Instruments and Systems: Monitoring, Control, and Diagnostics Annotation << Back Development of the method of determining the achieved accuracy of corrected navigation systems KAI SHEN, K.A. NEUSYPIN, M.S. SELEZNEVA, A.V. PROLETARSKY The problem of determining the achievable accuracy of corrected inertial navigation systems of aircrafts is investigated. The scheme of navigation systems correction using the estimation algorithm is considered. A criterion for the degree of observability of linear nonstationary systems is presented. Qualitative characteristics of the observability of the inertial navigation system linear non-stationary errors state variables are investigated. Modeling of estimation algorithms using laboratory experiment data with navigation systems AIST350, TS-060K was carried out. In the estimation algorithm models, different values of the average frequency of the change in the drift of the gyroplatform are used. A method for studying the achievable accuracy of corrected navigation systems has been developed. This method makes it possible to make an informed decision about using system in the design of the aircraft avionics. Keywords: aircraft, design of avionics, inertial navigation system, correction, achievable accuracy, degree of observability, qualitative characteristics analysis. Contacts: E-mail: m.s.selezneva@mail.ru Pp. 38-46.