Power draw from GPS - Does granularity affect amount of power drawn? We all know that GPS draws a considerable amount of battery power.  Does anyone know of any studies that test the "granularity" of a GPS signal with how much battery is consumed?

I'm not talking about the device-GPS vs cell network triangulated GPS either, the applications in Android can select a distance (1 meter, 5 meters, 500 meters, etc) at which they will be notified of a changed location.  I imagine that regardless of what this value is set at, the GPS is actively getting a new location very rapidly, and only notifying the app as soon as it wants.  

Does anyone know of any studies for power draw with different GPS settings?  Thanks!
GPS is a passive technology - it doesn't get notified of a new position, it works it out by listening to the GPS signals it receives and doing some maths.

The options in GPS apps that allow you to choose the minimum distance are there to make your location appear more stable - small variations in your calculated location would otherwise make for lots and lots of waypoints on your track (if that's what you're recording), making for a much increased filesize.

Depending on what your app does when you change position, you might get some power savings by increasing this value, but that would be down to the app doing less with the position once it has it, rather than by getting your position less frequently.

The Glympse app, for example, continually sends your position to the Glympse servers.  If you could choose how often to update that position you could maybe save some power, but you wouldn't be saving any power on the GPS side of things.