Status of the Location Service (GPS, A-GPS, GLONASS, BeiDou, Galileo) ?
-
@gpatel-fr Actually all that A-GPS does is significantly (normal GPS is 50b/s) speed up downloading the satellite orbital data (almanac and ephimeris) through cell towers. It can also help with the triangulation as the phone knows it's near to the cell tower.
-
thanks for the tip, I have SatStat running since half an hour now on the phone, alas it don't find me any latitude nor longitude. Displays lots of small red bars and says Satellites 0/30, from the few I understand it's not very good :-). Either I missed something in the config options, or the problem with FP5 Gps is too basic for SatStat to solve.
Running Waydroid for the first time on the UT phone is a bit disturbing experience but diving into that would be off-topic here.
-
said in Status of the Location Service (GPS, A-GPS, GLONASS, BeiDou, Galileo) ?:
Either I missed something in the config options
actually I missed something even more basic and it is that Gps signal is a lot weaker than phone, so I only tried in 2 parts of my home and I got nothing, but when I got out in the air, the phone eventually found a signal. Thanks to @Vlad-Nirky for helping to correct my foolishness. I have marked as solved the topic I created about that.
-
@Vlad-Nirky thanks for this hint, this is way better with such applications. I used GPSTest which shows a sky map with available satellites and their type.
It showed me lot of GPS and GLONASS sattelites in my area and only one Galileo (I'm located in Europe that surprised me).
When the location has been fixed, it used only GPS ones. I tested only 5 minutes that can be just a coincidence.
As these applocations can leverage the A-GPS system, could it be possible to do the same in Ubuntu Touch applications and/or system ?
-
@adorsaz said in Status of the Location Service (GPS, A-GPS, GLONASS, BeiDou, Galileo) ?:
As these applocations can leverage the A-GPS system, could it be possible to do the same in Ubuntu Touch applications and/or system ?
Waydroid applications probably get their A-GPS from Google; if that's the case, that's a privacy issue which we want to avoid in UT. But I've heard that a Googlefree version of A-GPS is being worked on.
-
@Moem
From Google?
Any evidence of this?I thought it was those:
XTRA_SERVER_1=https://xtrapath1.izatcloud.net/xtra3grc.bin
XTRA_SERVER_2=https://xtrapath2.izatcloud.net/xtra3grc.bin
XTRA_SERVER_3=https://xtrapath3.izatcloud.net/xtra3grc.bin -
@Vlad-Nirky No evidence, and it may be a misunderstanding on my end. As for what you posted, I don't know what any of that means.
-
@Moem said in Status of the Location Service (GPS, A-GPS, GLONASS, BeiDou, Galileo) ?:
I don't know what any of that means
it's a service provided by Qualcomm
https://calyxos.org/docs/guide/security/network-activity/
See an analysis here:
TLDR: backdoor is too strong a word, but there are privacies issues. If the software is rewritten as open source, this could be less problematic.
-
@gpatel-fr said in Status of the Location Service (GPS, A-GPS, GLONASS, BeiDou, Galileo) ?:
TLDR: backdoor is too strong a word, but there are privacies issues.
Well, then I was only mistaken about Google being the culprit here. Thank you.
-
@gpatel-fr said in Status of the Location Service (GPS, A-GPS, GLONASS, BeiDou, Galileo) ?:
See an analysis here:
TLDR: backdoor is too strong a word, but there are privacies issues. If the software is rewritten as open source, this could be less problematic.
Thanks for all these details about the AGPS privacy issue, I understand the idea behind this.
It seems it's hard to have a good signal when the phone is inside a car (all satellites were red in GPSTest). I think I need another device as navigating system for my car.
I'll check next days if my device could have locaiton fix with Glonass, Beidou and Galileo satellites. I expect using more data sources should improve measurment quality, isn't it ?
