Multi-target and large-bandwidth communication signal reconnaissance guiding device based on DBF

The invention discloses a multi-target and large-bandwidth communication signal reconnaissance guiding device based on a DBF. A DBF antenna comprises a 2-4 GHz antenna array and a plurality of groups of 1-2 GHz antenna arrays; each group of 1-2GHz antenna arrays are distributed around the 2-4GHz antenna array; the DBF antenna carries out simultaneous multi-beam direction finding on a plurality of channels exceeding a monitoring threshold to obtain radio frequency signals, the DBF antenna receives the radio frequency signals of a plurality of targets exceeding the monitoring threshold, and the DBF antenna sends the radio frequency signals to a radio frequency signal receiver; the radio frequency signal receiver is used for converting a radio frequency signal into an intermediate frequency signal and controlling the amplitude of the intermediate frequency signal; the AD acquisition module is used for sampling the intermediate frequency signal to obtain a digital signal and sending the digital signal to the DBF