Ok 6 days ago, I lost my phone on a night out google latitde has pinpointed 5 days ago where my last location was known and is 5 - 10 mins away from the location i went.
I have an address from google latitude, not sure how accurate this is?
i hope its accurate ill be knocking on their door for my phone back, haha
thanks
Was the GPS enabled on your phone? If so (in my experience) you should have an accuracy anywhere from 5 to 2 meters. If not then your location must be being determined by a more course method like WiFi or radio towers. If its WiFi i would guess its getting its geo-loction data from the WiFi it should be pretty accurate.
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I would like to know if anyone has any experience with the quality of the gps reception inside a bakcpack.
I would like to log a trail for about 3 hours. And keeping the HD2 in hand for 3 hours could be a bad idea. I would like to place the HD2 inside a backpack of course as closest to the outside as possible. Is there any chance of still getting any acceptable gps reception to log my trail?
I tried that in a small test. I placed the phone in the pocket of my jeans and logged a small distance. But the trail was a little bit misplaced. Drawed over the google maps map my track was not exactly on the street I walked.
Anyone tried that?
If I can get a lock in my house (bottom floor) then there's a good chance in your back pack, only one way to find out for sure, have a quick walk round your block with your back pack on....
I'd be more worried that the battery will lasts 3 hours..
battery should be no problem, I have an external battery pack (Just Mobile Gum Plus). I just want to make sure that this measurement will work. I have only one try. So I need some tips/hints to maximize the gps reception...
does no one have any experiences in loging trails with this phone?
Should work ok! (Use it in my pocket)
However, you say you have an external battery. This means the device is always getting charged, which could increase the temperature of the battery. So, if you want to keep the device running, you should ensure this heat is removed from it (so, don't put it in your sleeping bag...)
I have used HD2 on long hiking trips and have logged my trails with no problems. Your GPS will get great reception in the outdoors, much better than in cities. A backpack will not affect the GPS signal at all unless you've got it lined with metal!
Well just tried the backpack thing while going to the supermarket. But the result was quite unsatisfying. The gps signal got lost. THe second try was my jeans pocket. Worked neither.
Where did you exactely put your phone in the backpack and in what direction was it faced?
Ok thanks for all the answers. I found the solution for my problem.
I used Navicomputer in combination with S2U2. As soon as I hit the power button of my HD2 (forced standby) the GPS reception was lost. Even with the option ind NaviComputer set prevent standby.
But if I just let the phone switch to standby (leave it unattended) it worked.
Can someone explain that to me?
GPS reception in the backpack was good enough...measurement over 2h worked.
The battery lasted more than 3h of gps tracking without any external power.
Glad to hear you got it working. The GPS probably turns off automatically in standby to save power in the same way that your WiFi connection will automatically disconnect if you leave the phone in standby for long enough. Hope you had a good hike!
Does it crash the Vibrant when using Navigation? Wondering since I haven't gone out to test it myself. Reported Accuracy is also slightly better from what I can tell, shows 7-8 meters in my house (although it's much closer/next to or directly on my house most of the time). Before it would only show 10 meters regardless.
Running AOSP ish rom and applied the latest GPS fix (can't remember exactly which one).
So I have been running this rom for a long time, like since it was released. The only issue was the gps was still crappy. I did the hardware fix but that didn't help. About 2 months ago I saw a new fix which involved changing the info in the gps settings page. Anyway, gps is fast to lock (like 5 seconds) and is accurate now.
Around the same time I did the gps fix, I noticed I started having worse battery life. I hardly use my phone during the day and some days don't make a call or use gps, internet (other auto email notifications) etc but I notice my battery is down to 10-20% at the end of the day, approx 10 hours after taking it off charge. This is while at work with no wifi connected and no way the gps could get a lock.
Now if I am off, going from place to place in my car (connected to my bluetooth head unit) and when at home the phone sitting on a table, connected to wifi and with a reasonable ability to get a gps lock, my battery is still 80-90% charged at the end of the day.
What could be causing this? I have thought that when at work I have a worse signal and that the momentary loss of signal and the searching for a signal may cause this. How about the fact that it isn't connected to wifi but there are a couple available?
Thanks for any info.
Considering buying an ATRIX but I need good GPS, whats locking speed and accuracy like and is it fast even with Data connection off?
I consider it great....but I always have connection on....
Enviado desde mi MB860 usando Tapatalk
Not sure about with data off, but in regular use its great, and is one of the main reasons I switched from the iPhone. It also seems to calculate real time traffic into your ETA.
Sent from my MB860 using XDA App
keep mobile data off 85% of the time. almost never use the gps. connects within seconds indoors without downloading data. ive had a g1, droid, and acer iconia tab. this blows them away gps wise.
I was shocked at how fast it connected and started navigating. Last week I tried my g/f's inspire. Took like over 5 mins to lock. My Atrix takes seconds.
