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mausquirk / skytraq-datalogger

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[patch] Support to SBAS (WAAS, EGNOS) and navigation mode #4

Open GoogleCodeExporter opened 9 years ago

GoogleCodeExporter commented 9 years ago 
Attached patch include support to SBAS (WAAS, EGNOS) and navigation mode.

Patch extends info command so that it shows SBAS and navigation mode status.
There is new commands to enable and disable SBAS (WAAS, EGNOS) and set
navigation mode and also command to reset factory settings.

Original issue reported on code.google.com by kalle.lampila on 23 Mar 2010 at 10:11

Attachments:

GoogleCodeExporter commented 9 years ago 
Can you please explain what SBAS/WAAS is for and why one would want to disable 
or enable it?  What is the behavioral difference between car and pedestrian 
mode?

Thanks!

Original comment by bsw114@gmail.com on 2 Jan 2012 at 7:21

GoogleCodeExporter commented 9 years ago 
Hi,

You can find basic explanation of SBAS example in wikipedia:
http://en.wikipedia.org/wiki/Satellite_based_augmentation_system#Satellite_Based
_Augmentation_System
http://en.wikipedia.org/wiki/Wide_Area_Augmentation_System
http://en.wikipedia.org/wiki/European_Geostationary_Navigation_Overlay_Service

I not know exactly what is difference of navigation modes but setting effect 
internal location algorithms tunings (probably Kalman filter setting and cutoff 
speed thresholds).

Original comment by kalle.lampila on 2 Jan 2012 at 10:38

GoogleCodeExporter commented 9 years ago 
[deleted comment]
GoogleCodeExporter commented 9 years ago 
Kallee,

My question about navigation mode was because when I toggled it the other 
parameters reported by --info were unchanged.  My original thought was that 
these were just presets.  I guess I'll leave it in car mode just to be safe.

My understanding from this is that SBAS should be enabled since it may aid in 
situations where there is poor visibility of the sky?  I don't see any obvious 
disadvantage.  Am I understanding this correctly?

I also see that you added POWER_MODE to datalogger.c although no added 
functionality.  I'm guess this is related to the Power Saver mode that I see in 
the Windows client, although I can't find any documentation explaining how this 
mode differs from the default.  Why wouldn't I want to always Power Saver mode?

Do you think that POWER_MODE support in skytraq-datalogger would add value?

Thanks again!

Original comment by bsw114@gmail.com on 2 Jan 2012 at 5:10