COHERENT “PING-PONG” INTERFERENCE AND BACKWARD DIGITAL RADIO FREQUENCY MEMORY Russian patent published in 2021 - IPC H04K3/00 G01S7/38 

FIELD: radar and electronic warfare (REW).

SUBSTANCE: invention relates to radar and electronic warfare (REW) and is intended for protecting an object from high-precision weapons by producing angular interference to radar stations (RS). To achieve a technical result proposed is a method for producing a coherent interference which uses two spatially separated receiver-transmitter devices (RTD) with digital radio frequency memory (DRFM). Each device receives and records the received radio signal from the RS into the DRFM. In order to retransmit the signal, each device reproduces the recorded radio signal from the DRFM in a backward (reversible) direction than during recording, wherein the signal phase is changed by 180 degrees in one of the devices. In contrast to the usual organization of the work of signaling memory DRFM on the principle of «first in, first out», the work of signaling memory DRFM in this way organized according to the principle of «last in, first out», with the homing of the interference in the direction and stabilizing the resulting diagram of direction to the source of the signal being performed.

EFFECT: technical result consists in backward reproduction of the recorded radio signal.

10 cl, 7 dwg