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How to generate /odom by only using /imu/data?

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Hello guys, I've been trying to integrate IMU data to robot_pose_ekf. However, robot_pose_ekf subscribes to an odometry topic, which in my case is not available. Our robot only has two laser scanners and no wheel odometry. hector_mapping generates the transform "odom --> base_footprint" which I use to created a fake odometry message. So, I had /odom and /imu/data as inputs for robot_pose_ekf. It didn't work out due to timing issues between the topics. Do you know of a ros-package which subscribes to /imu/data and publishes and odometry message? If not, what kind of approach would be best for dealing with that? A Kalman Filter? I'm looking for something like this: 3D Tracking with IMU https://www.youtube.com/watch?v=6ijArKE8vKU Thanks in advance

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