Rafael Yanushevsky's Modern Missile Guidance PDF

By Rafael Yanushevsky

Книга glossy Missile information sleek Missile GuidanceКниги Наука. Техника Автор: Rafael Yanushevsky Год издания: 2007 Формат: pdf Издат.:CRC Страниц: 240 Размер: 2,7 ISBN: 1420062263 Язык: Английский0 (голосов: zero) Оценка:Written by way of a professional with greater than 30 years of expertise, smooth Missile information comprises new analytical effects, received via the writer, that may be used for research and layout of missile suggestions and keep watch over structures. This e-book covers not only new tools neither is it in simple terms a compilation of older tools, even though it contains either. The publication discusses, in a logical development, with its transparent elucidation of the information legislation, the complete box from missile dynamics to modeling and checking out missile information and keep watch over platforms. not like present books that debate extremely simple and infrequently unrealistic information process types, this publication provides missile information types that describe extra exactly the dynamics of the missile flight keep an eye on approach, making analytical effects more beneficial in perform. The research of missile assistance procedure types within the time-domain and within the frequency-domain permits the new release of alternative advice legislation that complement one another. Taking smooth, rigorous process that ends up in enhanced functionality in missile counsel functions, the e-book examines new assistance legislation, and corresponding algorithms for producing and trying out those legislation, and contains potent new software program courses constructed through the writer. the writer presents an leading edge presentation of the theoretical features of contemporary missile suggestions that rather probably can't be present in the other publication. It delineates new principles that, as soon as crystallized, will considerably enhance missile structures functionality.

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Extra resources for Modern Missile Guidance

Sample text

It will be used to determine the miss distance for a wide class of target maneuvers. 3 FREQUENCY DOMAIN ANALYSIS First we consider the fourth-order flight control system, which is widely used in the initial stage of analysis and design. Then the obtained expressions will be generalized for the n-th order system. 34 Modern Missile Guidance Miss y(tF) Target Maneuver .. aT = yT – 1 S2 . λ λ 1 vcl t go y S G1(s) Seeker Dynamics Nvcl G2(s) .. 6 Missile guidance model. 6. Here, missile acceleration aM is subtracted from target acceleration aT , and the result is integrated to obtain the relative separation between a missile and target y, which at the end of flight tF is the miss distance y(tF).

The more rigorous formulation of the problem of nullifying the LOS rate was given earlier in this chapter, where PN was presented as a control problem. Commanded acceleration was considered as a control and the LOS and its derivative were chosen as the state variables. In a different way the PN guidance law was considered as a control action in Reference [1]. The 1960s were marked by significant results in optimal control theory. It was shown that linear controls are optimal in the case of systems characterized by linear differential equations and a 18 Modern Missile Guidance quadratic functional as their performance index [3].

The goal of guidance is to reduce the miss distance to the smallest feasible amount. Target maneuvering plays a major role in determining missile system performance. The miss distance due to a step target maneuver is the miss step response, similar to the well-known time-domain characteristic in control theory. Below we obtain analytical expressions of miss distance for simple models of PN guidance systems. Unfortunately, in the time domain the closed-form solutions cannot be obtained for high-order models realistically reflecting autopilot and airframe dynamics.

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