i read lots of thing about gps error in diamond [cant find signal ].
but what is the final word and final solution for gps error ?
Running on the latest europe english rom and i have a bit of lag (1-2 seconds) in igo. The next version should fix it for good, but by my standards a 2 second lag is critical only when you're going waaaay too fast . My iGo finds the satellites in under 10 seconds (or a minute if i "clear" the gps data - also known as a cold start).
Yestarday i used the gps in a canyon 10 meters wide and 70-80 meters deep. Didn't expect it to work but it did...
Related
as per subject what is the reasonable time for gps fix? can installed applications effect gps fix? what about clouds? could it be hard to get fix in cloudy whether?
Don't know whats normal but sitting in my house with TT I get 3-4 bars in about 5 seconds once I open TT. This is on the kaiser not the fugly
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goto www.gpspassion.com and you'll find a wealth of gps info. Reasonable time with quick gps is about 5-20 seconds with a good signal (outside) on the kaiser. Clouds can affect things but I've never seen it hamper anything.
I wonder if there is a difference in aquiring signal between the Kaiser and tilt? I have not seen much issue on the kaiser but there are alot on the tilt on several boards?
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my kaiser takes very long at the moment
It can take up to a minute or so if you haven't used it in a while. Sometimes it pretty quick (like <15 seconds, esp when it has been used in past hour or so).
I used the GPS today for a road trip. . . fired up QuickGPS and then launched my mapping software. It only took about 10 seconds for the software to "find" the onboard GPS -- and this was the first time I had used it in the 24 hours I've had it.
You need to use QuickGPS first.
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?
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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.
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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.
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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...
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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.
I9000XXJPM. Some say GPS is fixed and its perfect now. Is that true ???? Please share your experience.
Galaxy S I9000XXJPM still not the best GPS
varunkumars said:
I9000XXJPM. Some say GPS is fixed and its perfect now. Is that true ???? Please share your experience.
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Hi, I've tried I9000XXJPM. That version still has some GPS limitations. The version seems better than 1 or 2 months ago (the position is more exact) but it makes long time to converge. It seems Samsung has added a kind of position smoothing/averaging (~30 sec time constant).
So, I would conclude that I9000 is still okay for GPS driving but not the best one (I drive often with it; GPS Navigation works fine but finds the wrong street 5% of the time in average, mostly in cities or crossroads). After some benchmark with other Samsung and HTC phones, I can say that I9000 is definitely not the best one.
Some more detailed info about my benchmark:
1- I camp to a certain location and observe that my Galaxy S Google Maps app finds my location with +/- 5m within ~20-30 sec (with the help of the GSM triangulation so-called A-GPS).
2- I move 20 meters away (it takes 10 sec to walk).
3- Every 5 seconds I see the blue arrow slowly moving in the direction I am going to, with a delay of ~10-15 seconds.
4- After 60 seconds my Galaxy S has found my new location with +/- 5 m precision.
5- When I move back to the original position, the same delay/smoothing towards the original position is observed; it takes again 60 seconds.
My two benchmark phones (HTC, other Samsung) don't show that smoothing effect. Every 5 seconds (10 seconds sometimes) my current position is updated correctly (still with +/- 5 m precision).
I'm starting to believe that the problem is a hardware design problem (maybe noisy GPS antenna, influenced by other RF signals, maybe GSM antenna), and Samsung implemented a kind of smoothing/averaging effect in order to compensate the imprecision and let the applications point to more exact location, at the cost of long time to converge.
What's the opinion of GPS experts around?