How Satnav logic works

[gboy]

has anyone ever wondered how this works ?

I would love to see some satnav (Satellite navigation) code.

I am sure this is a question many people have asked.

 

[proximiti99]

What is satnav?

 

[Brawler]

Gps

 

[Brawler]

http://www.howstuffworks.com/gps.htm

 

[proximiti99]

Thanks. The linky shud help gboy as well

 

[gboy]

I know how GPS works, i would like to know how those in-car units work, how does it calculate turns, lane changes ect, how does the database work, as far as i can work out, it uses a recursive logic to match its position to positions stored in a defined route.