Comments on: GPS is too slow for a lot of location based services. http://www.saunderslog.com/2008/06/11/gps-is-too-slow-for-a-low-of-location-based-services/?utm_source=rss&utm_medium=rss&utm_campaign=gps-is-too-slow-for-a-low-of-location-based-services An outcome-driven leader, proven technology product developer, and marketer with over 20 years of hands-on experience including start-up, small and large business environments, and the board room. This is my blog. Thu, 26 Jan 2012 17:15:58 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: Kai Collins http://www.saunderslog.com/2008/06/11/gps-is-too-slow-for-a-low-of-location-based-services/#comment-6892 Kai Collins Thu, 27 May 2010 20:26:43 +0000 http://saunderslog.com/?p=4122#comment-6892 GPS is very useful specially the ones that are put on the Car dashboard. it can really help you drive on unfamiliar places.-*~ GPS is very useful specially the ones that are put on the Car dashboard. it can really help you drive on unfamiliar places.-*~

]]> By: GPS Navigationssyste http://www.saunderslog.com/2008/06/11/gps-is-too-slow-for-a-low-of-location-based-services/#comment-6891 GPS Navigationssyste Thu, 28 Jan 2010 20:59:06 +0000 http://saunderslog.com/?p=4122#comment-6891 Garmin sells an excellent devices regarding the hard and firmware. They have a better quality products and more user friendly. Garmin sells an excellent devices regarding the hard and firmware. They have a better quality products and more user friendly.

]]> By: gps vehicle tracking http://www.saunderslog.com/2008/06/11/gps-is-too-slow-for-a-low-of-location-based-services/#comment-6890 gps vehicle tracking Tue, 27 Oct 2009 11:01:00 +0000 http://saunderslog.com/?p=4122#comment-6890 Excellent site and educational posts, Could I ask if GSM or GPS trackers are best? Excellent site and educational posts, Could I ask if GSM or GPS trackers are best?

]]> By: Jim Courtney http://www.saunderslog.com/2008/06/11/gps-is-too-slow-for-a-low-of-location-based-services/#comment-6889 Jim Courtney Fri, 13 Jun 2008 22:23:18 +0000 http://saunderslog.com/?p=4122#comment-6889 My experience with the most recent version of Google Maps on a Blacbkerry 8820 or a Nokia N95, both of which have A-GPS (A=assisted by cell tower) is that it locates the nearest cell tower quite quickly and after a few minutes will narrow in once it has the satellites alignment. It is the nature of GPS receiver chips to take a bit of time to get going once turned on. Once they have a location they are quire useful even to tell you the speed at which you are traveling as well as direction changes, etc. My experience with the most recent version of Google Maps on a Blacbkerry 8820 or a Nokia N95, both of which have A-GPS (A=assisted by cell tower) is that it locates the nearest cell tower quite quickly and after a few minutes will narrow in once it has the satellites alignment. It is the nature of GPS receiver chips to take a bit of time to get going once turned on. Once they have a location they are quire useful even to tell you the speed at which you are traveling as well as direction changes, etc.

]]> By: Jim Courtney http://www.saunderslog.com/2008/06/11/gps-is-too-slow-for-a-low-of-location-based-services/#comment-6888 Jim Courtney Fri, 13 Jun 2008 22:22:27 +0000 http://saunderslog.com/?p=4122#comment-6888 My experience with the most recent version of Google Maps on a Blacbkerry 8820 or a Nokia N95, which has A-GPS (A=assisted by cell tower) is that it locates the nearest cell tower quite quickly and after a few minutes will narrow in once it has the satellites alignment. It is the nature of GPS receiver chips to take a bit of time to get going once turned on. Once they have a location they are quire useful even to tell you the speed at which you are traveling as well as direction changes, etc. My experience with the most recent version of Google Maps on a Blacbkerry 8820 or a Nokia N95, which has A-GPS (A=assisted by cell tower) is that it locates the nearest cell tower quite quickly and after a few minutes will narrow in once it has the satellites alignment. It is the nature of GPS receiver chips to take a bit of time to get going once turned on. Once they have a location they are quire useful even to tell you the speed at which you are traveling as well as direction changes, etc.

