Applied Physics and Mathematics Annotation << Back CORRECTION OF THE INERTIAL NAVIGATION SYSTEM USING A CONTROL ALGORITHM WITH IMPROVED CONTROLLABILITY CHARACTERISTICS PHAM XUAN FANG The correction scheme of platform inertial navigation systems by compensating for errors in its structure using a control algorithm is presented. A separation theorem is given, which allows considering the problems of estimation and control independently of each other. A control algorithm for the inertial navigation system used for correction is presented. To improve the accuracy of error compensation, it is proposed to use a model with improved controllability characteristics of state variables in the control algorithm. A numerical criterion for the degree of controllability is presented, which is used at the stage of designing the algorithmic support of the navigation system. The results of mathematical modeling demonstrated the effectiveness of the method used to improve the accuracy of navigation definitions of a dynamic object. Keywords: dynamic object model, separation theorem, degree of controllability, inertial navigation system errors, correction in the system structure. DOI: 10.25791/pfim.06.2024.1316 Pp. 35-42.