Unsupervised Techniques for Identifying the Mode of a Multi-Functional Radar with Varying Pulse Sequences

A multifunctional radar (MFR) with varying pulse sequences can change its signal characteristics and/or pattern, based on the presence of targets and to avoid being jammed. To take a countermeasure against an MFR, it is crucial for an electronic warfare (EW) system to be able to identify and separate a MFR's modes via analyzing intercepted radar signals, without a priori knowledge. In this article, two correlation based methods, one taking the signal's order into account and another one ignoring the signal's order, are proposed and investigated for this task. The results demonstrate their great potential.

Automated summary

This article presents a multifunctional radar (MFR) that can vary its signal characteristics and/or pattern to adapt to the presence of targets and avoid being jammed. It is crucial for an electronic warfare (EW) system to be able to identify and separate the modes of a MFR by analyzing intercepted radar signals, without prior knowledge. Two correlation based methods, one considering the order of the signal and another one disregarding the order, are proposed and investigated in this study, showing great potential.