32 vz				# Down velocity in NED earth-fixed frame, (metres/sec)
+float32 z_deriv				# Down position time derivative in NED earth-fixed frame, (metres/sec)
+
+# Velocity reset delta
+float32[2] delta_vxy			# Amount of lateral shift of velocity estimate in latest reset (in x and y) [m/s]
+uint8 vxy_reset_counter			# Index of latest vertical velocity estimate reset
+float32 delta_vz			# Amount of vertical shift of velocity estimate in latest reset [m/s]
+uint8 vz_reset_counter			# Index of latest vertical velocity estimate reset
+
+# Acceleration in NED frame
+float32 ax        # North velocity derivative in NED earth-fixed frame, (metres/sec^2)
+float32 ay        # East velocity derivative in NED earth-fixed frame, (metres/sec^2)
+float32 az        # Down velocity derivative in NED earth-fixed frame, (metres/sec^2)
+
+float32 heading				# Euler yaw angle transforming the tangent plane relative to NED earth-fixed frame, -PI..+PI,  (radians)
+float32 heading_var
+float32 unaided_heading                 # Same as heading but generated by integrating corrected gyro data only
+float32 delta_heading			# Heading delta caused by latest heading reset [rad]
+uint8 heading_reset_counter		# Index of latest heading reset
+bool heading_good_for_control
+
+float32 tilt_var
+
+# Position of reference point (local NED frame origin) in global (GPS / WGS84) frame
+bool xy_global				# true if position (x, y) has a valid global reference (ref_lat, ref_lon)
+bool z_global				# true if z has a valid global reference (ref_alt)
+uint64 ref_timestamp			# Time when reference position was set since system start, (microseconds)
+float64 ref_lat				# Reference point latitude, (degrees)
+float64 ref_lon				# Reference point longitude, (degrees)
+float32 ref_alt				# Reference altitude AMSL, (metres)
+
+# Distance to surface
+bool dist_bottom_valid			# true if distance to bottom surface is valid
+float32 dist_bottom			# Distance from from bottom surface to ground, (metres)
+float32 dist_bottom_var                 # terrain estimate variance (m^2)
+
+float32 delta_dist_bottom               # Amount of vertical shift of dist bottom estimate in latest reset [m]
+uint8 dist_bottom_reset_counter         # Index of latest dist bottom estimate reset
+
+uint8 dist_bottom_sensor_bitfield	# bitfield indicating what type of sensor is used to estimate dist_bottom
+uint8 DIST_BOTTOM_SENSOR_NONE = 0
+uint8 DIST_BOTTOM_SENSOR_RANGE = 1	# (1 << 0) a range sensor is used to estimate dist_bottom field
+uint8 DIST_BOTTOM_SENSOR_FLOW = 2	# (1 << 1) a flow sensor is used to estimate dist_bottom field (mostly fixed-wing use case)
+
+float32 eph				# Standard deviation of horizontal position error, (metres)
+float32 epv				# Standard deviation of vertical position error, (metres)
+float32 evh				# Standard deviation of horizontal velocity error, (metres/sec)
+float32 evv				# Standard deviation of vertical velocity error, (metres/sec)
+
+bool dead_reckoning                     # True if this position is estimated through dead-reckoning
+
+# estimator specified vehicle limits
+float32 vxy_max				# maximum horizontal speed - set to 0 when limiting not required (meters/sec)
+float32 vz_max				# maximum vertical speed - set to 0 when limiting not required (meters/sec)
+float32 hagl_min			# minimum height above ground level - set to 0 when limiting not required (meters)
+float32 hagl_max			# maximum height above ground level - set to 0 when limiting not required (meters)
+
+# TOPICS vehicle_local_position vehicle_local_position_groundtruth external_ins_local_position
+# TOPICS estimator_local_position
+
+```