A method for improving extended Kalman filter performance for angle-only passive ranging
J.R. Guerci, R.A. Goetz, J. DiModica · IEEE Transactions on Aerospace and Electronic Systems · 1994
A relatively simple method is presented which eliminates previously reported (Oct. 1985) erratic estimation performance associated with Cartesian formulations of the extended Kalman filter (EKF) for the 2D angle-only emitter location problem. The technique is based on an initialization procedure which combines a priori probability density function (pdf) information with single measurement a posteriori pdf information in a manner which is more efficient than the EKF. Simulation results are presented which demonstrate the utility of the technique as compared with a previously offered modified gain EKF.>