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Syncronization of Timestamps

asked 2014-08-07 09:46:04 -0600

Naz gravatar image

Hello everyone,

Currently I am logging the IMU data , GPS data and other data but since these nodes log data at different frequencies , my post processing is pointless ( Timestamps are different ). I need to find out a way by which I can synchronize all the data so I can do my post processing.

Thank you in advance, Naz

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Are you using this data for robot_pose_ekf?

l0g1x gravatar imagel0g1x ( 2014-08-07 11:14:38 -0600 )edit

I am using this data for my research on Cooperative Navigation.

Naz gravatar imageNaz ( 2014-08-07 14:17:43 -0600 )edit

robot_pose_ekf is a filtering node for more accurate position. Didnt mean for what project are you using it for. Sorry.

l0g1x gravatar imagel0g1x ( 2014-08-07 14:22:27 -0600 )edit

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answered 2014-08-07 11:14:08 -0600

sai gravatar image

You can use the ExactTime and ApproximateTime Synchronization methods in ROS.

http://wiki.ros.org/message_filters/A...

http://wiki.ros.org/message_filters

In the answer at the link below, there is a sample code that subscribes to two point clouds and uses ApproximateTime policy for synchronization.

http://answers.ros.org/question/18628...

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Asked: 2014-08-07 09:46:04 -0600

Seen: 199 times

Last updated: Aug 07 '14