Development of Pulse-Tracking Noise-Generation DRFM(Digital Radio Frequency Memory) Using Phase Synthesis

In electronic warfare, to protect allies from enemies, DRFM(digital radio frequency memory) is used to receive threat signals and generate various electronic interference signals to deceive them. The use of noise is an efficient interference method, which is less affected by radar receiver characteristics. It is generated mainly by noise-generating devices. As the signal form of a modern radar changes in real time, the conventional noise generation method has a limitation of interference in response to a change in the threat signal. In this paper, to avoid these limitations, we propose a method to generate DRFM real-time noise. The proposed method generated a noise signal by utilizing phase synthesis with the DRFM self-detection signal without the basic pulse tracking process. The proposed method was verified through a simulation and prototype fabrication and testing, in agreement with the expected results.