Many of these GPS fixes are bogus. People claim that after installing a new modem or new settings, their phone locks onto 10 satellites with 10m accuracy.
BUT have they ever checked to see if the 10m is really accurate? NO.
Mine locks onto 10 satellites with a 10m accuracy. But in Google Earth it shows me as being 40-50 meters away from my current location. On top of that, it keeps drifting even though I'm not moving!!!
Most people don't know what they are talking about. Also most GPS "fixes" are garbage. They work for some people, don't for others. Exactly with the same proportions as a stock ROM. My GPS is satisfying since JL2. Yes it takes a while to lock but at least it works.
BUT have they ever checked to see if the 10m is really accurate? NO.
That statements
not accurate either .
Just tested my GPS out of interest . Upstairs in a bedroom >phone on window .
Accuracy about 100% bang on the nose .
Only fix i have is that my GPS config file is set to a more local server exactly as faster fix does using JPY modem .
Swop from Google maps to My Tracks and its out by about 2 metres .
Co Pilot about 2 metres out .
jje
JJEgan said:
BUT have they ever checked to see if the 10m is really accurate? NO.
That statements
not accurate either .
Just tested my GPS out of interest . Upstairs in a bedroom >phone on window .
Accuracy about 100% bang on the nose .
Only fix i have is that my GPS config file is set to a more local server exactly as faster fix does using JPY modem .
Swop from Google maps to My Tracks and its out by about 2 metres .
Co Pilot about 2 metres out .
jje
Click to expand...
Click to collapse
swoop bim bam tralalala.....
Instant lock. Have the same accuracy, on the tip of the nose! For like 5 mins (sometimes less, sometimes more), then the marker starts jumping around randomly - WITHOUT moving the phone.
Try to disable a-GPS fixes + that other setting in JPY and check if its still "bang on the nose" or it will bang you from behind also.
Try to disable a-GPS fixes + that other setting in JPY and check if its still "bang on the nose" or it will bang you from behind also.
Its not on A-GPS when tested and its default settings as in past roms and accuracy has always been OK even with Eclair tested it enough times to be sure .
Yes it does often jump about but only INSIDE A BUILDING not in normal use .
If it had the GPS problems that some have it would have simply been returned to the vendor as unfit for the purpose for repair or replacement . Why keep something that does not work ???.
jje
PAGOT said:
swoop bim bam tralalala.....
Instant lock. Have the same accuracy, on the tip of the nose! For like 5 mins (sometimes less, sometimes more), then the marker starts jumping around randomly - WITHOUT moving the phone.
Try to disable a-GPS fixes + that other setting in JPY and check if its still "bang on the nose" or it will bang you from behind also.
Click to expand...
Click to collapse
How do you disable a-GPS fixes? I'm on Darky 9.0 with JL3 modem. I'm on Standalone, not Ms-assisted or ms-based...
JJEgan said:
Why keep something that does not work ???
Click to expand...
Click to collapse
PPL are crazy !!! Am telling you THEY are CRAZY!!!!
Seriously man , it jumps even clear sky view no building here (for me and I guess for some other ppl).
If it doesnt for you , you are one of the lucky ones . (If you was static outside a building for 5 mins and watched it, which I doubt but who knows )
montrealguy said:
How do you disable a-GPS fixes? I'm on Darky 9.0 with JL3 modem.
Click to expand...
Click to collapse
Huh sorry man, my reply was to the swoop guy and his working GPS . a-GPS is the thing where it gets the position from the GSM signal too I think? (user wireless networks option under Location ....) but it wont help you .
PAGOT said:
Instant lock. Have the same accuracy, on the tip of the nose! For like 5 mins (sometimes less, sometimes more), then the marker starts jumping around randomly - WITHOUT moving the phone.
Click to expand...
Click to collapse
OMG! I have the same story! I opened Google Maps, and then put on the GPS and put it to the window. It jumped to 30 meters from me for 5 seconds and then suddenly landed at my exact location and stayed there for 10 seconds.
THEN it started jumping around like a jackrabbit, even though I wasn't moving!
Related
I tried my Tilt with iGuidance and got very disappointed. The GPS has an issue following my position. It updates the position on average every 30 sec and by the next update I can really get off the quided track.
Other people tell me that something is wrong, as the arrow on the screen should be following me smoothly in real time, not jumping city blocks. The only configurable setting for the GPS is baude rate, but I tried all values and still the same. What could be the problem?
juliank said:
I tried my Tilt with iGuidance and got very disappointed. The GPS has an issue following my position. It updates the position on average every 30 sec and by the next update I can really get off the quided track.
