Investigation of the Emergency Mode of the SINS-500NS Strapdown Inertial-Satellite Navigation System Based on Flight Data

The emergency operation mode of the SINS500NS inertial satellite navigation system associated with the loss of flight and navigation information is considered. Such a loss is possible, for example, with a short-term power outage, as well as with exceeding the measurement ranges of the inertial sensors: gyros and accelerometers. In this case, it is necessary to solve the problem of the initial SINS alignment in flight. It is proposed to solve such a problem using satellite information and special flight modes. The results of the seminatural testing of the emergency mode according to the registered flight data are presented.