WUT researcher publishes book on signal processing and radar

The book is devoted to the analysis of nonstationary radar signals – signals whose properties change over time, space or several dimensions simultaneously. It presents methods for analysing, decomposing and interpreting complex radar data, based primarily on the Fourier transform. Particular attention is given to time–frequency and multidimensional analysis, including the windowed two-dimensional Fourier transform. The methods described make it possible to transform raw radar data into information about observed objects, their motion and propagation conditions. The book combines classical Fourier-based methods with more recent techniques such as synchrosqueezing and adaptive signal decomposition.

The author’s contribution

"I present my own methods for solving practical problems in radar signal analysis, including algorithms for decomposing one-, two- and multidimensional signals," says Karol Abratkiewicz, PhD. "I demonstrate how they work not only through simulations, but also using data from real radar systems."

An open-source toolbox developed in MATLAB is an integral companion to the book. It enables readers to reproduce the examples presented, conduct their own experiments and apply the methods described to their own data. The publication also contains dozens of theoretical and practical exercises with solutions, helping readers to test and consolidate their knowledge.

A practical focus

The book is intended primarily for senior students on Bachelor’s and Master’s programmes, doctoral students, researchers and engineers working in signal processing, radar, sonar, telecommunications and related fields. It may be particularly useful to those involved in designing, developing and analysing radar systems for both civilian and defence applications.

"The publication shows how mathematical concepts and tools can be translated into solutions to real engineering problems," explains Karol Abratkiewicz, PhD. "It can serve as an academic textbook, a resource for independent study and a practical reference for specialists."

Towards habilitation

This is the researcher’s first book. It summarises and organises the experience he gained while working on his doctoral dissertation and through the research he has conducted since completing it. At the same time, it provides a starting point for further work on the analysis of nonstationary and multidimensional radar signals.

"The book also forms part of the body of work constituting the scientific achievement on the basis of which I intend to apply for habilitation," says Karol Abratkiewicz, PhD.