Design and simulation of DRFM system based on digital channelized receiver and transmitter

A new model of digital radio frequency memory (DRFM) system based on digital channelized receiver and transmitter is proposed. It uses channelized receiver to achieve broad instantaneous frequency coverage and slow down the data rate to realize complicated amplitude and frequency modulation, and employs channelized transmitter to fulfill simultaneous transmitting of multichannel signals. The theories of digital channelized receiver and transmitter are stated and the realization structures are derived respectively, then a new DRFM architecture is introduced. The related simulation results verify the correctness and feasibility of the theories and methods involved in this paper. The requirement of calculation capacity for DRFM system is reduced significantly due to optimization of this system, so the proposed DRFM system can be applied in radar countermeasure system.