The multiple signal demixing and parameter estimation problems that result from the impacts of
background noise and interference are issues that are frequently encountered in the fields of
radar sonar communications and navigation. Research in the signal processing and control
fields has always focused on improving the estimation performance of parameter estimation
methods at low SNR and maintaining the robustness of estimations in the presence of model
errors. This book presents a universal and robust relaxation estimation method (RELAX) and
introduces its basic principles and applications in the fields of classical line spectrum
estimation time of delay estimation DOA estimation and radar target imaging. This
information is explained comprehensively and in great detail and uses metaphors pertaining to
romantic relationships to visualize the basic problems of parameter estimation the basic
principles of the five types of classical parameter estimation methods and the relationships
between these principles. The book serves as a reference for scientists and technologists in
the fields of signal processing and control while also providing relevant information for
graduate students in the related fields.
