Instruments and Systems: Monitoring, Control, and Diagnostics Annotation << Back Directions of Digitalization and Optimization of the Volume of Ground-Based Experimental Testing of Small Spacecraft Operating as Part of Multi-Satellite Space Systems I.S. TKACHENKO, V.I. KURENKOV The paper describes the directions of digitalization and optimizing the volume of ground-based experimental testing of small spacecraft for multi-satellite space systems. A variant of an expanded program of satellites's laboratory tests is proposed, taking into account not only its structural decomposition into elements and systems, but also the features characteristic of multi-satellite systems. In order to model the reliability of a multi-satellite space system, the number of allowable failures of spacecraft in the system was normalized. Logical and probabilistic models for increasing the reliability of satellites during ground-based experimental testing were considered. A method for identifying "weak" links in the structure of the experimental testing system for small spacecraft operating as part of multi-satellite space systems was proposed. Keywords: experimental testing system, small satellite, digitalization, volume optimization, logical and probabilistic methods, reliability, structural and logical scheme. DOI: 10.25791/pribor.3.2025.1567 Pp. 44-53.