An increase in the informative content of the calculated values of the reliability measure (RM) of objects, whose reliability is ensured by the redundancy of structural elements, is considered in the article. The increase of the informative content is ensured using the interval estimates of the RM. In the normal reliability calculation, the calculated value of the object’s RM is unambiguous, and for an interval reliability estimate, the value range is obtained, which can be quite appreciated as the increase in the informative content. The choice of on-board equipment for small spacecrafts as an object of research in this work is determined as follows: at present, the vast majority of spacecrafts can be classified as small spacecrafts; since the reliability of small spacecrafts is high, it is necessary to use redundancy; the Belarusian spacecraft for remote sen-sing of the Earth belongs to the category of small spacecrafts. As a result of research, the formulas for calculation of interval estimation results are established for the linear and nonlinear dependence of the object’s RM on the RM of its elements. Structural reliability schemes (SSR) are used as an object (system) reliability model, which includes blocks of elements without redundancy (simple) and blocks with different-type redundancy (complex). The object’s RM is a reliability measure determined by its SSR. Therefore, for an interval estimation of the object’s RM to be obtained, the interval estimates of the RM of its blocks must be made. RM interval estimates of simple and complex SSR blocks are obtained in the article. Complex blocks were considered as a set of parallel circuits provi- ding: continuous redundancy for all loaded circuits; non-continuous redundancy of loaded and unloaded circuits; standby redun-dancy; redundancy by voting. The formulas for interval estimation of the object’s RM represented by the SSR and the example of using the methodology on the component part of a real on-board information system are given in the article. The boundary values of the interval estimates of the example can be taken as optimistic and pessimistic estimates.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.