Airborne Single-Observer Passive Location Algorithm Based on Robust EKF
ZHANG Yi-hang
CHEN Shu-xin
WU Hao
ZHANG Heng-yang
Abstract：In the application of airbone single-observer passive wireless radio frequency inj ection location,if there has outliers in the observed value,the application of the EKF algorithm will make the location esti-mation biased.Therefore,a robust EKF algorithm is applied to airborne single-observer passive wireless radio frequency inj ection location system.Firstly,airbone single-observer passive bearing location model is build,and the robust equivalent weight matrix built by standardized observation residuals is used to resist outliers.Then,in order to improve the efficiency of passive location system,the robust EKF based on chi-square test is proposed by creating a chi-square statistical model.It can distinguish outliers through chi-square test,and then call the robust EKF to complete location solution.Through rej ecting single outlier and continuing outliers to test the ability of the algorithm.Simulation result shows that the suggested algo-rithm has great outlier suppression ability and the robust EKF based on chi-square test is fast.
Keywords：passive locationsingle-observer locationrobust extended Kalman filterlocation accuracy
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 75-78,87 )