DJI Zenmuse L2 PPK Workflow

This video covers processing a LiDAR point cloud in DJI Terra, some of the tools available for measurements and annotations, and exporting your point cloud file. All of the software and tools demonstrated are available for L2 data without a subscription for Terra.
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[@chriseshun2866]

Great Video. One Question, Does this method also work for Tremble R12 Base? and what format should the file be before changing it to OBS

[@e38surveysolutions59]

Yes, this should work with the R12 Base. In your rinex log files the .xxO (xx corresponds to the year the file was recorded) file is your observation file you will need to change to OBS.

[@JAVIERGIMENEZBENITEZ]

Could you create a PPK workflow for images obtained with the Zenmuse L2? Specifically, I need guidance on how to modify the PPK geotagging of L2 images. In the field, RTK flights are often not possible due to poor telemetry signal due to forests. Therefore, flying the drone in PPK mode is very necessary for me.

[@ehcropydoc]

Would you be able to do a full workflow starting from collecting GCP’s?

[@e38surveysolutions59]

Yes, we can cover that in a future video.

[@e38surveysolutions59]

kzbin.info/www/bejne/oYWop4KZeZt0jas

[@marcusgilmore4311]

Do I need to do ppk if I’m working on a localized coordinate system

[@e38surveysolutions59]

Not necessarily, we generally follow the PPK workflow to improve accuracy for relatively minimal added time and effort.

[@marcusgilmore4311]

@@e38surveysolutions59 okay, thanks. I’m having trouble in Terra processing a local grid localized in emlid. It doesn’t seem like the emlid is shifting my northing and easting only my lat and long. I also haven’t been able to get it to work with the projection file.

[@e38surveysolutions59]

@marcusgilmore4311 we'd be happy to help troubleshoot with you if you'd like to reach out to [e-mail] or [e-mail] we can get into the details of what might be going on there

[@marcusgilmore4311]

@@e38surveysolutions59 awesome, thanks I'll reach out🙏

[@imbabywild]

Question: How do we get the .rtb file in the data if we're shooting PPK and not RTK? I'm missing the file and cannot do the processing. In fact, in almost every scan I've done, I'm missing crucial files. How can I ensure that I have everything I need in the office before leaving the field? Thank you

[@e38surveysolutions59]

The .rtb file is generated when flying in RTK, it contains the base station(or CORS) RTCM data. EDIT: After looking into it further, it seems you need to fly in RTK to generate all necessary files. So you either need to connect to a base or NTRIP network during the L2 mission flight.

[@keyable]

I am very new to PPK thing, I was always using RTK with NTRIP to get point data on site. Is there any video which explains in details how to use PPK from start to finish? THNX!

[@e38surveysolutions59]

We have one in the works as requested by @ehcropydoc, check back with us soon for that.

[@keyable]

@@e38surveysolutions59 Thanks! will be waiting for your next video

[@e38surveysolutions59]

kzbin.info/www/bejne/oYWop4KZeZt0jas

[@keyable]

@@e38surveysolutions59 Thanks! was waiting for this video \o/

[@JAVIERGIMENEZBENITEZ]

Could you create a PPK workflow for images obtained with the Zenmuse L2? Specifically, I need guidance on how to modify the PPK geotagging of L2 images. In the field, RTK flights are often not possible due to poor telemetry signal due to forests. Therefore, flying the drone in PPK mode is very necessary for me.

[@e38surveysolutions59]

Hi this: kzbin.info/www/bejne/rISZk5qvmaitas0 should allow you to ppk your image geotags. You will need to change the .rtk file from your L2 mission folder to .obs to process it in Emlid Studio.