Russian navigation satellite system: results and prospects

Global navigation satellite systems, including the Russian GLONASS, have become an integral part of society’s life. The article discusses the basic principles of navigation, the composition of the space complex, the errors in determining the position of the consumer and methods for improving the most important characteristics of the system, primarily accuracy. Special attention is paid to the state and development of the orbital grouping of the GLONASS system as its key link and to improving noise immunity, critical for any dual-use satellite system, the principles of creating integrated inertial navigation systems are given. Proposals are made to counter threats related to coordinate-time and navigation support by creating a consortium of BRICS countries.