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Hi people,
Everyone is so excited with GPS navi solution, I was wondering if there is currently a software that allows basic navi using the Cell ID Broadcaseted from our current GSM network. I know that it may not be as accurate as a GPS navi system but it should be more that enough to tell the navi software to load the correct map and allow one to see what is around your area.
Well there are other advantages over GPS:
- Able to use the navi system undergound where GPS signal is not reachable. Eg, basement carpar, underground highways, etc. You will be able to use it whenever there is GSM coverage!
- No expensive GPS hardware required. The idealised situation is that the PDA is able to pair a bluetooth enabled handphone and the phone will feed the navi software with the current cell ID. If one have a XDA, that would be even better! You can then use your blue connection for your BT headset!
I have come across this software called Agis Navfone. Too bad it runs on Symbian Phones only... Does anyone out there have any ideal? If not, why not we can start some development in this direction? I'm a hobbist programmer, maybe someone can point to some info that shows me how to extract CellID in PocketPC. There's another what is to programme a virtual GPS device which will actually convert the CellID of the current network at translate it to something which most navi software will understand. THanks.
http://www.navizon.com/
Does anyone know of the best mapping software that i can use while on the road, so I don't have to connect to the internet or gprs.
Also is the cingular 8125 GPS compatible, what service does it use?
Thanks guys,
JW
No onboard GPS...
As far as an installed app I use PocketStreets.
If I have Inet Access I just use Google www.google.com/gmm/
i use copilot 6 for ppc for onroad satnav and memorymap for off road gps guidance
both require a gps reciever which you are best off getting as a bluetooth one.
but im in the UK, might not be the best options for your country
i use iguidance by inav. Did a lot of research on bluetooth recievers as well and settled on the Globalsat BT 338. (Sirf III)
The mapping software is excellent and accurate. I also looked at Copilot but it was $170 instead of $100 for iguidance. Also, it could use a bit more processing power. The inav software is one of the smallest footprint gps software but still very full featured.
I'm very happy with it.
GTIMANiac said:
No onboard GPS...
As far as an installed app I use PocketStreets.
If I have Inet Access I just use Google www.google.com/gmm/
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isn't there a program that I can download that install maps by state or the USA, because i never know when I'll need it. I don't want to just search small maps using pocketstreets...
i have a program, called GIS RUssa. it is very handy, but expensive. may be someone has a keygen for it?
http://nanika.net/metro - it`s a software that features almost any city in the world giving complete direction on how to reach from Street A to Building Z. Try it out. It`s free
Regards,
NRGY
unfortunately that metro prog is only for the bus system but is there another program out there that actually does from point a to point b like mapquest or something like that
I agree with IdeaDirect that the iNav iGuidance software is a winner. I have the Belkin variant of this software with a Belkin GPS (rebadged Fortuna Clip-on), but I haven't installed the software on the MDA yet. It has been installed on my Ipaq h2215 for two years and works very well. This software is rebadged by many resellers, including iNav, PrymeNav, and is used in numerous automotive applications.
But the version I have (1.1) is supposedly not compatible with WM5, according to iNav anyway, and reportedly only 2.1.3 or higher will work. When I approached iNav they suggested waiting until late June or early July, as a new version (v3) will be introduced. Since there is a 30-day window for free upgrades, buying now would require a paid upgrade to v3. This is the route I am going to take, as I can do without the GPS for six more weeks.
I agree with IdeaDirect that the iNav iGuidance software is a winner. I have the Belkin variant of this software with a Belkin GPS (rebadged Fortuna Clip-on), but I haven't installed the software on the MDA yet. It has been installed on my Ipaq h2215 for two years and works very well. This software is rebadged by many resellers, including iNav, PrymeNav, and is used in numerous automotive applications.
But the version I have (1.1) is supposedly not compatible with WM5, according to iNav anyway, and reportedly only 2.1.3 or higher will work. When I approached iNav they suggested waiting until late June or early July, as a new version (v3) will be introduced. Since there is a 30-day window for free upgrades, buying now would require a paid upgrade to v3. This is the route I am going to take, as I can do without the GPS for six more weeks.
