Abstract
This paper describes the design, implementation, and testing of a novel multi-function software defined Radio Frequency (RF) system designed for small airborne drone applications. The system was created using an inexpensive Field Programmable Gate Array (FPGA) to combine a coherent linear frequency modulated radar transmitter and receiver, with a Digital Radio Frequency Memory (DRFM) jammer for use with a common RF aperture in simultaneous operation. The system was implemented on a Xilinx Kintex-7 FPGA with a wideband analogue-to-digital/ digital-to-analogue (ADC/DAC) converter mezzanine board and tested using hardware-in-the-loop mode to validate its performance. This is the first known account of an integrated multifunction electronic attack and radar system on a single chip, capable of performing a simultaneous, not time shared, operation.
Highlights
Digital Radio Frequency Memory (DRFM) jammers have existed for several decades evolving from simple mono-bit devices to modern wideband, high dynamic range systems, with fully coherent receivers and transmitters [1]
No published research has been conducted to understand the fundamental relationship of a DRFM system: the interaction between the deceptive waveform it generates and the radar receiver [2,3,4,5,6,7,8,9,10]
To understand how DRFM performance changed with the system architecture and the waveforms it encountered, a comparison of received and transmitted waveforms was conducted using a correlation
Summary
Digital Radio Frequency Memory (DRFM) jammers have existed for several decades evolving from simple mono-bit devices to modern wideband, high dynamic range systems, with fully coherent receivers and transmitters [1]. No published research has been conducted to understand the fundamental relationship of a DRFM system: the interaction between the deceptive waveform it generates and the radar receiver [2,3,4,5,6,7,8,9,10]. Understanding of the DRFM-radar interaction is fundamental to Electronic Attack (EA) design, allowing for the proper jammer waveform parameters (power, frequency, technique, etc.) to be chosen for maximum effectiveness. The goal of this paper is to illuminate that relationship, the factors that affect it, and propose a more effective DRFM architecture in order to improve the Electronic Attack (EA) and Electronic Protection (EP) engineering processes. Building on the study of DRFM jammer-radar receiver interaction, a novel jammer architecture is proposed and implemented to effectively counter modern forms of electronic protection
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