Technique for post-correlation beamforming

A receiver system for correlating one or more signals comprising:

• one or more antenna elements configured to receive the one or more signals;
• a controller including one or more processors configured to execute program instructions causing the one or more processors to:
• duplicate the one or more signals into a first set of duplicated signals and a second set of duplicated signals;
• generate one or more correlator outputs based on the first set of duplicated signals using one or more correlators, and generate a first set of beams based on the one or more correlator outputs using a first beamforming module;
• generate a second set of beams based on the second set of duplicated signals using a second beamforming module, and generate one or more power estimates based on the second set of beams using one or more power estimators,
• wherein each of the first set of beams corresponds to a respective one of the one or more power estimates;
• and
• divide each of the first set of beams by the corresponding one of the one power estimates using one or more dividers to generate one or more normalized correlations,
• wherein the one or more antenna elements comprises L antenna elements, wherein L is an integer greater than or equal to one, wherein L is less than M,
• wherein the normalized correlations enter a thresholding module configured to compare each of the normalized correlations to a correlation threshold.