Other people tell me that something is wrong, as the arrow on the screen should be following me smoothly in real time, not jumping city blocks. The only configurable setting for the GPS is baude rate, but I tried all values and still the same. What could be the problem?
Click to expand...
Click to collapse
are you in the city with a bunch of tall buildings??
also d/l htc gps and see how many sats your locked on.
I was mostly in the city, but no tall buildings. The GPS can lock me really good and fast, the reception is good, it finds like 8 sattelites. The only problem is it does not stay continuously locked on position, but lockes every 30 sec or so..
I installed the logging tool and will give it a try. Thanks!
What ROM and Radio do you use? stock?
I am using The NoThrills ROM (CE OS 5.2.19170 (Build 19170.1.0.0)), which comes with R 1.58.26.20.
Just tried the HTC GPS tool - not sure what exactly to look for, but it keeps logging very fast, the lines in the logger change at a rate e few per seccond, it always showed 7-8 satellites locked and yet did not update my position in real time, but probably every 30 sec.
juliank said:
I tried my Tilt with iGuidance and got very disappointed. The GPS has an issue following my position. It updates the position on average every 30 sec and by the next update I can really get off the quided track.
Other people tell me that something is wrong, as the arrow on the screen should be following me smoothly in real time, not jumping city blocks. The only configurable setting for the GPS is baude rate, but I tried all values and still the same. What could be the problem?
Click to expand...
Click to collapse
If you are using Iguidance 4 then this is a know issues with the GPS chip in the tilt. It will not work right, the only work around is to use a separate bluetooth GPS reciever and not the internal gps. The other way is to use a different GPS software as Iguidannce 4 is the only one that I'm aware of that has this issue....
Yes, I am using iGuidance 4. Where did you see about the issue it has with the Tilt? Can you post some link? I can see only positive feedback. Would be good to know that it is a software issue and not my Tilt.....
Hi, I use miomap. My GPS is not smooth too. I don't need to wait 30 seconds to update the position, but it may need 3 to 4 seconds to update the position. It is not as smooth as tomtom.
Check out a program called GPS Gate. This issue typically has to do with WM6.1 and iGuidance 4.0 not playing well together on the Tilt. GPS Gate reports the GPS feed into something that iGuidance 4.0 can be happy with. Here's another thread for more details...
http://forum.xda-developers.com/showthread.php?t=368373&page=2
i got a question on gps. HOw fast does your tytn ii gps find signal? mine takes forever like 3-4 min? is there a way to increase the signal search? thanks
Which radio are you using?
Mine takes couple of seconds max.
pinx said:
Which radio are you using?
Mine takes couple of seconds max.
Click to expand...
Click to collapse
I think it depends upon the radio a lot. Some radios are very quick (I am currently using NIKI XX.17 as I need quick GPS locks - now takes seconds not minutes), others are not.
When I first got my kaiser, T-mobile vario III the GPS was very quick to get a fix taking less than one minute to get the first fix after boot up and subsequently a matter of a few seconds.
Unfortunately this was about the only thing that was quick though, so I installed one of Dutty's ROMs which vastly improved the overall performance of the device for most tasks, except getting a GPS fix which all of a sudden was intolerably slow, sometimes almost impossible.
I experimented flashing various radios but nothing seemed to make much difference so I kind of gave up. The other day I upgraded again, to Dutty's latest ROM and all of a sudden my GPS performance is back to how it was when I first got the kaiser, despite the fact the radio version included in the rom is the same as the one I had before. So I'm very pleased about this, but also perplexed. I don't know what factors influence the speed of getting a GPS fix but for me Dutty's latest ROM is good so maybe you should try that.
One thing that I did notice is that getting a GPS fix was always quicker when travelling in the car not standing still.
look9001 said:
One thing that I did notice is that getting a GPS fix was always quicker when travelling in the car not standing still.
Click to expand...
Click to collapse
Which is strange... Normally GPS's are quicker to fix when stationary rather than moving...
I'll be getting mine soon, so once I have it, I will test with the T-Mobile standard and - if I get it installed, being a WinMob n00b myself that is by no means certain! - with Dutty's latest...
CescoAiel said:
Which is strange... Normally GPS's are quicker to fix when stationary rather than moving...
Click to expand...
Click to collapse
It is strange isn't it? But I'm sure it was true in my case. For example I once walked to work with the GPS switched on as a test, I was holding it in my hand so it had a direct line to the sky at all times. When I got there about fifteen minutes later it still hadn't got a fix. The next day I drove somewhere and after about two minutes it had a fix.
