SOFTWARE DEFINED RADIO SYSTEMS AS A BASIS FOR THE DEVELOPMENT OF NEW GENERATION DIRECTION FINDING RADIO TECHNICAL SYSTEMS

Abstract

The current trend of penetration of SDR (Software Defined Radio) in science, industry is determined by the emergence of affordable and multifunctional software and hardware solutions. Analysis of the experience in the development of modern radio systems allows us to speak about the emergence of a new paradigm in the field of telecommunications and radio communications, related to the direction of SDR. From the point of view of the developer of modern radio equipment, the direction of SDR is multi-vector and covers the following areas of application: radio receiving and transmitting devices, radar and direction finding, electrical communication systems. SDR is gaining ground and becoming an invaluable research and development tool in the radio and telecommunications industry for rapidly prototyping new circuitry and algorithmic solutions in real electronic equipment and evaluating it in real operating conditions. Thanks to the development of microprocessor technologies, RF equipment and software, SDR has become into a reliable tool in the arsenal of the designer of radio engineering equipment, and this, in turn, has changed the way innovative solutions in the radio engineering sector of the industry are formed to technical problems. The transition from continuous to discrete signal representation is determined by a compromise between the wide functionality of the radio station, on the one hand, and reasonable operational parameters when meeting the requirements of electromagnetic compatibility standards, on the other. The receiver of an “ideal” SDR radio station should have a minimum firmware, independent of frequency, modulation type and channel width, and meet the requirements of electromagnetic compatibility standards. The aim of the work is a historical overview and review of current trends in the field of radio systems based on SDR systems. To do this, the paper analyses the features of standardization and architecture of SDR radio, current trends in SDR use, foreign experience of SDR use, evolution of SDR radio stations, structure of RTL-SDR radio receiver, features of SDR receiver implementation in Specialized SoftWare (SSW).