Hello ; I am currently developing an application in Java for Android; it is a project of the year! Currently I just integrate Google maps services; but can not use the function to locate the position of the device. I wait for someone to answer me qualified to talk about code. Thank you
Envoyé de mon SM-G928F en utilisant Tapatalk
The GPS receiver gets a signal from each GPS satellite. The satellites transmit the exact time the signals are sent. By subtracting the time the signal was transmitted from the time it was received, the GPS can tell how far it is from each satellite. The GPS receiver also knows the exact position in the sky of the satellites, at the moment they sent their signals. So given the travel time of the GPS signals from three satellites and their exact position in the sky, the GPS receiver can determine your position in three dimensions - east, north and altitude.
There is a complication. To calculate the time the GPS signals took to arrive, the GPS receiver needs to know the time very accurately. The GPS satellites have atomic clocks that keep very precise time, but it's not feasible to equip a GPS receiver with an atomic clock. However, if the GPS receiver uses the signal from a fourth satellite it can solve an equation that lets it determine the exact time, without needing an atomic clock.
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I am curious to know as I use my pda for the main purpuse of road navigation but would like to know if also I can access the internet through the gps receiver.
Sorry but that cannot be done, the gps receiver is a receiver only unless its bluetooth in which case it receives the gps signals and transmits them over bluetooth to the phone/pda, it has no capability of satellite communication for internet.
if the gps satelite had access to the internet and would send data and the gsp module had support for recieving data i guess it could be don
but since gps was invented by the us army and they still use it i doubt they would add too much internet support in that system
also it would be a bad thing for all people who were using gps when the whole system would crawl to a halt when little timmy were downloading powerranger mpg's
It couldn't work, how would the satellite receive the page request? To do this, the GPS module would have to be a transceiver...which it isn't.
I guess for this to be possible, you need a satellite chip like in a sat. phone....I wonder if anyone will produce one to go in a CF slot anytime soon? Would be pretty cool!
Ben
A GPS Receiver mainly receives clocking signals from different sattellites and calculates your position based on the timedrift between the different clock feeds.
These clockfeeds are actually broadcasted on a singal transponder and single channel for each sattellite... in other words, everyone receives the same stream... so no luck there
Regardless of that fact, a GPS receiver is usually pretty dump and doesnt have the brain to maintain Layer 2 (let alone 3) cohesion for a data stream.
Anyways... my 2c
Hi, I've got TomTom Navigator 6 installed on my Trinity and it all works fine, except it takes about 5 minutes before it picks up any satellites when I run it - does anybody know if there's a fix to enable to gps chip to pick up satellites a bit quicker than this? Even when I'm outside and away from tall buildings it's the same. Any help or suggestions would be great.
Thanks
Seagee
Did u try that software?
keep QuickGPS updated.
tjw2007 said:
Hi, I've got TomTom Navigator 6 installed on my Trinity and it all works fine, except it takes about 5 minutes before it picks up any satellites when I run it - does anybody know if there's a fix to enable to gps chip to pick up satellites a bit quicker than this? Even when I'm outside and away from tall buildings it's the same. Any help or suggestions would be great.
Thanks
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it will save a couple of minutes
aquiring a satellite regardless of whether you're using an internal gps antenna or an external bluetooth antenna usually takes a few minutes when you are booting it cold (ie.. turning it on initally) There really isnt any way around this that I know
Aaron McCarthy said:
gps antenna or an external bluetooth antenna
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Try your GPS antenna with an other software or with a GPS diagnostic.
I am 99% sure your GPS antenna does not work properly or at least try your tom tom with an other antenna.
Info : GPS antenna have to connect with 3 or more satellite to determine the position.
Just wondering... when I go camping far up north, there's no reception on my HTC TyTN. But, using a bluetooth GPS receiver I'm able to navigate with my TOMTOM or Google Maps. Now just wondering... since there's GPS reception, any way to use this GPS reception for phone calls? Somehow? There are GPS phones out there right? So what about making this work?
