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For the entry guidance based on a nominal trajectory, trajectory tracking is an important part, by which the nominal trajectory is followed and several constraints can be observed. In order to reject disturbance and achieve good tracking performance in trajectory tracking, a finite-time trajectory tracking method is presented. Utilizing the differential flatness theory, a linear tracking error system...
In terminal guidance phase, only partial information concerning the interception geometry is available. To intercept a target in specified direction under this condition, an impact angle constrained guidance law is proposed based on the dynamic output feedback. The guidance law doesn't use the rate of line-of-sight angle, and can guarantee convergence speed of the closed-loop system. Utilizing the...
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