Differential geometric guidance command with finite time convergence using extended state observer

Abstract

For improving the performance of differential geometric guidance command (DGGC), a new formation of this guidance law is proposed, which can guarantee the finite time convergence (FTC) of the line of sight (LOS) rate to zero or its neighborhood against maneuvering targets in three-dimensional (3D) space. The extended state observer (ESO) is employed to estimate the target acceleration, which makes the new DGGC more applicable to practical interception scenarios. Finally, the effectiveness of this newly proposed guidance command is demonstrated by the numerical simulation results.

Keywords

missile guidance / differential geometric guidance command (DGGC) / finite time convergence (FTC) / extended state observer (ESO) / maneuvering targets

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