METHOD FOR EXTENDING THE TIME OF ILLUMINATION OF TARGETS BY SECONDARY RADAR

摘要

The subject of the invention is a secondary rotating antenna radar, configured to transmit interrogations in S or IFF mode and to process the responses to these interrogations. This radar comprises an antenna having a lobe with three channels or diagrams, a channel Sum a Difference channel and a Control channel, whose transmission means are configured to issue interrogation messages on the channels Sum and Difference and whose means In addition to conventional detections via the Sum channel, detection and processing are configured in such a way as to detect, by the Difference channel, the responses of the aircraft interrogated by the same channel. The radar according to the invention also comprises spatiotemporal management means configured to elaborate interrogation messages and to determine whether a given message is to be transmitted by the Sum channel, the Difference channel or the two channels simultaneously and to control the transmission of the message. this message by the corresponding transmission channel.