1-Can someone please explain what exactly is the timestamp that is sent along with every message regardless of the data type ? This number is huge and its in the range of 4.7x10^18 .
2- For synchronization between GPS and for example IMU, can we simple look for the closest Timestamp and regard them as one ?
Thanks,
Naz
Originally posted by Naz on ROS Answers with karma: 1 on 2014-08-12
Post score: 0
In ROS messages timestamp is taken from your system, which is unix epoch time.
Check Unix epoch time here.
For synchronisation look message_filters
Documentaiton of the datatypes are at: http://wiki.ros.org/rospy/Overview/Time and http://wiki.ros.org/rospy/Overview/Time
Originally posted by bvbdort with karma: 3034 on 2014-08-12
This answer was ACCEPTED on the original site
Post score: 6
Comment by ahubers on 2014-08-12:
Also, if the workstation and the device are significantly off, you can sync the two with chrony. Just mentioning because it took me too long to figure out...