Practical Time-to-go Estimation Based on Constant Relative Acceleration

摘要

This paper addressed the problem of computing practical time-to-go estimation, when constant relative acceleration and measurement distribution were considered. Firstly, a time-to-go arithmetic was obtained based on missile and target engagement geometry. The method is a combination of three time-to-go estimate formulations. Then time-to-go estimator was designed by applying the modified gain extended Kalman filter theory. Simulation results show that the proposed estimator can estimate the time-to-go very effectively. The proposed method is simple and straightforward to implement for missiles.