The book "Radionavigation systems of ultra-long range", written by a team of authors led by Boloshin S. B. , Olyanyuk P. In. and head-to-head G. In. is a unique study in the field of radio navigation that will be of interest to both professional engineers and researchers, as well as students studying modern technologies in the field of communication and navigation. This publication not only highlights the theoretical aspects of radio navigation systems, but also offers practical solutions, making it an indispensable tool for anyone who wants to deepen their knowledge in this area. The book covers a wide range of topics related to radio navigation, including the principles of ultra-long range (SDS) systems, their application in various industries, such as aviation, maritime navigation and even in space research. The authors examine in detail the physical basis of radio waves, their propagation and interaction with various objects, which allows the reader to better understand how modern navigation systems work. An important aspect of the book is also the analysis of existing technologies and prospects for their development, which makes it relevant for specialists involved in the design and implementation of new solutions in the field of radio navigation. Who can like this book? First of all, it will be of interest to students of technical universities studying in specialties related to radio engineering, electronics and navigation systems . It will also attract the attention of professionals working in the field of aviation and maritime transport, as well as researchers engaged in the development of new technologies and systems. The book will be an excellent addition to the library of any engineer who seeks to be aware of the latest achievements in his field. The topics raised in the book are not limited to technical aspects. The authors also address the safety and reliability of radio navigation systems, which is especially relevant in the light of modern challenges related to cyber threats and the need to protect data. The book also discusses the ethical aspects of the use of navigation technologies, which makes it useful not only for technicians, but also for a wide audience interested in the impact of technology on society. The style of the authors is distinguished by clarity and accessibility, which allows even complex technical concepts to be presented in an understandable and fascinating form. Boloshin, Olyanyuk and Golovushkin are experienced specialists in their field, and their knowledge and experience make the book a valuable resource for anyone who wants to understand the intricacies of radio navigation. Each section of the book contains illustrations and examples, which helps the reader to better absorb the material and apply it in practice. If you are looking for literature on radio navigation, which combines theory and practice, then “ultra-long range radio navigation systems” will be a real find for you. This is not just a book, but a whole world of knowledge that will open up new horizons and opportunities in the field of radio navigation. Do not miss the chance to immerse yourself in the fascinating world of technologies that make our lives safer and more convenient.