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Generalized linear solution of proportional navigation

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2 Author(s)
U. S. Shukla ; Indian Inst.of Sci., Bangalore, India ; P. R. Mahapatra

Proportional navigation (PN) equations are not solvable in closed form. Linearized solutions have been widely used for PN system analysis and design, but these are based on overly restrictive assumptions regarding the initial geometry, and are valid only for near-tail-chase pursuits. A generalization of the linearized approach is presented which yields more-accurate estimates of pursuer lateral acceleration than the classical linear solutions as verified by comparison with `exact' numerical solutions. Further, the solution is applicable over a much wider range of engagement geometries. The treatment is based on a closed-form quasilinearized solution of the PN equations followed by the small-angle approximation only to line-of-sight (LOS) angle rate

Published in:

IEEE Transactions on Aerospace and Electronic Systems  (Volume:24 ,  Issue: 3 )