Map drifted immediately while odometry is from robot_localization
Dear all, I have been trying robot_localization on RTAB-Map generated VO and IMU(mpu6050). I moved a cart equipped with ZED+IMU around to form a loop. Though I didn't have a ground truth to verify if fusion improves the trajectory. I found that map drifted immediately in fusion mode. I wonder if it's possible for you to look into my launch file and see what might be wrong? Thank you so much. Here's the EKF part in my launch file
<!-- Odometry fusion (EKF), refer to demo launch file in robot_localization for more info -->
<node pkg="robot_localization" type="ekf_localization_node" name="ekf_localization" clear_params="true" output="screen">
<param name="frequency" value="50"/>
<param name="sensor_timeout" value="0.1"/>
<param name="two_d_mode" value="false"/>
<param name="odom_frame" value="odom"/>
<param name="base_link_frame" value="$(arg frame_id)"/>
<param name="world_frame" value="odom"/>
<param name="transform_time_offset" value="0.0"/>
<param name="odom0" value="/vo"/>
<param name="imu0" value="$(arg imu_topic)"/>
<param name="debug" value="true"/>
<param name="debug_out_file" value="/home/acid/acid/catkin_ws/src/robot_localization/acid_debug_ekf_localization.txt"/>
<!-- The order of the values is x, y, z, roll, pitch, yaw, vx, vy, vz, vroll, vpitch, vyaw, ax, ay, az. -->
<rosparam param="odom0_config">[true, true, true,
false, false, false,
true, true, true,
false, false, false,
false, false, false]</rosparam>
<rosparam if="$(arg imu_ignore_acc)" param="imu0_config">[
false, false, false,
true, true, true,
false, false, false,
true, true, true,
false, false, false] </rosparam>
<rosparam unless="$(arg imu_ignore_acc)" param="imu0_config">[
false, false, false,
true, true, true,
false, false, false,
true, true, true,
true, true, true] </rosparam>
<param name="odom0_differential" value="false"/>
<param name="imu0_differential" value="true"/>
<param name="odom0_relative" value="true"/>
<param name="imu0_relative" value="false"/>
<param name="imu0_remove_gravitational_acceleration" value="$(arg imu_remove_gravitational_acceleration)"/>
<param name="print_diagnostics" value="true"/>
<!-- ======== ADVANCED PARAMETERS ======== -->
<param name="odom0_queue_size" value="50"/>
<param name="imu0_queue_size" value="50"/>
<!-- The values are ordered as x, y, z, roll, pitch, yaw, vx, vy, vz,
vroll, vpitch, vyaw, ax, ay, az. -->
<rosparam param="process_noise_covariance">[0.005, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0.005, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0.006, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0.003, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0.003, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0.006, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0.0025, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0.0025, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0.004, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0.001, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0.001, 0, 0, 0, 0 ...