Methods and systems for passive information discovery using cross spectral density and coherence processing

摘要

A method analyzing communication in a network [100, 200] may include obtaining time of arrival information for chunks of data in the network. A number of signals [410-460] may be constructed to represent the time of arrival information at respective nodes in the network. A pair of the number of signals may be processed to obtain similarity information [610-660, 710-760] about data flow between a corresponding pair of nodes. Data flow between the pair of nodes may be analyzed using the cross spectral density or coherence information.