Omnidirectional pseudo-antenna for interrogator or system allowing the interrogation response and/or passive listening functions

摘要

System and method making it possible to operate in an interrogator mode and/or in a passive listening mode wherein it comprises in combination at least the following elements: an antenna (6) having a given aperture sector, a control means (31) making it possible to toggle the system into a first interrogator operating mode using a first given angle sector or into a second passive listening operating mode using a second angle sector of greater value than the first, means (23) making it possible to add together the signals received on the sum pathway and on the difference pathway of the antenna in the case of the passive listening operating mode.