The invention discloses a method and device for separating and extracting multiple signals, and relates to a method and device for direction finding, digital beam forming,
signal separation, automatic identification and continuous
demodulation of multiple signals in the field of communication reconnaissance. It consists of
antenna array, antenna switch array, nine-channel
receiver, post-
processing module, multi-
signal separation and
demodulation module, power supply and other components. It uses the
spatial spectrum estimation and direction-finding technology based on array
signal processing to obtain the
direction of arrival of electromagnetic signals, calculates weighted vectors and sets hardware devices through digital
beamforming and blind
beamforming methods, so as to detect multiple signals of the same frequency or different frequencies arriving at the same time. The signal is filtered in the
spatial domain, and the separated multi-channel signals are automatically identified and continuously demodulated and output. It has the characteristics of high interference suppression, fast
processing speed, low cost, convenient operation and maintenance, etc. It is especially suitable for multi-signal separation and extraction devices in communication countermeasures, intelligence reconnaissance, radio monitoring and other occasions.