ABSTRACT
Interceptor systems for missile defense engagements, by virtue of their mission objectives, demand extremely accurate performance from all their components. This exacting requirement in turn needs guidance, control, and estimation systems that will guarantee intercept against highly nonlinear and complex target maneuvers or in seek-and-destroy missions. Therefore, careful attention should be paid to the development of guidance laws and control strategies that go into
CONTENTS
5.1 Introduction ................................................................................................ 157 5.2 Body-Based IGC Formulation .................................................................. 160
5.2.1 Equations of Motion ...................................................................... 160 5.2.2 Cost Function.................................................................................. 162 5.2.3 Body-Based IGC Results ............................................................... 163
5.2.3.1 Weight Sensitivity ........................................................... 164 5.2.3.2 Discussion of Missile Physics ........................................ 166
5.3 Velocity-Based IGC Formulation ............................................................. 167 5.3.1 Missile IGC Design in Vertical Plane .......................................... 167
5.3.1.1 Results ............................................................................... 169 5.3.2 Location of PIP ............................................................................... 172
5.3.2.1 Intercept Geometry ......................................................... 172 5.3.2.2 Approximate Solutions ................................................... 174
5.3.3 Extension to Three Dimensions ................................................... 175 5.3.3.1 Results ............................................................................... 175
5.4 Sliding Mode Integrated Guidance and Control ................................... 177 5.4.1 Effect of Target Acceleration on PIP Heading Error ................. 178 5.4.2 α-Plane SMIGC Control Law ........................................................ 180 5.4.3 β-Plane SMIGC Control Law ........................................................ 184
5.5 SMIGC Results and Analysis ................................................................... 186 5.6 Summary and Conclusions ...................................................................... 191 References ............................................................................................................. 191
the interceptors. There has been a lot of work in the published literature on missile guidance, control, and estimation problems [1,4,6,8,14].
