БАГАТОКАНАЛЬНИЙ РАДІОПРИЙМАЛЬНИЙ ПРИСТРІЙ ІЗ РОЗШИРЕНИМ ЧАСТОТНИМ ДІАПАЗОНОМ ПРИЙМАННЯ

Abstract

In the context of the crisis situation on the territory of Ukraine in the eastern regions of the country, monitoring the situation and its changes is of key importance. As a result, monitoring systems and tools are subject to new requirements for speed and efficiency. Currently, in the field of development and design of modern radio receivers there is a rapid increase in requirements for their speed, cost, power supply and spectral efficiency [1]. In the practice of radio monitoring, there is a contradiction between the need to ensure strict requirements for the power consumption of the radio receiver and the expansion of the frequency reception range. The use of tunable digital-to-digital converters (ADCs) with a maximum sampling rate insufficient to accommodate the entire center frequency range of the main reception channel in the zero band of Nyquist [2]. Changing the sampling rate according to the frequency of the main reception channel functionally limits the multichannel reception path due to the need to use different sampling frequencies for reception at different frequencies. Most of the requirements for radio monitoring systems and means are met by radio receiving paths based on SDR technology [3], which is based on digitization of the radio signal in the time scale close to real and further digital signal processing (DOS) software or hardware digital - digital digital signal processors or specialized systems on the chip. This technology allows you to replace the huge variety of existing and developed designs of radios and transceivers, both serial and, above all, amateur, built on a complex superheterodyne scheme, a limited number of available hardware units operating under control. This will simplify and reduce the cost of design, significantly improve performance, support all kinds of modulation, the emergence of a large number of service functions, as well as speed up development. SDR technology can be used in radio frequency recognition (RFID) systems that operate at different frequencies and use different protocols. The article considers the method of reception and processing of radio signals to ensure the effective cost and power consumption of multi-channel radio communication in the extended frequency range. The effectiveness of such an approach is substantiated. The block diagram that implements the proposed method is presented.