Hello to everybody,
I have to ask a suggestion. Is there any implementation of sonar sensor in ROS?
I need an height estimator for my simulated quadrotor (it has to be external to IMU equipped on the quadrotor) in ROS. So, I thought to a sonar sensor.
I know that I could subscribe to all model state topic and get the z but this might be a source of error. Think about a quadrotor at 1m of height in hovering. If there is an object under it (own height 0.2m) the absolute height is again 1m instead of 1-0.2 = 0.8m that a sonar will have as output. In the meantime, if I check this constraint it is a source of error. Think about quadrotor with 15deg of roll. The height is not 1m but something more.
So, I need this kind of error. I also thought also to a range finder sensor (like Hokuyo) that I know there is already in ROS with a range really small. Has anyone tried this solution? In this way, I might be sure that it works. If there is a sonar implementation, this would be great!
Thanks a lot for any reply. Best regards,
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