ABSTRACT

Guidance laws and autopilots are generally developed in the continuoustime (CT) domain. Such systems act upon CT signals and may include exact ltered differentiation and integration. For example, the classical proportional navigation guidance (PNG) law processes ltered line-of-sight (LOS)

CONTENTS

13.1 Introduction ................................................................................................477 13.2 Preliminary Concepts ............................................................................... 481

13.2.1 Operators in DT Domain .............................................................. 481 13.2.2 Relationships between DT and CT Systems .............................. 482 13.2.3 Principal Discretization Methods ...............................................483