GOOD DAY ALL
Please, can you help..
received this trajectory file data with our lidar dataset, but when we filter the time stamp (as being column1-208706.00806 etc as per the information received it gives us this error)
what am I going wrong or is the error in the trajectory information received
Hi All
I am having the same issues. I have received a las file and the corresponding trajectory files but get a mismatch error.
Been looking on the net to see how i can convert the SOW time to GPS time but not seen anything that works or really makes sense.
These are the time stamps i have on my .txt file and the Las file is saying it should be 1.35446e+09
Any idea what conversion method you should use or work flow. We have spoken to Bentley and DJI both say its the others problem.
Pete
Hi @ Peter Jackson. You can use LAStools: https://rapidlasso.com/lastools/
If you are struggling I can help in Terrasolid.
Regards,Jason.
Hi Eko Setiawan , I would suggest using TerraScan if possible. In their software package it is possible to change the timestamp format of both the trajectory and point cloud as well as re-project your data to various coordinate systems. This is likely to be the best solution as there are many potential sources of error when completing these multiple conversions in excel.
Hi Jason Hagon , thank you for your guidance, can you point me to a guide for the process needed to be done in TerraScan for correcting the timestamp?
Please see information here: https://terrasolid.com/guides/tscan/convert-time-stamps.html?q=time
This can be completed for trajectories and point clouds.
to have GPS time from SOW you have to add GPS time of the previous sunday midnight (you can use this link https://www.andrews.edu/~tzs/timeconv/timeconvert.php? to find gps time of sunday midnight.
Then you have to convert lat/long from radians to degrees and then from lat/long to xy.
so you can edit your excel file and save as txt
Hi @Jason Hagon, so I trial terrascan and with your guide, I manage to convert timestamp, how do I convert lat long from radian to degree?
Hi Eko Setiawan , I would contact Terrasolid support and explain to them what you are trying to do. Alternatively you can email me at jason@geodronesurvey.com for details of our commercial services.
My recommended workflow would be to import your SBET and export as lat long. More details about the trajectory support in Terrascan can be found here: https://terrasolid.com/guides/tscan/managetrajectories.html