Implementation and Demonstration of Transmit Waveform Shaped Interference with COTS SDR

This paper outlines the transmit waveform shaped (TWS) interference model, hardware requirements of the shaped interference model, and implementation with low-cost, commercial-off-the-shelf (COTS) software-defined radio archi-tecture. The demonstration utilizes open-source software and hardware to implement the TWS technique with linear frequency modulation (LFM) radar signal and root-raised cosine pulse shaped quadrature phase-shift keying (QPSK) signal in real time. The research describes the software and hardware initialization steps and functions required to decrease latency and efficiency with large matrix operations. Using modular and low-cost tools (< $200), this paper describes a method for deployment of electromagnetic (EM) or radio frequency (RF) emission and testing on a broad range radar and communications systems. Furthermore, the paper describes how this low-cost open source architecture provides a test bed for electromagnetic protection techniques.