I'm surprised nobody has mentioned Tom Tom. I've been using it on a Palm device and now just moved over to the MDA Vario and it works great on the Vario. I've only done approx 45,000 miles using Tom Tom over the last 19 months, and it has not once got me lost. To me it has been worth every penny. I use a Holux GPSlim 236 BT receiver which is excellent.
Im new to this gps things. So i need some type of bluetooth receiver to hook up to my wizard? Also when I get this software and device do I need to pay for satellite fees or anythign or is this map stuff free when I make the initial purchase?
Thanks
JW
[email protected] said:
Im new to this gps things. So i need some type of bluetooth receiver to hook up to my wizard? Also when I get this software and device do I need to pay for satellite fees or anythign or is this map stuff free when I make the initial purchase?
Thanks
JW
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Yes, you need a Bluetooth GPS receiver. One of the best is Holux GPSlim236 or Globalstat BT338. I have the Holux & can highly recommend it.
If you buy for example Tom Tom, which again I highly recommend, you get the maps as well, but depending on the package, you can buy it with Tom Tom's Bluetooth receiver which is also very good.
There are no other fees. Unless you want to upgrade your maps at a later date. No map from ANY sat nav supplier will ever be 100% accurate.
The wizard does not work with wired GPS devices. But will work with a bluetooth headset/carkit as well as a bluetooth GPS receiver at the same time.
Take a look at these sites:
www.pocketgpsworld.com
www.tomtom.com
GoldLantern bluetooth GPS
I bought a GoldLantern bluetooth GPS receiver, it came with a download of "free" Mapopolis software - but thats where they get ya - the software is free but the maps definitely are not. However for a hundred bucks the maps seem to be pretty detailed. I have been using the demo version of the maps that expire after some number of days because my travel habits simply aren't that repetitive but I may eventually buy the subscription to all the North American maps.
Costs? Well, the MDA naturally which was about $370 with AZ taxes. $149 for the GPS receiver at Fry's Electronics (i paid too much but had to have it "now"). about $70 for a mini-SD 1GB card (also too much but had to have it "now") to store the maps. I haven't bought the maps yet and the GPS receiver is not "tied" to the application you use to navigate, I still might do TomTom but actually sorta like Mapopolis...
Performance is reasonably good provided Mapopolis is the only thing running. It takes the GPS receiver a minute or two to get a fix on your position.
I've used it in Phoenix, San Diego/Orange/LA counties in CA, and Seattle. In Phoenix its more of a convenience than anything else since I live here and don't necessarily need a GPS to navigate all the time, but it made business travel an absolute joy. No more trying to decipher the under-detailed rent-a-car map they give you along with the blank look when you ask if they know where your nationally known name brand hotel is.
In Seattle it was an absolute joy to use, I went on citysearch and figured out what kind of food I was going to eat that evening without any regard to navigational concerns. I had the mapping layers for King and Pierce counties loaded and Mapopolis even "knew" the names of some non-chain locally owned places that I'd been to in the past but hadn't a clue how to get to. The directions were accurate although the machine pronunciation of some of the street names was a little hilarious and it told me about turns in a timely fashion.
In Southern California I bumped into some limitations, probably becaue my usage pattern was a little different on those trips. I had LA/OC/SD counties loaded in memory the whole time so that could also have impacted performance and I was doing enough driving that I was also using my XM Roady2 for music and traffic updates. The XM (or Sirius) might be a relevant factor because the frequency band used by XM/Sirius is fairly close to Bluetooth, or 802.11b for that matter. All I can say is this: listening to XM and occasionally talking on my bluetooth headset at the same time, Mapopolis occasionally did NOT keep up with turns. At one point along I-5 south of San Diego it got confused and thought I was on surface streets which made for some interesting, if rapid, verbal directions from it. I think the factor was more the use of the bluetooth headset at the same time because once i ended the phone conversation mapopolis perked right back up performance-wise.
The battery life running mapopolis and bluetooth constantly - as well as the constant fascination with wanting to see my speed and direction causing the screen backlight to be on, caused the battery to drain very quickly - like 3 hours of usage had the battery almost 75 percent drained.
