Signal correlation estimator and detector

A signal correlation system comprising:

• at least one signal receiver configured to receive a plurality of signals;
• a data storage;
• and
• at least one processor coupled to the data storage and configured to execute a process comprising:
• receiving, via the at least one signal receiver, a plurality of data vectors representing the plurality of signals;
• determining, for each of the data vectors, a first plurality of correlation coefficients each based on a direct cross-correlation between each of the data vectors;
• calculating an average of the first plurality of correlation coefficients;
• determining, for each of the data vectors, a second plurality of correlation coefficients each based on an indirect cross-correlation between each of the data vectors and the average of the first plurality of correlation coefficients;
• and
• detecting a correlation between at least two of the data vectors based on the second plurality of correlation coefficients.

A computer program product including one or more non-transitory machine-readable mediums encoded with instructions that when executed by one or more processors cause a process to be carried out for correlating signals, the process comprising:

• receiving, via a signal receiver, a plurality of data vectors representing a plurality of signals;
• determining, for each of the data vectors, a first plurality of correlation coefficients each based on a direct cross-correlation between each of the data vectors;
• calculating an average of the first plurality of correlation coefficients;
• determining, for each of the data vectors, a second plurality of correlation coefficients each based on an indirect cross-correlation between each of the data vectors and the average of the first plurality of correlation coefficients;
• and
• detecting a correlation between at least two of the data vectors based on the second plurality of correlation coefficients.