Quote:
Originally Posted by briank555
Now first, I know that the purpose of GPS is to locate and assist you in getting from one spot to another. I'm basically looking for a fundamental explanation as to how GPS, or rather, how GPS on a phone works compared to normal systems.
My understanding is that the technology is line-of-site based. Is this the same for the 8800? Meaning, do I need to have my BB out in the open, pointed a certain way to utilize this service? I have BB Maps and GPS working, in a very limited way but I wonder if it will still function when I'm in my car and the signal is being blocked from the car, etc.
So I assume that while indoors, you won't get any response from GPS because its inside, but again I'd love to be corrected if I'm wrong here.
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GPS receivers work best when they're outdoors. Some receivers are very sensitive and they'll work while indoors, especially if you're just in a wood frame house. Most receivers will not work at all in an office building -- definitely not if the glass is shielded.
Generally speaking most GPS receivers need 35-45 seconds to get a fix from a cold start. This can be augmented by data provided by cell towers (supposedly the 8800 does this) to get a cold fix in under 6.5 seconds.
Your body can shield the antenna from GPS signals, so it works best if away from your body. Once the GPS has acquired a position, its need for constant satellite access is greatly reduced and you will probably get good results while clipped to your belt, sitting in a car seat, etc.