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Published 20 hours ago • verified publisher icon ros-drivers

timestamp seems incorrect using pps and gprmc

Open wangce31 opened this issue 3 years ago • 1 comments

-Device: VLP16

  • OS and Version: Ubuntu 18.04
  • ROS Version: melodic
  • Built from Source or Downloaded from Official Repository: source code

Describe the bug: I try to synchronize timestamp using pps and GPRMC.The interface box is connected correctly according to the documentation. And GPS position and pps lock are shown correctly on the configuration page. As far as I know, when receiving a rising edge of pps, lidar will phase lock and clear the sub-seconds counter. In this case, the microseconds of the first frame of pointcloud after receiving the rising edge within every second should be about 100ms ( 10Hz), but the result does not seem to be correct.It looks like phase lock doesn't work. 111 222

wangce31 avatar Jun 04 '21 07:06 wangce31

which type of GPS used to synchronize ? could you please provide us with a photo for the pin wires connections?

Mahmoudadham4040 avatar Aug 02 '23 05:08 Mahmoudadham4040