Aerospace Instrument-Making Annotation << Back MONITORING AND PROTECTION OF INERTIAL SATELLITE NAVIGATION SYSTEMS FROM NATURAL AND IMITATION INTERFERENCE A.V. Chernodarov, A.P. Patrikeev, S.A. Ivanov This paper is devoted to the problem of detecting and countering imitation interference in inertial-satellite navigation systems. The proposed solutions to the problem are based on the decomposition of diagnostic models of such systems, on the processing of increments of the observed parameters, and on the application of combined statistical criteria. The results of full-scale and seminatural experiments with the integrated inertial-satellite navigation system SINS-500NS are presented and analyzed. Keywords: inertial navigation system, satellite navigation system, natural interference, imitation interference, information integrity, monitoring, extended Kalman filter. DOI: 10.25791/aviakosmos.08.2020.1171 Pp. 15-27.