IPhone: Battery Efficient Real-Time GPS

What I want to do:

I want my iPhone to often (formally defined later) upload my GPS location to a central server. I want to do this in the most efficient way.

Studies I know:

Apple Documentation:

https://developer.apple.com/library/ios/#documentation/CoreLocation/Reference/CLLocation_Class/CLLocation/CLLocation.html#//apple_ref/doc/uid/TP40007126

Stack overflow links:

Answer 1

Answer: proof of existence; another tool can do it

How to reduce iPhone battery consumption when using GPS

Answer 2

Answer: only track cell changes

iPhone GPS - Battery Performance Too High

iPhone -

, "" , . , 5 , ; 10 , 10 .

• ( , , ?), GPS.
• /

. - :

• "" ?

[: . + .]