Simulation of Altitude Modification in Trajectory Programming Based on Kalman Filter
Feng Yu · Jisuanji fangzhen · 2005
The integration of terrain following/terrain avoidance is a new technique of low altitude penetration.And the trajectory programming technology is the important base of the design of control laws.In the course of flight exist various error factors which will affect the performance of the trajectory.A Kalman filter is designed to modify the acquired altitude of aircraft in real-time, thus comparatively accurate altitude information could be provided so as to increase the safety coefficient of aircrafts.The status model and observation model of the system are built and simulation is finished with the given initial values and variance matrix of the noises.The simulation results indicate that the Kalman filter is feasible.It greatly reduces the effects of combined navigation system error models.