Hello,
The following website defines and discusses cyclic autocorrelation functions, which are there defined as the fourier coefficients of the autocorrelation function:
LabVIEW has frequency domain functions which you may find useful - but the palette navigation will depend on what version you are using. Either way, they won't be hard to find 🙂 How to implement the solution in LabVIEW is a design choice, the same as it would be in any development environment. If there is something about LabVIEW specifically which isn't clear, definitely repost and I'll continue to try to help!
Best Regards,
JLS