]]> By: Brad Templeton http://www.saunderslog.com/2008/06/11/gps-is-too-slow-for-a-low-of-location-based-services/#comment-6887 Brad Templeton Wed, 11 Jun 2008 22:47:23 +0000 http://saunderslog.com/?p=4122#comment-6887 I am not sure you have to upgrade towers too much to make it fast. There are some aGPS phones that already do this. The trick is, for a GPS to get a fix, it needs an up to date ephemeris for the satellites. These last only 4 hours so you need to constantly update them. Which you can do from the satellites but first you have to find them and wait for them to send it etc. If you can pick up your ephemeris and almanac over the cellular network, you can dig right in to decoding signals from satellites. And you don't need as strong a signal. In addition, local towers can tell you the current locally induced error for your area, letting you be very accurate. I am not sure you have to upgrade towers too much to make it fast. There are some aGPS phones that already do this.

The trick is, for a GPS to get a fix, it needs an up to date ephemeris for the satellites. These last only 4 hours so you need to constantly update them. Which you can do from the satellites but first you have to find them and wait for them to send it etc. If you can pick up your ephemeris and almanac over the cellular network, you can dig right in to decoding signals from satellites. And you don't need as strong a signal.

In addition, local towers can tell you the current locally induced error for your area, letting you be very accurate.

]]> By: Alec http://www.saunderslog.com/2008/06/11/gps-is-too-slow-for-a-low-of-location-based-services/#comment-6886 Alec Wed, 11 Jun 2008 14:52:46 +0000 http://saunderslog.com/?p=4122#comment-6886 That's interesting information Brad and Matt. So it's *simply* a matter of convincing carriers to upgrade towers? That's interesting information Brad and Matt. So it's *simply* a matter of convincing carriers to upgrade towers?

]]> By: matt roberts http://www.saunderslog.com/2008/06/11/gps-is-too-slow-for-a-low-of-location-based-services/#comment-6885 matt roberts Wed, 11 Jun 2008 14:10:13 +0000 http://saunderslog.com/?p=4122#comment-6885 Brad, Similar technology was developed in Canada by a company called Cell-Loc which did both triangulation from the cell towers to give location to both carriers for asset tracking and down to the phone for assisted GPS mobile acquisition. From what i gather it never really caught on. mr Brad,

Similar technology was developed in Canada by a company called Cell-Loc which did both triangulation from the cell towers to give location to both carriers for asset tracking and down to the phone for assisted GPS mobile acquisition. From what i gather it never really caught on.

mr

]]> By: Brad Templeton http://www.saunderslog.com/2008/06/11/gps-is-too-slow-for-a-low-of-location-based-services/#comment-6884 Brad Templeton Wed, 11 Jun 2008 13:57:41 +0000 http://saunderslog.com/?p=4122#comment-6884 Actually, it should be possible to make a very fast GPS if you already know the approximate location from the cell towers. Perhaps even faster if the cell towers were to tell you which GPS satellites are the ones to listen for at this moment. And super-duper accurate to a foot if the cell towers were to also tell you clock corrections for the local area. Actually, it should be possible to make a very fast GPS if you already know the approximate location from the cell towers. Perhaps even faster if the cell towers were to tell you which GPS satellites are the ones to listen for at this moment. And super-duper accurate to a foot if the cell towers were to also tell you clock corrections for the local area.

]]> By: Pej Roshan http://www.saunderslog.com/2008/06/11/gps-is-too-slow-for-a-low-of-location-based-services/#comment-6883 Pej Roshan Wed, 11 Jun 2008 12:45:23 +0000 http://saunderslog.com/?p=4122#comment-6883 Hi Alec- I agree. Our company, Agito Networks, uses location as a metric for handing over mobile calls between WiFi and cellular. We evaluated a number of techniques to determine location, including GPS, and found the fastest means was via WiFi and cellular measurements. Along the lines of your notion of progressive location, we agree. There is likely no silver bullet for location, rather combined metrics. Here is a video blog post we did a few months ago on the topic <a href="http://www.agitonetworks.com/blog/?p=16" rel="nofollow">http://www.agitonetworks.com/blog/?p=16</a> Pej Hi Alec-

I agree. Our company, Agito Networks, uses location as a metric for handing over mobile calls between WiFi and cellular. We evaluated a number of techniques to determine location, including GPS, and found the fastest means was via WiFi and cellular measurements. Along the lines of your notion of progressive location, we agree. There is likely no silver bullet for location, rather combined metrics.

Here is a video blog post we did a few months ago on the topic
http://www.agitonetworks.com/blog/?p=16

Pej

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