United time-space multi-path searching method and apparatus with fixed multi-beam intellectual antenna

A combined space-time multi path searching method for fixed multi beam intelligent antenna and its device. It includes: the base band samples signal converting the received radio frequency signal to signal waiting to process; makes beam forming to the odd number or even numbered beam in the base sampled signal to form the beam signal; makes time delay power spectrum process to the odd number or even numbered beam to separately generate relevant time delay spectrum to each beam; adds energy gotten from all odd number or even numbered beam according to corresponding phase to get total energy corresponding to all phase; makes multi path location determine to the energy corresponding to each phase to get and outputs every multi path phase information; makes multi beam determine, according to each multi path phase information and the energy corresponded by deferent beam, confirms the numbers of the beam which the multi path is at; outputs the above beam's numbers and phase information. The invention saves N/2 number of multi path searcher corresponding to original system.