DEPOS Introduction / Tutorial?

Hej Everybody.
I want to ask there is something like a introduction video or PDF on best practices on using the DEPOS post-processing for the initial stationment "in the wild"? I did searching on the Javad-Website and this forum, but I did not find a step-by-step guide on how to establish a maximal precise base setup without having any correction service or already established coords available. This would be of great help for me.

Thanks a lot and best wishes!
 

Eugene Aksyonov

Well-Known Member
Hello Felix, DPOS service suppose postprocessing of collected data by the rover and base. So the standard setup is pare - base (T2 + modem or T3 or T1M) with communication channel( for wild areas UHF should work good) for corrections to the Rover (Triumph-LS). It doesn't matter how precise you set your base at unknown point because DPOS will process base later and adjust rover points taken from the base automatically. Generally that is it. We have some materials that explain DPOS service. Here some docs and how to use it with Javad Mobile Tools mobile app in case you have no Triumph-LS:
Hopefully this should help.
Regards!
 
Dear Eugene,
Thank you very much for your answer and the helpful links.

I am running a LS / T2 / UHF combination and my current workflow for initial setup looks like that:
1. / Setup at a marked unknown point 1 and observation with the LS as long as my time allows.
2. / Setup of base T2 on this point 1 as "base with known coords" using the coords of my first observation.
3. / Starting surveying and adding additional benchmarks by measuring in "boundary action profile".

Can my workflow and my initial setup be improved by adding DPOS to the list? In my last setup in Iraqi Kurdistan two potential CORS stations (IZBL and IZQW) were in resonable distance. How can I find out, if DPOS is able to postprocess my collected data and is DPOS able to tell me which CORS stations are broadcasting? Or is DPOS a US-only feature?

Thanks a lot for any input!
Felix
 
I don`t have access to any RTN or known state coord points here. Therefore I establish a autonomous position by a 900 epochs "acceppt all" observation. I use the LS for that, because the T2 just has GPS and GLONASS enabled.
 

Shawn Billings - Javad

Active Member
JAVAD GNSS
I don`t have access to any RTN or known state coord points here. Therefore I establish a autonomous position by a 900 epochs "acceppt all" observation. I use the LS for that, because the T2 just has GPS and GLONASS enabled.
I don't think you're going to see any improvement in 900 epochs autonomous over the Triumph-2 autonomous position. DPOS is definitely superior to an autonomous position whether from 900 epochs on LS or a single epoch on the Triumph-2.
 
Thank you again for all the input towards a better setup routine. I think my main misconzeption was, that I thought that DPOS was some kind of PPP service, while its closer to a improved post-RTN service if I understand correctly. Since there is no publicly avaible CORS-Networks in countries I work in, I will now continue to use a autonomous position for my setup. For the long winter-time I plan to "dig in" on proper PPP-routines, to be able to compute even better inital positions with the LS.
 
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