It's a good combination, but for the less technically inclined (and god help someone non-techie who buys a t-mobile mda...) the $500 garmin dashboard wart will do the GPS bit equally well without a steep learning curve. The learning curve to get this set up was near vertical but well worth it if you have the patience to fiddle with it. I.E. if you struggle a bit with your MDA, bluetooth GPS is not for you! Its also not something to learn how to use ON a trip, you definitely want to get the hang of it in your own local area before you put your complete trust in it in an unfamiliar place.
I've got problems with the GPS on my Polaris and I'm wondering if anyone else has the same issue: the accuracy is abt 5-15m off and it updates less than 1frame/sec regardless of the gps software I use (tomtom, google maps or garmin xt) My Radio version is 1.64.08.21 Murata and the rom pdaviet v16
Can anyone point me towards a solution for this please? Thanks!
To my knowledge gps is off target for a reason. All comercial versions are innacurate either in time or position so you cannot use it for war or something like it. If the 5 to 15 meter difference is to much I do not know.
pereirald said:
To my knowledge gps is off target for a reason. All comercial versions are innacurate either in time or position so you cannot use it for war or something like it. If the 5 to 15 meter difference is to much I do not know.
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Thanks for your answer pereirald, I knew that commercial GPSs are off so they can't be used for military purposes but the GPS on my Polaris is annoyingly slow. If I compare Garmin mobile XT runnin on my polaris with a friend's Garmin nuvi 760, his is smoother, updates faster and slightly more accurate...so any1 knows whats going on here? Is it only me with this issue or it happens on all HTC phones with Qualcomm chips?
I am on the latest udK rom using radio 1.64.08.21
I can GPS sync inside buildings
Syncs VERY fast
I also find it very accurate and def not 15meters off
Actually I also use Garmin XT and most of the time I can even pinpoint me using "Where am I?" but sometimes it does not give the right door but the neighbours. So I guess there is an up to 5 meter innacuracy. Being slower one should expect: The the chip isnot dedicated is it? It does other stuff while we are trying to use GPS. So you could try to things:
1) Minimal services running and disconnect phone (Airplane mode)
2) I don't know but that is a possibility that you will get different results with different rom. (I think I do, altough I haven't measured it).
Hope it helps
atl4ntys said:
I've got problems with the GPS on my Polaris and I'm wondering if anyone else has the same issue: the accuracy is abt 5-15m off and it updates less than 1frame/sec regardless of the gps software I use (tomtom, google maps or garmin xt) My Radio version is 1.64.08.21 Murata and the rom pdaviet v16
Can anyone point me towards a solution for this please? Thanks!
Click to expand...
Click to collapse
The accuracy depends on the number of satelites as well.
I noticed that the GPS chip of the TC is more nervous then a SirfIII chip like the one I had in my MIO A201.
But both the MIO A201 and the TC didn't show a better accuracy then around 10M.
Thanks for your replies guys, I did some testing over the last 2 days and after taking a trip in the middle of the country with the GPS on, I was surprised to see that it fixed itself At home is not showing me 5 doors down the road and in someone's garden anymore and when I walk/run with it, it pinpoints my location within 5m. The smoothness is still not there even if I turn off the music player and any other progs that I had running in the background, but I know thats because of the lack of proper graphic drivers
So in conclusion the accuracy is down to these 3 things:
1.radio flash not os-rom update.
2.number of satellites it connects to.
3.apparently driving around a bit
Cheers!
In case you use google earth, its the program which doesnt update quickly enough. The receiver does...
The receiver has a very irritating 'feature' built in which is very annoying when trying to use your GPS unit while walking: to make car navigation less jerky and stop you from jumping from road to road, the receiver doesnt update the position anymore after you came to a stop (or move slowly, eg: by foot ). It updates again after you covered several meters of ground and keep moving. This might be useful in your car where you can move fast and steadily, it's very very annoying if you try to find something by foot. The 'feature' is hardware-based, by now no one managed to turn it off.
Edit: uuhm... yes, of course the Radio. The Operating System part of the ROM only houses programs and such, the hardware-near stuff like phone functions, bluetooth and wifi and most important the GPS stuff gets updates through the Radio-ROM. I figured this is a widely known fact...
