Your project is too good .But to see the position of the ball what are you using ??
Means You are using tha camera .
And in which language you will code in PC.
Matlab
C
or any else.
Just like your project there is competetion FIRA.
You must watch vedio on
www.fira.net 11 vs 11
that is very nice.
And wireless communication is not a problem here .You can use Wi-Fi
or you can use GSM also .
Or if you want a small distance robot than you may also use simple transmitter and receiver .
Firstly you must code in the PC.
that is tough in this project ......
Best Of Luck ..........