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Composite Guidance for Impact Angle Control Against Higher Speed Targets

Ghosh, Satadal and Ghose, Debasish and Raha, Soumyendu (2016) Composite Guidance for Impact Angle Control Against Higher Speed Targets. In: JOURNAL OF GUIDANCE CONTROL AND DYNAMICS, 39 (1). pp. 98-117.

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Official URL: http://dx.doi.org/10.2514/1.G001232

Abstract

In the literature, the impact angle control problem has been addressed mostly against lower speed or stationary targets. However, in the current defense scenario, targets of much higher speeds than interceptors are a reality. Moreover, approaching a higher speed target from a specified angle is important for effective seeker acquisition and enhanced warhead effectiveness. This paper proposes a composite proportional navigation guidance law using a combination of the standard proportional navigation and the recently proposed retroproportional navigation guidance laws for intercepting higher speed nonmaneuvering targets at specified impact angles in three-dimensional engagements. An analysis of the set of achievable impact angles by the composite proportional navigation guidance law is presented. It is shown that there exists an impulse bias that, when added to the composite proportional navigation guidance command, expands this set further by reversing the direction of the line-of-sight angular rotation vector. A bound on the magnitude of the bias is also derived. Finally, an implementation of this impulse bias, in the form of a series of pulses, is proposed and analyzed. Simulation results are also presented to support the analysis.

Item Type: Journal Article
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Additional Information: Copy right for this article belongs to the AMER INST AERONAUTICS ASTRONAUTICS, 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA
Department/Centre: Division of Information Sciences > Supercomputer Education & Research Centre
Division of Mechanical Sciences > Aerospace Engineering (Formerly, Aeronautical Engineering)
Date Deposited: 26 Mar 2016 06:01
Last Modified: 26 Mar 2016 06:01
URI: http://eprints.iisc.ernet.in/id/eprint/53432

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