This person has like the best ive seen so far does anyone know where i can get this GPS or something similar, please, i have the titan on the new 3.35 rom so any steps i need to follow, let me know, watch the linked video and youll see wat im saying http://www.youtube.com/watch?v=PDXXYuJSWM4
I don't recognize that exact piece of software, but basically any of the commercial ones will do the 3D view and turn by turn instructions like he had. I personally have used IGO and am currently trying TomTom6
I think I sway more towards IGO for a couple of reasons, but I'm trying to give TomTom a fair swing.
Are these GPS programs cracked or did you have to pay for them, and where would i find them?
some, like google maps, are free, others you have to pay for
There are a couple threads on XDA talking about GPS... I've tried most of them and personally, am happiest with Garmin's XT software. The only downside, is it uses a ton of memory with its latest release and will sometimes only run after a soft reset. I like its features for finding nearby gas stations with current prices, current traffic, weather, hotel rates, etc. If you are in Europe, it also has traffic safety cameras. All of these are included for no extra monthly fee (unlike TomTom).
On the other hand, I absolutely love TomTom for its quick page rendering. As you turn, the screen shows you turning smoothly... Garmin is quite jerky and not nearly as smooth as TomTom.
Both of them can plan a route for you quite nicely - both of them do end up giving me different directions from point a to point b, but neither seem to be horrible. Also - TomTom gives you directions in a couple of seconds. Garmin can take 30 seconds and sometimes up to a minute to calculate your route. Not a deal breaker.
I have heard some good things about iGo, but tried it several months ago and stopped using it for some reason - not sure why. I do remember it was nice because it included text to speech.
Google Maps and MS Live Search are both nice, but you need a continuous internet connection to render the maps. The above mentioned programs have the map stored on your storage card... only times it connects to the internet are for traffic updates, etc...
Good luck!
I myself am currently using Garmin Mobile XT. I've been using it for a while, and I love it. I'm on vacation now in North Carolina, and this thing hasn't skipped a beat for me at all. NONE. So I have no complaints.
I am rather curious to try out the newest distro of Tom Tom software when I can get it, and I wouldn't mind checking out Igo just to Give some feedback. I just haven't gotton around to it.
I have used IGuidance 4 and TomTom Nav 6 and Garmin XT
TomTom 6 is, I think, the best because it behaves itself most of the time. Garmin is a memory hog and IGuidance freaks me out because the different voices for the directions and the text to speech.
I like IGuidance's interface. I think v4 is very easy on the eye and the finger. But TT6 is smoother in 3D rendering, but due to lack of hardware acceleration in the Titan, none of them look particularly smooth compared to older HTC devices, or newer ones with proper graphics acceleration.
In terms of maps accuracy, TT6 seems to have the edge in North America and is far superior in Europe.
In Asia, I revert to MapKing as it is the only software with map coverage of any use. But then the MapKing interface is not up to TT6 or IGuidance level.
I like that IGuidance gives text to speech (i.e. "turn right in 100 meters at Oak Street" as opposed the "turn right in 100 meters") but as I mentioned the different voices freak me out a bit. I know there is a hack to make all the voices the same, but it degrades performance noticeably.
Overall TT6 is the best of the non data (google maps, live search) nav softwares for Europe, USA and Australia. Mapking for Asia.
Of the data services, Nav4All is pretty good for turn by turn directions, and Live Search is probably better than Google Maps for simple routing and mapping.
Just wondering if the Touch HD will get the same laging GPS receiver the Touch Pro and Diamond got? I sure hope not. Its the only thing that dissapoints me with my Touch Pro.
utvol06 said:
Just wondering if the Touch HD will get the same laging GPS receiver the Touch Pro and Diamond got? I sure hope not. Its the only thing that dissapoints me with my Touch Pro.
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It's not an issue of hardware, but software. That's like asking if it will have the same laggy TouchFlo3D because of its processor... It's just the software. My Fuze didn't have any of the complaints of slow TF3D or GPS lag, but it had the same GPS receiver as the European Touch Pro.
Black93300ZX said:
It's not an issue of hardware, but software. That's like asking if it will have the same laggy TouchFlo3D because of its processor... It's just the software. My Fuze didn't have any of the complaints of slow TF3D or GPS lag, but it had the same GPS receiver as the European Touch Pro.
