Repository hosted by TU Delft Library

Home · Contact · About · Disclaimer ·
 

Optimal linear-quadratic missile guidance laws with penalty on command variability

Publication files not online:

Author: Weiss, M. · Shima, T.
Type:article
Date:2015
Publisher: American Institute of Aeronautics and Astronautics Inc.
Source:Journal of Guidance, Control, and Dynamics, 2 (February), 38, 226-237
Identifier: 537876
doi: DOI:10.2514/1.G000738
Keywords: Missiles · Quadratic programming · Design parameter · Essential features · Guidance commands · Interceptor missiles · Linear quadratic · Linear quadratic optimal control · Missile guidance laws · Traditional approaches · Observation, Weapon & Protection Systems · WS - Weapon Systems · TS - Technical Sciences

Abstract

This paper proposes a new approach to the derivation of homing guidance laws for interceptor missiles that makes use of linear-quadratic optimal control in a different manner than the traditional approaches. Instead of looking only for the minimization of the miss distance and the integral square of the guidance command, the new criterion penalizes also the "variability" of the guidance command. The solution has the familiar structure of traditional linear-quadratic guidance laws, of a zero-effort-miss term multiplied by a, possibly time-varying, gain. Still it differs in one essential feature: The navigation gain does not only depend on the time to go, but also on the total time of flight. The new guidance law also has an additional design parameter that can be profitably used to avoid acceleration saturation. © 2014 by the authors.