Update PX4 Firmware metadata Wed Feb 3 17:24:40 UTC 2021

src/FirmwarePlugin/PX4/PX4ParameterFactMetaData.xml

@@ -4055,6 +4055,13 @@ Value 0 turns the functionality off</short_desc>
       <unit>m/s^2</unit>
       <decimal>1</decimal>
     </parameter>
+    <parameter name="LNDMC_ALT_GND" default="-1.0" type="FLOAT">
+      <short_desc>Ground effect altitude for multicopters</short_desc>
+      <long_desc>The height above ground below which ground effect creates barometric altitude errors. A negative value indicates no ground effect.</long_desc>
+      <min>-1</min>
+      <unit>m</unit>
+      <decimal>2</decimal>
+    </parameter>
     <parameter name="LNDMC_ALT_MAX" default="-1.0" type="FLOAT">
       <short_desc>Maximum altitude for multicopters</short_desc>
       <long_desc>The system will obey this limit as a hard altitude limit. This setting will be consolidated with the GF_MAX_VER_DIST parameter. A negative value indicates no altitude limitation.</long_desc>