Hello,

I was flying the matrice 300 RTK using an EMLID RS+ as a base station a few days ago. As I couldn't figure out a way to make them talk to each other, I assumed that by switching off the RTK mode on the drone, I would get PPK logs instead and would process everything back at the office.
I was either wrong (no PPK logs when RTK off?), or I am not sure where to find those actual logs.
Which one is it ?

Thank you so much for your help!

Hi JSC-AL

as of fimrware v03.00 .01.0 1  (just released) , the M300 will produce both the raw GNSS data (for PPK) in the form of a .obs file (in Rinex format) as well as the .mrk file with the photo markers.

I think you'll get these files even when flying in RTK mode.

So you just need to upgrade..

Hey JSC-AL, I ran into the same issue with my Emlid RS2 couldn't get it to talk to the M300. Tried a couple of different thing even the Emlid caster. What are you using for PPK processing? RTKpost? If so would you mind sharing your workflow. Right now I'm having an issue just trying to get it to connect to the correction network. I was running the latest firmware but support told me to downgrade to the previous level and try again...still no luck.

I was actually able to get it connected to my RS2 base via Emlid Caster which I can use as a fall back if I can't connect to the correction network. DJI is looking at the logs now, hopefully they have an answer.

Euis Posted at 10-31 16:02
Hi JSC-AL

as of fimrware v03.00 .01.0 1  (just released) , the M300 will produce both the raw GNSS data (for PPK) in the form of a .obs file (in Rinex format) as well as the .mrk file with the photo markers.

  Reason why a have no "eventlog.bin" and "rinex" files in data folder After flight?

hi, i have de same problem for ppk...can't get "enventlog.bin" and "rinex.obs" gnss files when rtk disable. Did you find solution since? thanks.

Euis Posted at 2021-10-31 16:02
Hi JSC-AL

as of fimrware v03.00 .01.0 1  (just released) , the M300 will produce both the raw GNSS data (for PPK) in the form of a .obs file (in Rinex format) as well as the .mrk file with the photo markers.

Hey JSC-AL,

I plan to acquire the Matrice 300 RTK. However, i could not find anywhere (even in any of the v03.00.01.01 firmware documentation), anything about the .obs file. Since i do not have a drone I cannot validate experimentally neither. I also need the drone to be dual band. i.e. L1 & L2 (nothing to do with the L1 sensor! ). Do you have any info on these specs? It would be GREATLY appreciated! Usually the specs would say: "GPS, GLONASS, L1, L2" I can see of course that the GPS/GLONASS are part of the usual specs description. However the Matrice 300 could be single band only (= L1). A single band receiver is less accurate than a dual band (L1+L2). This is of the utmost importance when doing PPK. Thanks again for your reply....

Yvan Daniel

Hello, I need help in finding the lever arms or camera offsets for the DJI M300 to use the drone in PPK mode.
I understand that using RTK, flightsync 2.0 calculates the precise positions of the camera centre, but that's different when using PPK.

Regards,

Geomensoring Posted at 3-31 11:36
Hello, I need help in finding the lever arms or camera offsets for the DJI M300 to use the drone in PPK mode.
I understand that using RTK, flightsync 2.0 calculates the precise positions of the camera centre, but that's different when using PPK.

Geomensoring, did you ever find the answer for the antenna offset when doing PPK?

FlyinLo Posted at 10-6 15:16
Geomensoring, did you ever find the answer for the antenna offset when doing PPK?

There is no level arm but eccenticities in 3 dimmensions stored in mrk files.