Atmospheric re-entry into the Martian atmosphere with variable lift control

A gliding type re-entry of a space capsule into the Martian atmosphere for softlanding with the minimum heat generation is investigated. A nonlinear filter which can be installed on-board is developed to estimate the unknown atmospheric parameter values of Mars in real-time. A stochastic control problem with state variables estimation is investigated for the re-entry capsule which is subject to random movements of the Martian atmosphere due to wind and wind gusts.