I just caught your post (although I wish I had seen it Thurs). GCM has just put 4 load balanced servers online (up from 1 server) last week and appear to have the new-server-issue stuff worked out. We (Blue-Cove) use other private servers for data-only as well, and the systems are separate and so double-redundant. The radio data you hear actually comes from the same IDOT system (there are multiple entry points); the lone WWW server was just not up to it.
The original uic.edu URL posted actually uses different algorithms to calculate congestion than the new servers.
All CDMA phones in the last couple of years' generations have had GPS chipsets from Qualcomm, you can't get CDMA chips without it. The carriers OTOH, are waffling trying to figure out how to make money. All current CDMA phones must communicate with a SnapTrac server to using MS-assisted or MS-based; the carriers are not leaping to install these servers in their systems.
We're authoring a Brew/Linux/PHP LBS system for a carrier, the first nationwide launch is still months away.
You can download the location of ~all cell towers from the FCC
http://wireless.fcc.gov/geographic/fcc_db.html
(big files) as they are publically licensed, but you can't know the carrier's private ID # of the tower without matching the tower's license to what you phone tells you, as some do.
The first test launch of a stand-alone GPS phone is several quarters away... The CDMA chips are basically capable, but need some extra hardware and firmware since they don't get a kick-start from the tower/server communication.
Right now, if your carrier doesn't have the PUBLIC servers installed (they will not use their e-911 servers for commercial use for liability reasons) then you can't have GPS.
And BTW, the carrier's servers do know your location because of the MS-* handshaking and communication (which allows the ephemeris calculations to be done faster on your phone), it's a question of whether it gets saved or tapped.
Our company (Blue Cove) is currently testing GPS apps with with major carriers, one of which will be enabling commercial Brew applications to use the Snaptrack (Qualcomm) servers that provide the MS-based and MS-assisted capabilities in the next few quarters across the US. For obvious reasons they don't want apps and the public to use the same physical servers as E-911.
All Qualcomm CDMA chipsets now have GPS functionality. You should be seeing traffic, POI, mapping and all sorts of geo-games this year.
http://qeradiant.com I've modelled an entire 20,000 sf office building with it with realistic reasults. The interface is nice and quick to learn. Plus, you can chase your freinds around in it. A teenager modelled his school and also did a Quake mod without weapons for it.
Contrary to the site of infosplit.com...
I did geolocation over 3 years ago using RIPE,ARIN, traceroute and gethostbyaddress() with domain and Agent parsing (in Perl) to distribute home pages. It's because of these actions (and mail spam) that ARIN stopped publicly posting it's database. Like anything else, if you are providing a wanted service (by users that is), then it's a good thing. The rest is spam. I also displayed local weather info for people as they hit the home page (I wish Intelicast would try). As for accuracy, known proxy services can be filtered out, as they tend to be big, fewer in nuber, and well known.
I think that the expanded domain space is going to be a big data problem, especially for smaller outfits.
Slashdot Mirror
I just caught your post (although I wish I had seen it Thurs). GCM has just put 4 load balanced servers online (up from 1 server) last week and appear to have the new-server-issue stuff worked out. We (Blue-Cove) use other private servers for data-only as well, and the systems are separate and so double-redundant. The radio data you hear actually comes from the same IDOT system (there are multiple entry points); the lone WWW server was just not up to it.
The original uic.edu URL posted actually uses different algorithms to calculate congestion than the new servers.
rjs at blue-cove dot com
You can download the location of ~all cell towers from the FCC
http://wireless.fcc.gov/geographic/fcc_db.html
(big files) as they are publically licensed, but you can't know the carrier's private ID # of the tower without matching the tower's license to what you phone tells you, as some do.
The first test launch of a stand-alone GPS phone is several quarters away... The CDMA chips are basically capable, but need some extra hardware and firmware since they don't get a kick-start from the tower/server communication.
Right now, if your carrier doesn't have the PUBLIC servers installed (they will not use their e-911 servers for commercial use for liability reasons) then you can't have GPS.
And BTW, the carrier's servers do know your location because of the MS-* handshaking and communication (which allows the ephemeris calculations to be done faster on your phone), it's a question of whether it gets saved or tapped.
It's---a-small-world-after----all---...
Our company (Blue Cove) is currently testing GPS apps with with major carriers, one of which will be enabling commercial Brew applications to use the Snaptrack (Qualcomm) servers that provide the MS-based and MS-assisted capabilities in the next few quarters across the US. For obvious reasons they don't want apps and the public to use the same physical servers as E-911.
All Qualcomm CDMA chipsets now have GPS functionality. You should be seeing traffic, POI, mapping and all sorts of geo-games this year.
NASA's main software page:
http://asds.stsci.edu/packages.html
QCUIAG has links to some excellent software, some free, some not:
http://www.qcuiag.co.uk
http://groups.yahoo.com/group/QCUIAG
A new method used by STSI and others:
http://www.pixon.com/brochure.html
A HUGE collection of links:
http://www.r-clarke.org.uk/astrosoft1.htm
My own astro pages 8^)
http://rjs.org/astro
http://qeradiant.com
I've modelled an entire 20,000 sf office building with it with realistic reasults.
The interface is nice and quick to learn.
Plus, you can chase your freinds around in it.
A teenager modelled his school and also did a Quake mod without weapons for it.
Wow!
Now I have somewhere to put that 100-200/day I always get but never know what to do with...
Contrary to the site of infosplit.com...
I did geolocation over 3 years ago using RIPE,ARIN, traceroute and gethostbyaddress() with domain and Agent parsing (in Perl) to distribute home pages. It's because of these actions (and mail spam) that ARIN stopped publicly posting it's database. Like anything else, if you are providing a wanted service (by users that is), then it's a good thing. The rest is spam. I also displayed local weather info for people as they hit the home page (I wish Intelicast would try). As for accuracy, known proxy services can be filtered out, as they tend to be big, fewer in nuber, and well known.
I think that the expanded domain space is going to be a big data problem, especially for smaller outfits.