just trying to do my part. contribution is what makes ppcgeeks work.
JollyRoger, your GPS 101 Info is very very enlightning and usefull. Not sure if it is on the GPS sticky but it SHOULD be. I will leave my gps on all night and day and report back soon.
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Originally Posted by JOLLYROGER
And now some final notes about slow satellite tracking (GPS 101 if you will...):
All GPS units store information about the GPS satellite constellation. These are not geo-synchronous satellites like DirecTV or Sirius Radio. They are in lower orbit and are constantly moving.
Once locked on, the GPS satellites move in and out of visibility, the GPS stores a running log of when and where it last saw a particular satellite allowing it to more accurately predict when it will see that same satellite again and approximately where that satellite will be in orbit at that time. The more accurately a GPS can predict a satellites location, the quicker it will lock on to it.
Since the entire constellation cycles every few hours, I left my phone sitting docked on the cradle over-night running Google Maps in GPS mode in order to let the GPS unit build up a good solid almanac of the constellation. This morning I'm consistantly able to track 7-9 satellites at any given moment and it only takes seconds to lock on after exiting the program. This includes hard resets, soft resets, standby mode, etc.
All that said, the longer you let your GPS run, the better it will get. Conversely, since the satellites do shift orbit somewhat, the longer you let your GPS sit between uses, the more out of date your almanac becomes, and the longer it will take for that initial lock on.
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If ANYONE wants to host the patch file FEEL 1000% FREE TO DO SO.
i know the server i used sucks. i just wanted to 'get-it-out-there'. i will gladly update the first post if you get a mirror for me.