Target Interception with Cost-Based Observer

Alternative Title

Target interception with cost-based filters


Missile guidance and control is a very important problem for many military applications, both offensive and defensive. When directing a missile towards a target, there are many aspects which must be studied. This paper deals with one aspect of the missile-target problem: state estimation. A new estimation method is presented in this paper for use in the missile-target intercept problem. The novelty of the proposed approach is that the estimation process is posed as an optimal output tracking problem. The gains of the observer are obtained by minimizing an appropriate cost function. The design of the observer is first motivated with a general linear system and then developed for nonlinear systems. It is then applied to a missile intercept problem with bearings only measurement for a sinusoidal maneuvering target. Numerical results comparing the performance of proposed observer with that of extended Kalman filter are presented. These results demonstrate the suitability of the cost-based observer for missile guidance.

Meeting Name

AIAA Guidance, Navigation, and Control Conference and Exhibit 2006 (2006: Aug. 21-24, Keystone, CO)


Mechanical and Aerospace Engineering

Keywords and Phrases

Missile Control; Missile Guidance; Missile Intercept Problem; State Estimation; Guided missiles

Document Type

Article - Conference proceedings

Document Version


File Type





© 2006 American Institute of Aeronautics and Astronautics (AIAA), All rights reserved.

Publication Date

24 Aug 2006

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