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Recent content by jaja6009

  1. J

    Matrice 4 Accesories

    On Reditt many posters were saying that different DJI Enterprise vendors were stating that they were told to not sell any Enterprise level drones. I went to DJI.c0m and almost every Enterprise drone I clicked on Buy Now, had the same not available in your country and this included the DRTK-3...
  2. J

    Matrice 4 E 3D tiled model output from Agisoft Metashape Pro

    I finally was able to process a 3D model with a close to target mission. DJI Terra was able to do this with almost any dataset and has the better looking model, but I have been having problems uploading the data to my sharing platform without it being down sampled. For now here is the output...
  3. J

    RTK mapping with Matrice 4T

    If you still have the Phantom 4 RTK, use that for your visual map. Then process your thermal map. Pick your own control points on the visual map that you can find in the thermal map. Now you can have the thermal map overlay the visual map very well. The Phantom 4 RTK's visual camera is better...
  4. J

    RTK mapping with Matrice 4T

    Yes. A control point is a marker that the drone's images must show. You measure the center of the control point with a GNSS unit which could be a Trimble, Emlid or DRTK unit. You now have low centimeter accurate data on the location of the center of the control point. In photogrammetry...
  5. J

    First lidar project - any experts out there?

    I would ask over at the Reddit UAV mapping forum. They have a ton of people using the L1 and L2 LiDAR payloads.
  6. J

    New Firmware available for Matrice 4 Series

    New Firmware dropped today! DJI Matrice 4 Series Release Notes https://enterprise.dji.com/matrice-4-series Copyright © 2025 DJI All Rights Reserved. 1 Date: 2025.04.15 Aircraft Firmware: v13.01.00.10 Remote Controller Firmware: v01.61.04.05 AS1 Firmware: v01.00.01.11 AL1 Firmware: v01.00.29.85...
  7. J

    Base station - rtk/ppk

    Make sure they are spread out. Since you used RTK, you can set all of them as check points. Run some tests, try half as Checks and half as GCPs. Then run all as checks. If you used Altitude Optimization where the last flight line is a diagonal line of oblique images from an outside corner to...
  8. J

    Base station - rtk/ppk

    Make sure you set some of them to Check Points, and you look at the RMSE for the check points to assess your accuracy. GCP's are used by the software to correct the accuracy of your outputs. Check Points are not used will aerotriangulating. They are only used after the initial sparse point...
  9. J

    Base station - rtk/ppk

    I don't think you're doing anything wrong. Google Earth's points are accurate measured in feet in meters. Your outputs if done correctly will be in the centimeter range. On your Terra Quality report what do you have for your RMSE on the Check Points? As long as your Checkpoints are laid out...
  10. J

    RTK mapping with Matrice 4T

    The Matrice 4 T does NOT produce survey grade accuracy like the Matrice 4 E. The same thing is true with the Mavic 3E and Mavic 3T. Also, the RGB camera on the Matrice 4T is not the same higher quality Micro 4/3 found on the Matrice 4 E with its mechanical shutter. You will need to add Ground...
  11. J

    LKTOP 200W Matrice 4 Series Battery charger

    Amazon has a new battery charger for the Matrice 4 series. https://www.amazon.com/LKTOP-Charging-Stickers-Parallel-Batteries/dp/B0DX6T91TG/ref=cm_cr_arp_d_product_top?ie=UTF8&th=1 The OEM charger is pretty decent and is pretty fast charging a single battery. It also allows for 90% or 100%...
  12. J

    First RTH Landing

    Today I was testing some things. Again, it was very windy with a consistent 20 mph wind and gusts at 25. I tried out the RTH landing myself since I had a hard time landing on my smallish pad. With RTK corrections on, she landed smack dab in the middle of the pad all while fighting the wind with...
  13. J

    The Matrice 4 E flat out moves!

    A new speed record for the Matrice. Still using the Low Noise Propellers, I broke the 70 mph mark with 71.81 mph. This was with a 20-25 mph tailwind. I will try some more with the regular propellers soon. Watching this aircraft overhead zip by at 70+ mph is a sight to see. For public safety...
  14. J

    Base station - rtk/ppk

    Are you saying that when comparing a point on your Terra created map, it disagrees with Google Earth by a meter? If so: 1. Google Earth's coordinates are not survey grade. 2. Google Earth's coordinates are in WGS 84, and most projects in the US want to use NAD83 (2011) and a projection with...
  15. J

    Base station - rtk/ppk

    You have everything you need. You just have to put together a workflow. First. You have correctly connected the DRTK to the NTRIP service? ( I use Emlids so I cannot help you there.) But, do you know what datum your NTRIP service gives its corrections in? In the US, most will send corrections...