[Qgis-user] Trimble GeoXT 2005 Accuracy

[Springfield Harrison]

Hello Garth,

Thanks very much for that reference.  I have used the service in the past.

I'm in the middle of other work but may try to re-process some Map A 
files using PPP to see what changes.

Your work sounds more like surveying than mapping, interesting.

I do use the GPS reception planning tools but SV availability is 
certainly better than in the early days.

Thanks again . . . .

-----
Cheers, Spring



On 09/Mar/2021 09:01, Garth Fletcher wrote:
> Nicolas Cadieux wrote:
>> Kirk could be on the right track.  You could try PPP using this 
>> site.  You will need to create a user name and password.  Then, you 
>> upload the Rinex file.   I am 99% sure you can process point from 
>> outside of Canada. 
>
> I routinely use CSRS PPP to post process RINEX files from Southern New
> Hampshire (43°N, 72°W).
>
> Using an iGage iG3s (L1/L2 dual frequency, GPS + GLONASS) recording at
> 5 second epochs in forested areas, from post processing I get
>  30 minute recordings, 95% error ellipses < 1 meter
>  10 hour recordings,   95% error ellipses < 2 cm
>
> CSRS-PPP site is
> <https://webapp.geod.nrcan.gc.ca/geod/tools-outils/ppp.php?locale=en>
> enter your email address
> select Static and which NAD 83 epoch you want, or ITRF
> Submit a RINEX file (.zip compressing the file is encouraged)
> they will email back a detailed report
>
> You can submit for 1 of 3 levels of post processing
>  ultra-rapid : submit > 90 minutes after end of recording
>  rapid: submit > 24 hours after end of recording
>  final:  submit ~ 3 weeks after end of recording
>
> Major part of corrections are in ultra-rapid, the higher levels provide
> further refinements.
>
>
> FYI: Trimble provides occupation planning aids at
> <https://www.gnssplanning.com/#/charts>
> just enter your location and date and it shows you the DOP as
> a function of the hour of day.
>
> Cordially,