As long as I'm outside (or in the car) under clear sky, I get a lock in Google Maps or Telenav in only a few seconds. Inside my apartment, but near a window, Google Maps will eventually get a lock, but it can take it 3-5 minutes to do so. In my office, which also has a window but which faces out to a courtyard surrounded by brick walls (and up 5 stories above my floor), I just cannot seem to get a fix at all.
Outside with clear sky above though, moving or stable, it is very quick - never more then 10s and usually far less.
What kind of buildings and other obstructions were around you? In order to get enough fixes to pinpoint your location it will often have to see sats out to some pretty steep angles. One guy we met who does commercial GPS systems showed us where the birds were from out on a beach. The 4th one was only something like 20 degrees above the horizon out over the ocean.
Well i have a question.
When i use TomTom or IGO the position on the screen is always about 50 meters off to where I actually am.
So since IGO & TomTom Both have the same behaviour i guess i should look at the GPS module.
My old S730 was always spot on... when i looked at the screen and saw a turn on the left, there actually was a turn to the left.
Anybody knows how this can be solved ?
My TD2 does not have this problem, perhaps there is an issue with your particular phone?
I thoght about it before and found out that it was not inaccuracy but the delay GPS chip needs to calculate your position. Do one test. Some time when you stop at a red light and you know you've waited for about 5 secs, check your position then. I believe it will be accurate then.
I noticed that some GPS's try to calculate your current position based on direction and speed you had few seconds ago. I found out about it one time when I waited at the red light in a long tunnel. Obviously there was no signal there, but when I stopped, GPS kept on showing that I was moving about 40MPH for several seconds before it finally showed lost signal message.
Some GPS's do calculate your position ahead of time and some don't.
Maybe it was because i had assisted GPS turned on...
If you do a search on AGPS LAG (ANY HTCPRODUCT WITH AGPS) then you will see enough posts that speciffically deals with this problem...
My old phone is SPOT ON with TT and my new 2 times faster phone is less accurate, and in a street with lots of turns, take a-lefts etc it's quite important to rely on the machine. And when the machine says turn left on the next corner, is that left the one i am currently at or the one 20 meters ahead from where i am now....
It should be just as with my old phone spot on
Well disabeling AGPS definitely works...
I am now about 20 meters behind all the time. This seems acceptable although I keep finding it strange that my older phone was way more accurate.....
you mean disable QuickGPS or disable AGPS in Advanced Config??
It is definitely a lag issue, not a precision issue: my TD2 internal GPS is at least as accurate as my Qstarz bluetooth GPS logger, and this one has a dedicated large antenna and good GPS chipset. TD2 sensitivity is also comparable, maybe even better inside building, and the time before locking a signal from coldstart is also comparable or better...
BUT there is a lag of maybe 30 m around 50 km/h in my car, and it is is indeed quite noticeable for driving directions...No big deal for me, as I do not rely on voice instruction but always have a quick peak at the screen (I was bitten by ambiguous instruction often enough in the past with other GPS system to have developped this quick peak habit ;-) )..but this lag is indeed anoying...
I'd like to try the TD2 using the external GPS through bluetooth, if I find time to do it this WE I will post my conclusions...
well0549 said:
Well i have a question.
When i use TomTom or IGO the position on the screen is always about 50 meters off to where I actually am.
So since IGO & TomTom Both have the same behaviour i guess i should look at the GPS module.
My old S730 was always spot on... when i looked at the screen and saw a turn on the left, there actually was a turn to the left.
Anybody knows how this can be solved ?
Click to expand...
Click to collapse
I use to have the same problem as you, so, I've tried the tweak referred in this post http://forum.xda-developers.com/showthread.php?t=514912 and it did the trick for me.
I use iGo8 and NDrive and the accuracy improved a lot, it's almost spot on, no matter what speed I'm driving.
Regards,
I was in my mates Audi TT the other day. He has the built in GPS in the dash board. I noticed there was as much lag as you see on an HTC device.
Also was in a car a few months asgo with someone who had a stand alone TomTom device and that too had lag.
Unless you're paying thousands of Dollars for millitary grade navigation equipment, i wouldn't spare the lag issue another thought.
Not long now ...
There's a bigger lag comming if the media are to be believed (and based on everything that comes from the tele, radio and newspapers these days - there're probably not - they can't even get the weather right)
http://news.sky.com/skynews/Home/Technology/GPS-Network-Could-Fail-Next-Year-Leaving-Sat-Nav-Useless-US-Government-Accountability-Office-Warns/Article/200905315284843?lpos=Technology_Carousel_Region_4&lid=ARTICLE_15284843_GPS_Network_Could_Fail_Next_Year_Leaving_Sat_Nav_Useless%2C_US_Government_Accountability_Office_Warns
"
Unless you're paying thousands of Dollars for millitary grade navigation equipment, i wouldn't spare the lag issue another thought."
