Parametric modeling of radio engineering devices at the stage of system design

Abstract

System design provides for solving the task of comparative analysis and choosing the best option for constructing a radio engineering device. Its main result should be a structural diagram of the product and an assessment of the effectiveness of its implementation. The number of possible structural options for their implementation is limited when designing radio engineering devices of a certain class, so the search for the best option is mainly determined by the costs of its implementation, provided that the requirements of the technical specifications are fully satisfied. The main way to reduce the costs of developing devices is to use high-availability modules as much as possible in the designed product, which means electronic modules that have passed certain stages of development or have at least working design documentation. Then, the task of system design is reduced to solving the task of covering the given structures of high-availability modules, and the efficiency of its solution depends to a large extent on the number of possible alternatives. The methodology of using parametric modeling to determine the best option of construction of a radio engineering device (system) is considered. It is proposed to use an information approach to assess the degree of coincidence of the parametric models of highavailability modules with the values of parameters specified in the technical specifications while maintaining a given level of reliability. The degree of coincidence is evaluated by three criteria: informativeness, adequacy, and accuracy. It is shown that the considered methodology makes it possible to solve the parametric synthesis task of the effective structure of a radio engineering device while maintaining its specified reliability. The resulting options are highly reliable because the cost estimation is performed by real developers. As information on the actual costs for possible modifications of high-availability modules is accumulated, the preliminary cost estimation procedure can be automated.