FIELD: computer equipment.
SUBSTANCE: group of inventions relates to computing and can be used for signal processing. Method comprises the following steps: receiving, at a receiver, signal data; processing a sample of the signal data to provide a processed signal sample comprising data relating to the encrypted portion of the signal data and data relating to the unencrypted portion of the signal data, comparing the unencrypted signal data with at least one reference signal to determine information comprising at least one of (I) the time at which the signal was sent from the source and (II) the identity of the source; requesting, based on the determined information from a source remote to the receiver, a set of encrypted reference signal samples; comparing, on a processing device remote to the receiver, the set of encrypted reference signal samples with the received encrypted signal data to identify any matching signal samples.
EFFECT: higher processing speed, improved signal detection.
32 cl, 10 dwg
