Digitisation in GPS Acquisition

Dear all,

I have a query about acquisition in GNSS. I have an input data i.e., in noise. I need to perform acquisition to get which satellite data is present in the data. Hence I wrote code for C/A gold codes. Now I have to digitize the data.

My query is which data have I need to digitize? and how ?. Can some one please explain in steps how to perform circular correlation in acquisition after generating C/A gold codes and having input data in .bin file.

I am new to Matlab.

Thanks