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Noise-like signals and their conversion used in radio communication systems

The actual problem of determining the principle of the transmission signal formation and its transformation into an initial signal providing stable radio communication in a radio interference situation is considered. This is typical when organizing the management of fire extinguishing units, especially in forests and steppes. The subject of the study is the use of a reprogrammable matched filter (PPSF), in which a spin echo processor with a working substance 59Co is used to convert phase-manipulated noise-like signals. The purpose of the work is to propose the use of a spin processor in the PPSF, which ensures the conversion of FM SHPS even in the presence of dynamically changing multipath. With this configuration of the radio-transmitting device, it becomes possible to organize multicast radio communication without deploying a base station. The results of the study include the results of machine modeling of the conversion of FM SHPS to PPSF under unfavorable conditions of formation of a three-beam signal at the input of a radio receiver. The structural diagrams of the FM SHPS and PPSF shaper of the laboratory installation on which the research was carried out are given. The obtained results of laboratory studies within the permissible error, when removing the results and in measuring instruments coincide with the results of machine modeling. Therefore, the considered principle of converting FM SHPS into PPSF, which is based on the principle of converting FM SHPS into a primary signal, can be successfully implemented in radio stations used by units of the Ministry of Emergency Situations of Russia in fire extinguishing areas.