Aerospace Instrument-Making Annotation << Back METHODS FOR THE FORMATION OF ALGORITHMIC SUPPORT FOR NAVIGATION SYSTEMS WITH VARIABLE STRUCTURE A.V. Proletarskiy, M.S. Selezneva, K.A. Neusypin The problem of synthesis of algorithmic support for navigation systems of aircraft is considered. The most pressing problems of modern navigation systems are highlighted. The compact algorithmic solutions that are easily implemented in the on-board computer are presented. The choice of the optimal working contour of the navigation complex is carried out by means of an original selection criterion. To create algorithmic support, a system synthesis approach was used, which allows the formation of models of optimal complexity during the flight. Evaluation of the effi ciency of the working contour of the navigation complex and algorithmic support is carried out using a simple numerical criterion. Keywords: aircraft, navigation complex, working circuit, integrated information processing, efficiency assessment, error models of navigation systems, system synthesis. DOI: 10.25791/aviakosmos.1.2022.1260 Pp. 20-33.