By GPS, I guess I meant Satellite.
satellite phones use different satellites than GPS units.
so...no.
Any way to connect to phone satellites with bluetooth receivers?
Hi - no you would need a completley separate phone to do this. As far as I remember calls are quite expensive.
ThaiM said:
Just wondering... when I go camping far up north, there's no reception on my HTC TyTN. But, using a bluetooth GPS receiver I'm able to navigate with my TOMTOM or Google Maps. Now just wondering... since there's GPS reception, any way to use this GPS reception for phone calls? Somehow? There are GPS phones out there right? So what about making this work?
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Just an FYI. Your GPS receiver can only receive signals from the satellites. It can't send them to the satellite, so no two way communication would be possible even if they used the right satellites.
holmanm said:
Just an FYI. Your GPS receiver can only receive signals from the satellites. It can send them to the satellite, so no two way communication would be possible even if they used the right satellites.
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You probably meant that "it can't send them".
Apologies if this has been asked before, but I have a Android joying headunit and having an issue in regards to satnav. Now I use Google maps and I can set a destination and the app knows my current location but once I'm driving the satnav app doesn't update my location (it still registers me at the initial starting location).
At first I thought could it be a GPS issue, but GPS always seems to know my current location once I start any app that needs my location, the problem only happens once I'm on the move it doesn't update it on the app. So baffled whether its a GPS issue or app issue?
Has anyone had a similar issue or know if a possible resolve?
1-) how many satellites do you see ?
2-) how much takes to the gps to make the "fix position" and with how many satellites ?
If you don't know the answers to the questions, let's do in another mode.
Head Unit connected to the internet (wifi)-> Google Play Store -> apk GPS TEST (download and install)-put in on the gps antenna of the device;
Now open GPS TEST->Settings->AGPS-> "clear and update".
RESTART the hu( not closed and open, RESTART), open GPS TEST and wait; first you'll see 2-3 satellites, but slowly the increase till 20-25 and do the "fix position" with 10-12 satellites.
This operation take about 10-15 minutes, after your radio "catch" the satellitesin 10 seconds.
@nick1964 Thats not the issue, the issue he's describing is totally different. The unit will catch GPS signals and navigation works totally fine with other third party apps (iGo, Sygic, Navigon, etc), but Google Maps has an issue where it will catch your location initially, but once you start navigating it will not update the location in the app. If you switch over to another GPS app or even check the GPS in the SYU settings app, it has full lock. So your troubleshooting steps dont really apply in this case. It's happened to me too, it just randomly started working after some days. I don't mainly use Google Maps so I can't really tell what fixed it.
gamer765 said:
@nick1964 The unit will catch GPS signals and navigation works totally fine with other third party apps (iGo, Sygic, Navigon, etc), but Google Maps has an issue.
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@gamer765 I have only tested with Google maps, I'll give iGo a try shortly.
If he didn't know what level of satellites signal have, how many satellites see, how do you talk about "that is not an issue"?
Do you know what is GSM triangulation?
Do you understand what is navigation offline and online?
Do you know what is AGPS data and for what is used ?
Hi all I have an update, it seems to be the GPS thats the issue (NOT the apps that use GPS).
Initially I thought it was the GPS only worked at the initial moment when using a app that uses GPS to get my location, but at all the times this happened I was connected using my mobile phones data connection for Internet. I checked the GPS info and its says "no signal" (but the GPS is 100% connected to the headunit, please see attached photo).
Any ideas anyone?
I have this same problem in my new Joying Android 10 HU as well.
Hi, what is the influence and functionality of the compass when using Google Maps or Waze?
If it is important for navigation within the city, why do some devices not come with a compass?
because the GPS module installed on the phone is pairing with several GPS satellites and you get the positioning
the compass is embedded on the GPS functionality
Thanks for the info