New method for fusion of inertial navigation system error coefficients with multi-source testing data
Fu Min · Journal of Chinese Inertial Technology · 2011
A new method for fusion of inertial navigation system(INS) error coefficients is proposed with the aim to efficiently utilize various kinds of the INS testing data.In each test,the error model coefficients are selected according to their weights on navigation errors.Subsequently,the coefficients are separated into two parts,called detached coefficients and common coefficients.Detached coefficients are used as the fusion re-sults directly.The common coefficients are fused with different weights.The weights are found out by ran-dom searching arithmetic with the trace of evaluated variance matrix as cost function.The error coefficients separated from the vehicle-loaded,airborne and rocket sled testing data are used for fusion experiment.The experiment results show that the proposed method could get good performance.