Height Estimation of Atmospheric Reentry of Vehicle Tracked With LFM Waveforms
M. A. Murzova, Vladimir E. Farber, B. A. Levitan, S.A. Topchiev · 2021
Conditions for the moment of atmospheric reentry of vehicles tracked with chirp radar are studied in this paper. A Kalman filter is applied to estimate the position, velocity and acceleration of the vehicle moving from above the atmosphere and through the atmosphere. While the vehicle moves above the atmosphere the Kalman filter calculates estimates of position and velocity. Detecting the moment of atmospheric reentry is obtained with taking into account a residual which is equal to a difference between measurement of range and predicted range. This residual is used to estimate the height of atmospheric reentry.