Zero-miss-distance guidance law based on line-of-sight rate measurement only

Abstract This paper presents a high performance, simple and robust guidance method which utilizes line-of-sight (LOS) rate measurement only to yield zero-miss-distance against highly maneuvering targets. The novel guidance law adopts the basic framework of proportional navigation guidance, yet instead of using an acceleration command which is proportional to the measured LOS rate, the acceleration command is applied proportionally to an equivalent LOS rate. The equivalent LOS rate is a linear combination of the measured LOS rate and higher-order LOS rate derivatives, which are estimated from the noisy LOS rate measurement using a Kalman–Bucy filter. A considerable part of this paper is devoted to a comprehensive simulation study of the new guidance law. Deterministic simulations and Monte Carlo analyses show that excellent performance is obtained against highly maneuvering targets.

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