Polynomial based Impact Time and Impact Angle Constrained Guidance. Issue 1 (2022)

• Record Type: Journal Article
• Authors: Surve, Prajakta; Maity, Arnab; Kumar, Shashi Ranjan
• Is Part Of: IFAC-PapersOnLine. Volume 55:Issue 1(2022)
• Page Start: 486
• Page End: 491
• Publication Date: 2022
• Subjects: Impact time -- impact angle -- terminal constraints -- LOS shaping -- dynamic inversion; Automatic control -- Periodicals; 629.805
• DOI: 10.1016/j.ifacol.2022.04.080
• Languages: English
• ISSNs: 2405-8963

Abstract

Abstract: A guidance strategy is proposed in this paper that ensures near-zero miss distance along with simultaneous control over the direction and time of impact. The line-of-sight angle between the interceptor and the target is shaped as a nonlinear polynomial function of relative range between them. This polynomial function provides the desired line-of-sight orientations to achieve the mission objectives. The coefficients of the line-of-sight polynomial are obtained by subjecting it to the boundary conditions that adhere to the desired terminal constraints. A controller is designed using the nonlinear dynamic inversion control technique to track the reference flight path directions derived using the desired line-of-sight orientations. The simulation results obtained from various numerical simulations validate the efficacy of the proposed guidance law.