javad and rtk drone

TonyC

Member
First, you will need to create a hotspot with your phone.
Then on your laptop, connect to the phone hotspot, and use Net Hub connect to your T2 and create a local ntrip.
Connect your RC for your drone to the phone hotspot and configure the ntrip parameters to match that of Net Hub.

I have had success using a T3, but I am not familiar with the T2.
 

A.lacey

Member
In our office we run a program to post prosses the photos with the base data in stead of running rtk with drone.
 
The problem casting the ntrip corrections from the base receiver wifi or laptop wifi is that you have to launch the drone within wifi range of the base.

Since the apparent demise of JCors, we have signed up for free accounts at Emlid and RTK2GO (SNIP) to use one of their free ntrip casters. We use two cell phone hotspots, one each at the base (T3 or old T1) and rover (LS+). The rover cell can also gets attached to the drone (Autel RTK) controller when needed. Unlike JCors, not all the rover devices have to be Javad.

We start the base from Jfield UHF as normal to get the base coordinates set in the base receiver and DPOS ready/logging. Then detach bluetooth base/rover. You can then start NetBrowser on the base cell (already set for hotspot), connect net browser by bluetooth and execute the Base Setup Wizard, ntrip. NetBrowser apparently imports the LatLong from the base. I failed trying to hand enter that data. Once your RTK2GO or Emlid credentials are entered into the NetBrowser, JField and your controller software (Autel Explorer for us), it gets stored for good. Startup is simple next time.

Also, we can post process the drone stand-alone gps data and base rinex files using RedToolBox and Agisoft Metashape.

Steve Chatelle
 
is there a reason to have a base and rover for the mission ? Or is the base static sufficient with the software available ?
 

TonyC

Member
You can use the rover side to set GCP's before you fly the mission and also tie in existing control. If you set your base on an unknown point you will need to collect sufficient data to get an OPUS solution
 
We always post process the drone logs. We have the base and rover going because we always shoot gcp and topo (bottom of curbs, etc.) that we don't trust off the aerial. We usually record the drone rtk too, just because. We have had a couple inspection surveys that we had to fly close to buildings where wanted the drone tighter to the mission plan.
 
Our rtk module (Autel) outputs two logs: the satellite observations and the exact time that the pictures are snapped, so I would expect that you definitely need the DJI module attached.
 
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