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I think the cause is the hardware, because some people tried with an external gps antenna, sirf3, and no lag at all. And changing software doesn't eliminate the lag. I use iGo and TT and the lag is always there...
onesolo said:
I think the cause is the hardware, because some people tried with an external gps antenna, sirf3, and no lag at all. And changing software doesn't eliminate the lag. I use iGo and TT and the lag is always there...
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Hopefully HTC will be able to fix the GPS Lag in the diamond and Pro with a rom update...they are supposed to be working on it. I just hope the Touch HD wont share the same lag problem and that HTC sees that it doesn't before release.
Isn't the difference between the built-in GPS and an external GPS antenna the method? The built-in GPS is (AGPS) and an GPS antenna uses "normal" GPS....
No, that's not it.
Assisted GPS is something extra for a normal GPS system, not a different system. A basic GPS system will have to download the satellites' position each time it cold-starts, and that will take time. An A-GPS system will have an additional way to download the current position of all GPS satellites, in order to speed up the process, by knowing the position of your phone in a GSM network or by downloading an updated file containing the satellites' current position, through a data network (wifi or 3g). That's why the "gps assistance" files you download through this kind of assistance application (in HTC's case, it's called "Quick GPS") are only valid for 2-3 days: in 2-3 days, they expire and the satellites' positions aren't valid anymore.
All GPS systems must have an antenna of some kind, either internal or external. Mostly all PDAs with integrated GPS have an internal antenna, which does the job in most conditions, but it's not perfect. I used an external antenna for car navigation, and in most situations I went from 4-5 detected satellites (with so-so signal) to 7-8 with full signal, only by having an antenna on the roof of my car. However, this shouldn't influence by all means the GPS lag, only the precision of GPS positioning on the map (coordinates).
That's not it either.
Quick GPS downloads a file prior to GPS initiation. When started the GPS works off-line.
A-GPS is a hybrid technology that auguments the GSM satellite signal with GSM signal on-line.
You can use Quick GPS without A-GPS, which is the case of most users today, for compatibility reasons.
As for the previous question regarding GPS lag, here are two points (depending on what you understand by GPS lag):
1. the GPS chipset has a built-in refresh rate, which should be something like 0.5 seconds. This is the same for all devices sharing the same chipset.
2. when saying that the GPS performance depends on software, it does not mean IGO or TomTom, it means the Radio drivers. Newer Radio versions come up from time to time and may improve GSM / GPS signal strength or battery life, and in the very best cases both.
Follow the ROM Development threads for more info.
dani31 said:
That's not it either.
A-GPS is a hybrid technology that auguments the GSM satellite signal with GSM signal on-line.
You can use Quick GPS without A-GPS, which is the case of most users today, for compatibility reasons.
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Not to be a GPS-nazi but A-GPS doesn't necessarily imply the usage of a GSM network, but the usage of an assistance server. From Assisted GPS page on Wikipedia:
A typical A-GPS-enabled cell phone will use an internet connection to contact the assistance server. Alternatively, it may use standard non-assisted GPS, which is slower and less accurate, but does not lead to network charges for data traffic, which can be considerable.
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So, it can be done either through GSM networks, or through a data connection; therefore, the Quick GPS app is simply another form of A-GPS.
dani31 said:
1. the GPS chipset has a built-in refresh rate, which should be something like 0.5 seconds. This is the same for all devices sharing the same chipset.
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That I don't think would be visible to the end user. According to the NMEA/SiRF specs, the min refresh rate would be 1 Hz (one time per second), but the average among devices seems to be around 5 times a second, once every 200 miliseconds (5 Hz refresh). The GPS chip should do that without a problem (according to the manufacturer's specs), therefore the problem must be somewhere after the GPS data is sent to the device; either in communication to the CPU, either in the navi software. My 2 cents. We'll see.
