Recursive time-to-go estimation for homing guidance missiles

This paper addresses the problem of computing accurate time-to-go estimates, which is an important issue in implementing various optimal guidance laws developed for missiles of time-varying velocity. A recursive time-to-go computation method which updates the time-to-go in a noniterative way is pres...

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Bibliographic Details
Published in:IEEE transactions on aerospace and electronic systems 2002-01, Vol.38 (1), p.13-24
Main Authors: Tahk, Min-Jea, Ryoo, Chang-Kyung, Cho, Hangju
Format: Article
Language:English
Subjects:
Aerospace engineering
Computation
Degradation
Error compensation
Errors
Laws
Mathematical models
Missiles
Navigation
Nonlinear equations
Optimal control
Optimization
Proportional navigation
Recursive
Recursive estimation
Region 1
Terrorism
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Summary:This paper addresses the problem of computing accurate time-to-go estimates, which is an important issue in implementing various optimal guidance laws developed for missiles of time-varying velocity. A recursive time-to-go computation method which updates the time-to-go in a noniterative way is presented. The recursive method includes an error compensation feature which explicitly computes the time-to-go error produced by nonzero initial heading errors. The proposed method is simple and straightforward to implement for any missile velocity profiles. Various numerical examples show that the proposed method works effectively for optimal guidance laws as well as proportional navigation and augmented proportional navigation.
ISSN:0018-9251
1557-9603
DOI:10.1109/7.993225