抄録
Collisions between Asteroids and Earth sometimes occur and bring severe damage to human society. Some asteroid deflection techniques to avoid the collisions have been suggested by astronomers and scientists. We discuss these techniques, especially kinetic impactor. In this paper, we think about the improvement of the kinetic impactor by using the concept of Impact Geometry Map which visualizes the maximum change of the asteroid’s orbital energy by an impact. This report suggests a method to increase the change in the orbital energy of the asteroid by using locally optimal thrust vectoring and the Impact Geometry Map. We also use time differentiation of Impact Geometry to make an efficient spacecraft orbit. Additionally, we describe a global trajectory optimization method of spacecraft to increase Impact Geometry.
