Best Practices to Connect an Emlid Reach RS2 Base to an Autel Evo II Pro Enterprise RTK Drone

[jmason702]

can you post a single R-JPEG from the 640R? I would like to compare the metadata to the converted 640T

 

[Malli35998]

can you post a single R-JPEG from the 640R? I would like to compare the metadata to the converted 640T

 

[Malli35998]

I copied several more thermal IR images to Dropbox. See link below.

Thermal IR Photos

Shared with Dropbox

www.dropbox.com

 

[jmason702]

Very simular to the converted 640T

 

[jmason702]

 

[jmason702]

better example

 

[Malli35998]

Response from OpenDroneMap (WebODM) Forum: "With the latest docker version (I don’t think this has been published to the Windows native version yet) you should be able to access the LWIR formulas for temperature from the “Plant Health” tab. Your orthophoto needs to have a LWIR band (typical in multispectral datasets) for the formula to show up."

 

[Malli35998]

With regards to SimActive C3D. See

Customizing Your Multispectral Processing Workflow​

​

See attached screen captures below. First attachment shows an example in the video from above. Note the LWIR band option. Even though the FLIR Boson 640 is a LWIR thermal camera. I am not sure this band is being output/saved in the Autel Thermal IR image format.

 

[anejojoe]

I recently purchased the EVO 2 RTK series v3 as a backup to my M300 and I process the data using Pix4dMapper. I use the Emlid RS2+ for my base setup on a known point and the RS2 for my rover, feed correction from the base through Emlid caster service to my rover and drone. This setup has worked pretty well for my M300. I've flown a couple of test site with the EVO and my elevations are all over the place after processing in Pix4d. I found out from Pix you have to manually set the vertical CS in the image editor for Pix when you import the images to Ellipsoid with a 0 offset, it's set to MSL EGM 96 by default. For the output CS I use either Texas central or Texas South central and ellipsoid for VCS and set my geoid offset there..typically between -83 and -85 ft. Changing the vertical CS in the images editor fixed the issue with my elevation being off by 90 to 100 ft but I'm still seeing issue with horizontal and vertical accuracy...anywhere from 6 ft at one site to .889 ft at another, horizontal is anywhere from .2ft to .6 compared to my GCP. I have a ticket open with Pix and Autel now just thought I'd try here see if anyone has had similar issues.

 

[jmason702]

I recently purchased the EVO 2 RTK series v3 as a backup to my M300 and I process the data using Pix4dMapper. I use the Emlid RS2+ for my base setup on a known point and the RS2 for my rover, feed correction from the base through Emlid caster service to my rover and drone. This setup has worked pretty well for my M300. I've flown a couple of test site with the EVO and my elevations are all over the place after processing in Pix4d. I found out from Pix you have to manually set the vertical CS in the image editor for Pix when you import the images to Ellipsoid with a 0 offset, it's set to MSL EGM 96 by default. For the output CS I use either Texas central or Texas South central and ellipsoid for VCS and set my geoid offset there..typically between -83 and -85 ft. Changing the vertical CS in the images editor fixed the issue with my elevation being off by 90 to 100 ft but I'm still seeing issue with horizontal and vertical accuracy...anywhere from 6 ft at one site to .889 ft at another, horizontal is anywhere from .2ft to .6 compared to my GCP. I have a ticket open with Pix and Autel now just thought I'd try here see if anyone has had similar issues.

On your mapping mission settings it has PIX4D setting, did you have that on?

 

[elphtrooper]

On your mapping mission settings it has PIX4D setting, did you have that on?

Dude, great tip. I have sworn that off so hard I forgot it was there. I don't even know exactly what it does, lol.

 

[jahalnon]

I recently purchased the EVO 2 RTK series v3 as a backup to my M300 and I process the data using Pix4dMapper. I use the Emlid RS2+ for my base setup on a known point and the RS2 for my rover, feed correction from the base through Emlid caster service to my rover and drone. This setup has worked pretty well for my M300. I've flown a couple of test site with the EVO and my elevations are all over the place after processing in Pix4d. I found out from Pix you have to manually set the vertical CS in the image editor for Pix when you import the images to Ellipsoid with a 0 offset, it's set to MSL EGM 96 by default. For the output CS I use either Texas central or Texas South central and ellipsoid for VCS and set my geoid offset there..typically between -83 and -85 ft. Changing the vertical CS in the images editor fixed the issue with my elevation being off by 90 to 100 ft but I'm still seeing issue with horizontal and vertical accuracy...anywhere from 6 ft at one site to .889 ft at another, horizontal is anywhere from .2ft to .6 compared to my GCP. I have a ticket open with Pix and Autel now just thought I'd try here see if anyone has had similar issues.

Make sure you have a FIX on RTK in Smart controller. The Evo can take off without fix IF the top slider in RTK menu is off. It should be on, and you should not be able to take off without RTK FIX.

 

[elphtrooper]

Make sure you have a FIX on RTK in Smart controller. The Evo can take off without fix IF the top slider in RTK menu is off. It should be on, and you should not be able to take off without RTK FIX.

This is a good point but his errors in relativity would have been MUCH worse.

@anejojoe What were your camera movement residuals? Like this one from the DD report.

 

[anejojoe]

Make sure you have a FIX on RTK in Smart controller. The Evo can take off without fix IF the top slider in RTK menu is off. It should be on, and you should not be able to take off without RTK FIX.

Yep, always check that I have fix before I take off

 

[anejojoe]

This is a good point but his errors in relativity would have been MUCH worse.

@anejojoe What were your camera movement residuals? Like this one from the DD report.
View attachment 15293

 

[anejojoe]

Interesting, that image you have is the site I flew. I think this is the equivalent in pix

 

[anejojoe]

On your mapping mission settings it has PIX4D setting, did you have that on?

Probably not, didn't know there was a setting for that and I can't seem to find it.

 

[jmason702]

Probably not, didn't know there was a setting for that and I can't seem to find it.

Last menu option all the way right, ET DATA

 

[anejojoe]

Last menu option all the way right, ET DATA

 

[anejojoe]

I don't see that option, exactly where is it?