Recent content by jaja6009

Mflyer, on this test I may not get a chance with multiple speeds on the 4T, but you can be certain that I will be testing the 4T in mapping and modeling constantly, so I will have this information in the near future. I chose 15 mph since it should help the 4T with Rolling Shutter distortion. I...

I plan on the following for my test. The drone should be here on Wednesday and hopefully within a week I can find time to do a test. Drones in test. Matrice 4E Matrice 4T Mavic 2 Enterprise Advanced Mavic 3E Phantom 4 RTK All drones will receive corrections from my RTK subscription service...

No, I have not tried any automated mission at night. I am interested in others' answers though. DJI states that the vision positioning and obstacle avoidance need at least urban type lighting (street lights). Would turning off obstacle avoidance help in this situation? I know for safety it...

I just purchased a Matrice 4T. Is was a very hard decision between the dock version and the normal 4T. It has not shipped yet, but hopefully soon. I will have a mapping competition between the Matrice 4E, Matrice 4T and the Phantom 4 RTK and post the results. All drones will be receiving...

You can run this with Smart Oblique, nadir with altitude optimization (1 flight line of oblique from outside to center) or even with double grid oblique. If you run double grid oblique you do not need the overlap listed since oblique images contain so much more of the scene in each image. I run...

http://rtk2go.com/how-to-connect/ On your controller go to the RTK menu, choose the 3 dots top right, then choose the RTK menu. (It either says RTK or has a satellite symbol. Choose the Custom NTRIP choice. Turn on RTK. Follow the directions above. Before you log in, find a mount point close...

I have changed my opinion on the M4T. I called one of my vendors and he stated that Time Sync is indeed running and the drone should produce low cm accurate data, and that error would come from rolling shutter effect. Your testing is pointing in this direction. I wish I was near you, I would...

I want you guys to prove this. Here is my persepctive on his results. The limited data he gave showed that there was indeed a very nice alignment. If the source data is absolute accurate data and his data lined up well, it is looking good. The chance that the source data is not accurate and...

On the Pix4D quality report you are showing, that is the Geolocation section. Read the bottom of the page. "Note that the image geolocation errors do not correspond to the accuracy of the observed 3D points." You need to have check points to assess absolute accuracy. Your overlays show...

To see your real error for absolute accuracy, you need to add control points used as check points. The above quality report is not able to properly assess absolute accuracy since the only data it has for absolute positioning is from the drone images which were used for processing. Alls it is...

A couple of questions. When you say 10cm, what is reporting 10 cm? Next, are you receiving corrections from an NTRIP service such as a CORS or paid service? When using Emlid Studio are you uploading the obs, MRK and NAV files from your drone? And if so, what are you using for your base...

Various places online have this debate. The problem is that not one person has ever produced an orthomap that includes check points to prove their accuracy. There are just claims of cm accuracy with the Matrice 4T, but they don't say whether this is relative accuracy (To scale, does 1 foot in my...

MSX is a FLIR specific function, not available on the Matrice 4 series. I am not following you on Multi-Spectral. You can turn on Super Res where the 640 thermal image is software enhanced to better contrast on screen temperatures though.

You probably could. In a Baamtech PPK kit for the Phantom 4 Pro v2, you actually used the drone to measure control points. You would place the drone on the target, have an X grid on the screen, line up the centerpoint with the center of the control point and take an image to trigger the PPK time...

No. Unfortunately the T version does not use Time Sync even when receiving corrections. The mechanical shutter is not the main reason for the lack of accuracy/precision, it's the fact that DJI wants to make you buy both drones if you want to do thermal work and mapping by not having Time Sync on...