Diamond1 paid £150 was spot on. No Lag. The speed indicator on tomtom was very accurate, not like on the diamond2 where it takes over 2 seconds to show a speed change. I am surprised that not many people have noticed the slow and inaccurate GPS performance of the D2.
I have been hearing of numerous complaints about the GPS of the Galaxy S and was wondering if mine had an issue.
Having only GPS'd my location at a standstill with excellent (within 10 metre) results, I decided to use Google Navigation on a 15 kilometre trip from where I was to my home.
I can honestly say my GPS had pinpoint accuracy for the entire trip, not losing signal once. And when I mean pinpoint accuracy, I mean it felt like a satellite was right on top of me the entire way home.
Apart from Google Navigation using a weird route to get home (which I followed, only forcing the unit to reroute once), and speaking the street names like it didn't understand grammer, I'd say it was almost as perfect as my tried and true Garmin (which uses better routes).
So this isn't a gloating post, but I'm trying to understand what issues all of you have with the GPS, as I don't seem to be experiencing any.
P.S. I'm still on Bell's official 2.1 firmware (latest one, I believe its JH2).
Thanks
Go for a walk. Stop for a coffee somewhere. Walk again. Stop to enjoy something beautiful. Record your experience with My Tracks. Share you track. Then we can discuss GPS quality.
I hope it all works excellent for you.
Regards!
Sent from my GT-I9000 using XDA App
Nice story but why post it as a [Q] and in development forum
NetCopAD said:
Go for a walk. Stop for a coffee somewhere. Walk again. Stop to enjoy something beautiful. Record your experience with My Tracks. Share you track. Then we can discuss GPS quality.
I hope it all works excellent for you.
Regards!
Sent from my GT-I9000 using XDA App
Click to expand...
Click to collapse
Ditto. 10 char.
NetCopAD said:
Go for a walk. Stop for a coffee somewhere. Walk again. Stop to enjoy something beautiful. Record your experience with My Tracks. Share you track. Then we can discuss GPS quality.
I hope it all works excellent for you.
Regards!
Sent from my GT-I9000 using XDA App
Click to expand...
Click to collapse
Ok, I never really use my GPS that way, but for experimental purposes I will. Downloading the program now (not factory software with Bell I guess). Is there a certain distance I should be walking? And what should I notice to report back? That my tracks were the exact route I took?
Having said that, if there is a problem, could it not be a specific problem with the way MyTracks itself cooperates with the GPS? I mean I find it strange the GPS works flawlessly with Navigation (stops and lights, stop signs etc) but not with My Tracks? I dunno.
gllu said:
Nice story but why post it as a [Q] and in development forum
Click to expand...
Click to collapse
You're right.. didn't realize I posted it here until after I posted it. I leave the moderating for moderators, but my apologies just the same. Moderators, please move this to an area which is more suitable to avoid posts like these.
greeced said:
Ok, I never really use my GPS that way, but for experimental purposes I will. Downloading the program now (not factory software with Bell I guess). Is there a certain distance I should be walking? And what should I notice to report back? That my tracks were the exact route I took?
Having said that, if there is a problem, could it not be a specific problem with the way MyTracks itself cooperates with the GPS? I mean I find it strange the GPS works flawlessly with Navigation (stops and lights, stop signs etc) but not with My Tracks? I dunno.
Click to expand...
Click to collapse
Not just My Tracks, you can try any other similar apps. That's just the most popular and widely used one.
The thing with Navigation is, it KNOWS you're supposed to be travelling on the road - so even if the actual GPS data suggests that you're 5 meters off the road, the navigation software "corrects" it and puts you back on the road.
Use My Tracks to record a small walk. Make a couple of stops. It ALWAYS puts me 15 feet off the road. And when standing still, it keeps moving around restlessly. Ugh
It's just that navigation software generally has the ability to use road information to supplement the raw GPS data and thus yields seemingly better results. It snaps to roads, approximates expected position etc.
My Tracks and other similar software just records your track without any awareness of roads so the resulting info (track) is pretty close to the raw GPS performance.
Standing still is when the GPS problem is most evident. Your reported position just jumps around, sometimes sending you a hundred meters away or more.