Review from SlashGear
HTC Touch HD's review by SlashGear talks about the GPS lag..
this is the part about GPS performance of the Device:
"The HTC Touch Diamond has been criticised for its GPS performance, which can lag behind actual position when moving at speed. Hopes were high for the Touch HD to avoid such a fate, but unfortunately that doesn’t appear to be the case. Whether from the processor (the same 528MHz Qualcomm MSM7201A as in the Diamond) or the GPS receiver itself, when driving the indicated position is always 50-80ft behind. This makes navigating via the on-screen directions incredibly difficult. At lower speeds, such as when walking, the Touch HD has no problems, just like the Diamond. We’re still attempting to get hold of some alternative GPS programs, such as TomTom or Garmin Mobile XT, and will update this review when we’ve had an opportunity to try them out."
has anyone else bought the Touch HD yet who can confirm this?
i just hope the GPS lag isn't as bad as the HTC Touch Diamond/Touch Pro as i'm going to order one pretty soon.
For the sake of millions of readers and potential touch HD buyers like me,can someone who already own a touch HD,please be kind enough,do an experiment about this gps lag issue and give an absolute answer to this issue.Gps lag is very noticeble when you are navigating at high speed(eg:80-100km/h) or when doing multiple rapid turns(eg:driving on back alleys).at low speed(slow drive or walking),no lag is apparent.Currently i'm using ipaq 612c where it has this lag issue and its most noticeble when using Garmin XT.When using mapking or tom tom it is not that bad..Really waiting for all your answers.
Thanks in advance for all your help
iznee said:
For the sake of millions of readers and potential touch HD buyers like me,can someone who already own a touch HD,please be kind enough,do an experiment about this gps lag issue and give an absolute answer to this issue.Gps lag is very noticeble when you are navigating at high speed(eg:80-100km/h) or when doing multiple rapid turns(eg:driving on back alleys).at low speed(slow drive or walking),no lag is apparent.Currently i'm using ipaq 612c where it has this lag issue and its most noticeble when using Garmin XT.When using mapking or tom tom it is not that bad..Really waiting for all your answers.
Thanks in advance for all your help
Click to expand...
Click to collapse
Ok, I have performed an experiment. Hopefully it will help you and "millions" of readers to decide if GPS lag is a problem or not on this device.
Test setup:
PDA 1: Mitac Mio A701, GPS chip: SIRF III, navigation software: IGO8
PDA 2: HTC Touch HD, GPS chip: Qualcomm, navigation software: IGO8
Experiment:
I start IGO8 on both devices and select the same destination. They both pick up GPS signal and the show starts..
Result:
PDA 1: depending on your speed, there is a GPS lag. This is between 0-2 seconds. In distance I would say about 20 to 50 meters. Again, all depending on your speed. When you stop (which unfortunatelly happens a lot in the netherlands due to high traffic ) the GPS gives the right position.
PDA 2: see PDA 1. There is practically no difference. Sometimes PDA 1 is more ahead, sometimes PDA 2 wins. The voice commands start virtually at the same time "take a turn left", "leave the highway" and so on. Maybe PDA 2 is a bit faster (less GPS lag) since I heard the voice like a 10th of a second earlier than on PDA 1.
Conclusion:
GPS lag is a problem that practically all "cheap" GPS devices have, specially in a moving vehicle. Since your GPS data is refreshed every second, you would be one second off every time. Moving at 100km/h, that means an offset of 27 meters. Moving at 150km/h that is about 41 meters (and yes, I know I should not drive that fast in the netherlands ). Add to that the GPS errors and you will get an impression on how hard it can be to predict where you will be in a second.
You could then say that the navigational software should take that into account and predict where it would be, but that also has a negative side. Have you noticed what happens when you do not follow the course laid ahead by the navigational software? it stays on course for a couple of seconds and then it notices you actually turned left or right, thus the direction should change.
The more aggresive the prediction is, the more you will have a problem when deviating. The less prediction, the more GPS lag you will have.
Is this a problem while driving? I have never considered it a problem. On the highway you do not decide to take a turn within 50 meters (I hope ). In the city, you should have way less problems with GPS lag...
Last, for all the "millions" of readers, please read these two articles:
Article 1, an abstract about navigational state estimator
Article 2, a forum discussing this very problem in the i-Blue receiver. Pay special attention to the answers given by JakeRich
I hope this helps you all out...
David,
I am so very pleased you had these two devices with the software mentioned.
