I have a set of GPS satellite signal data, the set is 1 ms long and has the information of two satellites (satellite number, code phase and frequency) buried in noise. This data has a carrier frequency of 4.309 Mhz and the sampling rate is 5.714 Mhz.I've been reading but I don't really have pretty clear what to do:
which are the options to make the acquisition? As far as I've read, there are two options: time and frequency based acquisition. which is the best option to use?
The set of data is noisy and continuous:
I have generated the C/A gold sequencies sampled at 5.714 Mhz in order to perform the correlation with the satellite data. How can I design a narrowband filter to get rid of the noise? The local coded I generated are sequencies of +1's and -1's. Do I need to convert this data also into -1's and +1's to perform the acquisition?
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