Single step extension method for A ∗ algorithem used in stealth 3-dimensional route planning penetration

In order to apply differents kinds of route planning methods to stealth 3-dof route planning penetration process, the extension method of the single step in A ∗ algorithem is disscussed here. Especially, when comparative movement between aircraft and radar existing, the calculation of aircraft's RCS value is disscussed, which is solved by a fast caculation algorithem by the means of sphere reference frame's rotation. The numerical simulation demonstrates the mentioned methods validity.