Abstract: Specific to the situation that the deep space exploration task's fewer launch opportunities and narrower launch window, and that bigger launch time deviation can cause more propellant consumption during the deep space probe’s orbit correction process, this paper present the application of multiple trajectory selection technology in the launch vehicle’s testing and launching process, and then provide a electrical implementation scheme, and at last the whole system test scheme for multiple trajectory selection technology is also given. Adopting the system testing technology based on requirement, aiming at all kinds of abnormal working conditions that may occur in the real application scenarios of the system, a number of system-wide test cases were designed, that ensures the successful application of multiple trajectory selection technology in launch mission.

Key words: Deep space exploration, Multiple trajectory selection, The whole system test, System Requirement, Test Case