Article ​​​​​ If only the L1 GPS(BPSK(1)) demodulation is desired; is it ok to record only the I bits, then demodulate with Matlab software?

It is possible to use a logic analyzer to capture a record of the I (or I + Q) samples, then post-process the samples in Matlab. It is important to realize that a capture of at least 40 seconds of samples is needed to result in multi-giga-byte sized files.
 

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