Description: The purpose of this article is to analyze the error of the calculation of the strap down inertial navigation system. The research was built in the visual environment of the Simulink interactive Matlab system. The influence of systematic instrumental errors on primary information sensors on the accuracy of determining the vertical position and absolute velocity of the aircraft was explored by Simulinkmodel of a single channel’s strap down inertial navigation system. The research results confirm theoretical calculations. It also accurately indicates that the accuracy of the calculation of navigational parameters depends on the instrumental errors of the sensors of the primary information. The results of calculating the navigational parameters of the strap down inertial navigation system have one order with the platform inertial navigation system. It really was completely installed by the scientific research. The results obtained can be applied to the development and operation of navigation systems. This article is intended for the useing by the public for future’s scientific papers, taking into account the results of this study.
Keywords: platform inertial navigation system; strap down inertial navigation system; angel speed sensor; antiterrorist operation; aircraft