The Atrix has a fantastic gps. Even better than my son's low-end Garmin. I used it for a 600-mile trip to Spokane and it never missed a beat. I loaded my route before leaving, and it cached all the maps. Hence, it worked well even in areas without data service. I was so impressed that I bought the car dock when I arrived in Spokane just to have better access to the gps features in the car.
Best GPS on any phone. I have ever used.
mobileweasel said:
Best GPS on any phone. I have ever used.
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same here. but i used to own a galaxy s so really anything is an improvement. locking is super fast & accurate - perfect for all of those golf apps.
The Balvenie said:
same here. but i used to own a galaxy s so really anything is an improvement. locking is super fast & accurate - perfect for all of those golf apps.
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Rofl seriously my captivate gps would have me driving a mile away through houses, driving in one direction while pointing in another direction, and tell me I was accurate to 30m all at the same time. Atrix gps is awesome.
Sent from my MB860 using Tapatalk
Agreed, i'm very happy with the gps. It didnt occur to me to test without data before but i just tried it.
I went into airplane mode, went into Gps Test app and turned gps on. It immediately located the first satellite and others, and ~6-7 seconds later it had full lock. This is from my 3rd floor office of a 4 floor building.
Sent from my MB860 using XDA Premium App
GPS is awesome on these phones. I don't know about with the data off though, you have to get maps from somewhere. With Google maps, you can set it to cache your route and that helps if you're in poor service areas. I use mine almost everyday, and all day long, it never misses a step.
I came from the Captivate and I can tell you it's excellent. I get an approximate location within 2-3 seconds, and an accurate location within about 7-8 seconds. And by accurate within 5 feet or about 1.5M. I was surprised how fast and accurate the GPS was on my phone. This was while indoors, I'm sure if you went outside you could lock on a few seconds faster.
I think you have your answer OP.
Keep in mind Google Maps will use the cell towers to get location. Google will even work if you disable the GSP. I use Navigon. I like having the maps on my phone just in case. I also use BackCountry Navigator. Both these programs will only use the GPS. The Atrix GPS is great. I has always lock in 10 12 seconds or less. If you use GPS Status to download the A-GPS XTRA Data, it will lock in 1 to 3 seconds. The Atrix GPS seems to be very accurate also.
I found it to be awesome on froyo and real iffy on gingerbread.
I don't use GPS but with all the talk going on about GPS I thought I would try that GPS test program on my Transformer Prime. Is the attached picture a good response? I'm not sure what SNR means but it appears to have picked up quite a few sats.
For a Prime its pretty good as many people including myself get nothing.
SNR means signal to noise ratio. Which is an indicator for signal quality. In comparison to other devices the SNR is not so good.
texstar said:
I don't use GPS but with all the talk going on about GPS I thought I would try that GPS test program on my Transformer Prime. Is the attached picture a good response? I'm not sure what SNR means but it appears to have picked up quite a few sats.
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That's average, mine is also like this, but it won't ever locate you any closer than that and if you move you lose signal.
Compared to my Galaxy Note...
I got zero's across the board on my prime...for sh*ts and giggles, I decided to compare to my galaxy note.
Note with GPS only accuracy down to about 225-250 feet, SNR on 12-14 satellites ranged from 18-27 or so...
When I add sensors to the mix, accuracy goes to 45 feet... (about same SNR)...
All and all I am continually amazed at the galaxy note... (gps on prime is nice to have for me... my car has nav and clearly the galaxy can do it!)
It seems for a "premium" tablet, they'd have put forth premium components and subsystems like GPS...
on the plus(and unrelated) my wifi has been solid...which is key for me...
Interpreting YOUR numbers
Here is what your pic is telling you:
GPS Status: Green - You have a lock...Your "location (car)" will track you as you move.
Yellow - GPS is active, but you do not have GPS lock and is still searching for satellites
Red - GPS is inactive
Accuracy - 36 ft isn't bad...GPS alone (without AGPS) is going to be about 30 ft. AGPS will improve that number. I have seen numbers as low as 6-10 ft. This also depends on where the "active" sats are...If they are low (at the horizon), the accuracy won't be as good....If your sat's are at about 45 degrees in the sky will give the best reading. As the accuracy gets worse, as you're moving, the map indicator may show you traveling in a median, field, thru houses, etc - so although it shows you, your actual location is off.
Chart - Satellites with SNR below 20 most likely will not lock. Depending on the system (I don't know this one well enough yet) it takes 3-4 above 20 to get a lock (some systems require 5-6 sats)....When most numbers are in the very low 20's, although you have lock....you probably will lose lock at times during your trip....how long is loses lock will vary and depends on when it can pick up some higher numbers...Sometimes, it's only seconds, sometimes it's minutes...when it happens, you won't be tracked. The numbers at the very bottom are the satellite numbers....There are about 32-36 active satellites floating around in space...being able to see 13 means you are seeing pretty much the maximum number available at your location.
Hope this helps your understanding.
Bob
To possibly improve an already decent reading, I'd try the mods found in these 2 threads:
http://forum.xda-developers.com/showthread.php?t=1520642
and
http://forum.xda-developers.com/showthread.php?t=1533776