Research On Inertial/Celestial Navigation System Algorithm

Because of the particularity of its task and application environment,the navigation system model cannot meet the required requirements for the reliability and precision of the system.The inertial navigation system(INS)and the celestial navigation system(CNS)have their own advantages and disadvantages,and their combination can give full play to their advantages,constitute a strong autonomy and anti-interference ability of high-precision navigation system.For this reason,this paper will focus on inertial/celestial navigation technology to carry out relevant research,analysis of inertial/celestial navigation system error algorithm and amended,can be applied to such as deep sea,desert,mountain and other special environment long navigation attitude,positioning inertia/celestial combination of navigation program.In this paper,we first study the error model and the main influencing factors for different navigation methods of single navigation system,and establish the error model of inertial navigation and celestial navigation separately.Based on this,the inertial navigation part analyzes the Kalman filter method and establishes the mathematical arrangement Equation,celestial navigation part proposed based on the height difference method and the star sensor mathematical model and algorithm.On the basis of the above research,taking into account the inertia navigation of the main gyroscope error over time and the special circumstances of the subsystem may not work,etc.the use of celestial navigation information to achieve inertial navigation system error mutual correction,research and analysis of different The inertial/celestial adaptive fusion algorithm model is proposed,and the inertial/celestial integrated navigation system based on gyroscope error is analyzed and analyzed.The inertial/celestial adaptive fusion algorithm model is proposed.In this paper,an inertial/celestial navigation simulation platform based on STK/Matlab is designed.Based on the study of inertial/celestial navigation algorithm,the flight path,inertial navigation subsystem,celestial navigation subsystem,environment,navigation time And so on,this paper provides a verification platform for the analysis of inertial/celestial navigation system algorithms.