Open AccessINS/CNS integrated filtering technique based on celestial calibration
Author(s) -
Fei Yan,
Wei Zhao,
Hao Hong,
Fenghao Zhao,
Juzhong Liu
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/768/4/042015
Subject(s) - adaptability , inertial navigation system , celestial navigation , computer science , mode (computer interface) , navigation system , calibration , component (thermodynamics) , inertia , signal (programming language) , inertial frame of reference , control theory (sociology) , real time computing , artificial intelligence , mathematics , physics , ecology , statistics , thermodynamics , control (management) , classical mechanics , quantum mechanics , astronomy , biology , operating system , programming language
This paper analyzes the filtering mode and working characteristics of INS/CNS system according to application features of celestial equipment. In view of combination mode of gyro drift calibrated by CNS, this paper establishes corresponding filtering model according to different measurement information selected by INS/CNS system. The error of inertia component is compensated by virtue of star vector estimate value so as to guarantee the long-term precision of inertial navigation. Simulation analysis verifies that this method may improve adaptability of INS/CNS system to environment, and effectively guarantee the navigation precision in long-time operation of the system.