It just so happens that I too have a Mio A701 with iGo and my next purchase will be the Touch HD.
Your test served as a good starting block for me to build upon.
I did wonder how well the Touch HD would fare against my A701.
Many thanks.
Beards
Thanks for your test. What about TMC info with iGo8 ?
gergy said:
Thanks for your test. What about TMC info with iGo8 ?
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Click to collapse
The device finds the TMC receiver (using 8.0.x version, 8.3.x version does not find anything) but then it does not find a channel. This would need a TMC expert to work out...maybe you need to change something in the sys.txt file of IGO8
Something I would add is that until last week I was using a SirfStarIII equipped BT GPS receiver linked to my Hermes and running TTN 6.03, now I'm using the Touch HD internal GPS and TTN 7.45. I have found that the GPS signal appears to be significantly weaker on the Touch TD. However, it does have the capability to pick up more satellites it seems.
In my standard journey between home and work the BT GPS receiver never picked up more than 8 satellites but never picked up less than 4 and spent most time tracking 5-6. The Touch HD at times picks up 10, maybe even 11(!), satellites but often drops to 2 and spends most time tracking 3-5.
Impression
I'm using Tomtom 7,451 now on my HD.
I tried it with the internal GPs and even with an external bleutoth GPS receiver from Tomtom itself.
The so called lag is the same in both cases.It is caused by the slow refreshing rate ( almost 1 second ).That is not a major problem and is the same that I experienced already with the Polaris,Cruise and Diamond.
So when driving try to think at least 1 second ahead.
When you're not moving I got a pefect lock on my position with Tomtom but with Googlemaps i'm of by almost 150 meter to the East.
So that's software I think.
BerreZ said:
I'm using Tomtom 7,451 now on my HD.
I tried it with the internal GPs and even with an external bleutoth GPS receiver from Tomtom itself.
The so called lag is the same in both cases.It is caused by the slow refreshing rate ( almost 1 second ).That is not a major problem and is the same that I experienced already with the Polaris,Cruise and Diamond.
So when driving try to think at least 1 second ahead.
When you're not moving I got a pefect lock on my position with Tomtom but with Googlemaps i'm of by almost 150 meter to the East.
So that's software I think.
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I get my touch hd today. looks like I wont be installing Google maps at all on it. I'm going to buy Co-Pilot 7 when I get the chance. I also like Windows Live search GPS app, but it may lag like google.
utvol06 said:
I get my touch hd today. looks like I wont be installing Google maps at all on it. I'm going to buy Co-Pilot 7 when I get the chance. I also like Windows Live search GPS app, but it may lag like google.
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Google maps is already preinstalled, at least on my Touch HD it was (Netherlands)
last word on gpslag?
Hi to All,
Personally, i start realizing the limitation of forums in producing real information.
First of all, most "commercial" and consumer GPS update their position every second, as correctly pointed out in this forum. Said this, faster position updates are possible for professional devices, see
http://www.dsprelated.com/showmessage/22833/1.php
but we can probably forget about it for the time being.
so, don't be surprised if - driving at 100 km per hour alias 30 m/s - you will miss the exit by 30 meters. Be reassured: Felipe Massa will miss the box by 100m if he would drive by looking to the GPS - and your braking distance was anyway 60 m....aaaghh....i hope i will never meet any of you while making the test.
My firm and conclusive opinion after extensive evaluation with Igo and Tomtom and gwatch:
The GPS LAG on the touch HD is a metropolitan legend invented by i-members!
If you check on igo8, there is a small dot representing the actual position, and the arrow or the car is the position compute by software interpolation/filtering etc. Everybody can notice that the dot moves instantaneously. It is a matter of software to decide how to filter this data, and how "reactive" you want the position change to happen. On top of this, it is obvious that updating a VGA or WVGA screen will be heavier than updating a small screen, so there should be a lag which is dependent on the navigation software you use and on the load on your telephone.
However, there is definitely no lag on tomtom....the problem is: how to buy version 7?
Here is video comparison omnia vs hd
It seems to me there is little lag on hd.
Colud somebody translate it?
http://www.youtube.com/watch?v=v45--rkRgjk