ign sim fix alt ground truth and baro

src/modules/ignition_simulator/IgnitionSimulator.cpp

@@ -157,7 +157,7 @@ void IgnitionSimulator::PoseInfoCallback(const ignition::msgs::Pose_V &pose)
 				_pos_ref.reproject(local_position_groundtruth.x, local_position_groundtruth.y,
 						   global_position_groundtruth.lat, global_position_groundtruth.lon);
 
-				global_position_groundtruth.alt = _param_sim_home_alt.get() - static_cast<float>(pose_position.z());
+				global_position_groundtruth.alt = _param_sim_home_alt.get() - static_cast<float>(position(2));
 				global_position_groundtruth.timestamp = hrt_absolute_time();
 				_gpos_ground_truth_pub.publish(global_position_groundtruth);
 			}

src/modules/simulator/sensor_baro_sim/SensorBaroSim.cpp

@@ -156,7 +156,7 @@ void SensorBaroSim::Run()
 			const float absolute_pressure_noisy = absolute_pressure + abs_pressure_noise + _baro_drift_pa;
 
 			// convert to hPa
-			float pressure = absolute_pressure_noisy * 0.01f + _sim_baro_off_p.get();
+			float pressure = absolute_pressure_noisy + _sim_baro_off_p.get();
 
 			// calculate temperature in Celsius
 			float temperature = temperature_local - 273.0f + _sim_baro_off_t.get();