Sent from my GT-I9000 using XDA App
Ok,
Went for a short walk using my tracks... Around a rather large block and through a path in a park, where I sat down on a park bench for 5 minutes, got up, and continued the trail back to the main road, then back to my house.
I noticed when I started off, it showed me on the other side of the street, but quickly corrected itself as soon as I started walking to the right side of the street.
I then stopped at a communal mail box, I noticed the gps had 'bounced' to the other side of the street but as soon as I started walking again, it corrected itself.
The other side of the street on those two occasions was 15-20 feet away (Its a residential side-street), which to me has the GPS as being extremely accurate. Even Google's disclaimer on "My Tracks" states:
Under optimal conditions the location can be +/- 20 feet (6 meters).
And thats exactly what it was with mine.
After the communal mail box, it was extremely accurate to less than 2 metres the rest of the trip/way home. The circle around the orange arrow was extremely small most of the way, only getting larger when I entered my house.
NetCopAD said:
It's just that navigation software generally has the ability to use road information to supplement the raw GPS data and thus yields seemingly better results. It snaps to roads, approximates expected position etc.
My Tracks and other similar software just records your track without any awareness of roads so the resulting info (track) is pretty close to the raw GPS performance.
Standing still is when the GPS problem is most evident. Your reported position just jumps around, sometimes sending you a hundred meters away or more.
Sent from my GT-I9000 using XDA App
Click to expand...
Click to collapse
See, standing still with me is absolutely bang on within 10 metres. If you're talking about when you first fire up the GPS, then I'd agree with you, but the hundreds of metres away is not your GPS position. Its where your cell provider is reporting you to be, either by the tower, or triangulation.
The GPS then using that information, as per my guess, to hone on where you are. and it actually finds me within 5 to 10 seconds.
Oh and as for navigation, I'd have to disagree with your assertion about the GPS and the knowing your on a road statement. I live in an area where new roads are built all the time, and those roads are not on any mapping system including garmins, and the GPS will follow you anyway, just go into a constant cycle of
"Recalculating" or "Turn Around" or "Make a U-Turn". (At least that's what my garmin does when I test it), but it still follows me up to and including the road that is actually on the GPS, and I'm sure this GPS will do the same.
Either way, I'm happy that I don't have any issues with the GPS of this Galaxy S. Seems to work quite well.
same here, once i intentionally drove into this field of newly paved road, with no houses foundation even build on them, it was so funny to see myself on google map going into what seems like an empty space
but with the tracking enable, it was able to draw good lines of where i drove over for the missing streets on the map
greeced said:
Oh and as for navigation, I'd have to disagree with your assertion about the GPS and the knowing your on a road statement. I live in an area where new roads are built all the time, and those roads are not on any mapping system including garmins, and the GPS will follow you anyway, just go into a constant cycle of
"Recalculating" or "Turn Around" or "Make a U-Turn". (At least that's what my garmin does when I test it), but it still follows me up to and including the road that is actually on the GPS, and I'm sure this GPS will do the same.
Either way, I'm happy that I don't have any issues with the GPS of this Galaxy S. Seems to work quite well.
Click to expand...
Click to collapse
Anyone else have issues with their GPS?
Mine seems to get confused about where I am even though I have high accuracy enabled for location.
If I just go by the voice prompts it would get me lost.
It tells me to keep going on a street I've already turned off of.
The map seems right but is as if the gps needs to be calibrated or something.
Will Rickards said:
Anyone else have issues with their GPS?
Mine seems to get confused about where I am even though I have high accuracy enabled for location.
If I just go by the voice prompts it would get me lost.
It tells me to keep going on a street I've already turned off of.
The map seems right but is as if the gps needs to be calibrated or something.
Click to expand...
Click to collapse
Mine did this for like 5 minutes and then locked on and was perfect every time since.
Will Rickards said:
Anyone else have issues with their GPS?
Mine seems to get confused about where I am even though I have high accuracy enabled for location.
If I just go by the voice prompts it would get me lost.
It tells me to keep going on a street I've already turned off of.
The map seems right but is as if the gps needs to be calibrated or something.
Click to expand...
Click to collapse
Mine is finnicky as well for GPS games like Ingress. It's a noticeable lock on lag difference compared to the HTC One M8 which was pretty much spot on every time without much drift. I hope it'll get patched in the future :]
Sometimes the solid circle inside my GPS icon flashes rapidly and other times the whole icon appears and disappears several times a second. Any idea what's going on with that?
When using Waze to navigate, I often lose GPS lock if the phone is resting on my leg. Returns when I lift the phone.
I downloaded GPS status and did the compass calibration thing.
We'll see if that makes any difference next time I use it.