Accuracy Estimate Reporting

[AgileEngineeringLLC]

Is your feature request related to a problem? Please describe.
Not a problem, just an idea. It would be really nice to have displayed the current estimate of the filter position accuracy. For example, in U-Center when you're in RTK-Fix you can see that your (reported) accuracy is 0.035m for example, which is very helpful. The reason this is helpful is that RTK-Fix has a fairly wide range of expected accuracy, say 0.015m to more than 0.050m. So this gives you an indication of how well your RTK-Fix lock is that day. Same is true for RTK-Float. [By the way, terrific tool, MUCH easier and more reliable than U-Center!]

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Would you be willing to contribute a test device?

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[semuadmin]

Hi @AgileEngineeringLLC

So if I understand correctly, it's the hAcc (horizontal accuracy) attribute you're after, in which case this is already supported by PyGPSClient and displayed on the main banner.

However, the default NMEA stream output by u-blox receivers does not contain a hAcc value, You have to enable additional message type(s) in order to receive it. Any of the following message types will provide an hAcc value:

NMEA:

• UBX-00 (a proprietary u-blox NMEA message type only available on u-blox receivers)

UBX:

• HNR-PVT
• NAV-HPPOSLLH
• NAV-POSLLH
• NAV-PVAT
• NAV-PVT

If you enable one or more of these message types and are in RTK mode, you should see the hAcc value in PyGPSClient's banner slowly creep down from a new meters to a few centimeters. In the screenshot I display in the PyGPSClient's README, it shows an hAcc of 1cm (the minimum reported).

Try this and let me know how you get on.

[semuadmin]

Hi @AgileEngineeringLLC

Any joy?

[AgileEngineeringLLC]

yes, did a test survey a couple of days ago, got horiz accy of about 26mm in rtk fixed, also collected raw ubx measurements at same time. works great!!DonDon KellyLinkedIn: www.linkedin.com/in/kellydakCell: 281-221-28534403 Orange Leaf CourtHouston, TX 77059On Jan 29, 2023, at 3:45 AM, SEMU Admin ***@***.***> wrote: Hi @AgileEngineeringLLC Any joy? —Reply to this email directly, view it on GitHub, or unsubscribe.You are receiving this because you were mentioned.Message ID: ***@***.***>

[semuadmin]

Ok I'll close the issue now.