An Effective Integrated Communication and Localization Method Based on Digital Phased Array Antenna

According to the application requirements of microwave broadband information distribution and mutual positioning in warship formation combat system, an integrated communication and localization method based on digital phased array antenna is proposed, in which the simultaneous multi-beam forming technology is applied to shorten the time of signal search and communication link building, the monopulse sum-difference beam approach and two-way transmission delay are employed correspondingly to carry out accurate direction finding and ranging, moreover, in view of correlation characteristics of communication signal in time domain, the filtering operation is conducted so as to further improve the positioning performance. The communication and localization function are designed unitarily in the method presented in this paper, which can reduce the occupied space on warship platform and enhance stealth and electromagnetic compatibility performance. What’s more, it is not dependent on satellite system, especially suitable for cooperative combat occasions of warship formation under weak navigation or even satellite rejection environment.