Waveform design for detection and jamming integrated multifunctional radar

It is increasingly demanded that multifunctional radars (MFRs) address electromagnetic compatibility issues caused by a growing number of devices mounted on the same platform. In this paper, we investigate a detection and jamming integrated MFR (DJI-MFR) system capable of operating simultaneously in target detection and electronic warfare (EW) modes. Waveform design poses a significant challenge for DJI-MFR, as it must emulate hostile radar waveforms to achieve jamming while concealing probing waveforms for effective detection. The proposed waveform design method combines a probing waveform component with a jamming waveform component. An integrated waveform with both non-constant and constant modulus properties is designed to accommodate transmitters operating in both linear and saturated states. To ensure detection performance, the autocorrelation of the probing waveform is constrained to a minimum requirement, whereas the cross-correlation between probing and jamming waveforms is restricted below a maximum tolerance threshold. This problem is formulated as an optimization framework and solved using a coordinate descent (CD) algorithm. Detection performance is evaluated by analyzing the signal-to-interference-and-noise ratio (SINR), while jamming effectiveness is quantified through the jamming-to-noise ratio (JNR). Numerical simulations demonstrate the efficacy of the proposed waveform design method for DJI-MFR.