Abstract: It is trajectory correction maneuver (TCM) that is absolutely important and has to be solved as the key problem during the EarthtoMars trajectory in the Mars exploration. Firstly, the B plane reference frame based on the target planet and target parameters are introduced. Then formulas of B plane parameters are deduced. In succession, it is validated that linear relationship exits between target parameters and the velocity correction value. Meanwhile the corresponding arithmetic flow chart is proposed. In the next place, taking the rational velocity maneuver error and the orbit measurement error into account, a control strategy containing three main TCMs, one contingent TCM and one backup TCM is proposed and is proved possible and feasible by the simulation eventually.

Key words: Mars exploration, trajectory correction maneuver, Bplane