Performance aspects of a network guided surface-to-air missile
Publish date: 2003-01-01
Report number: FOI-R--0948--SE
Pages: 61
Written in: English
Abstract
This work treats some problems related to guidance of surface-to-air missiles (SAMs) using target data from a network of sensors. We study the effects of limited network data rate and processing speed (time delays) as well as errors in the measurements, where the latter are modeled in terms of Gaussian noise. The study is carried out in the form of a number of simulations of different missile-target engagement scenarios. A simplified but realistic model of a generic two-stage SAM is used in which the overall dynamics are represented by two linear systems, one second order system for the short period lateral motion dynamics and one first order system for the actuator dynamics. The SAM is guided by a variant of proportional navigation. Several types of target paths are studied; low altitude constant velocity straight course, single high-g turn course and multiple high-g turns. In all these cases we study in particular the effect of using an (ideal) internal on-board target seeker during the final parts of the pursuit in order to determine values for a suitable hand-over range for switching from network based measurements to internal seeker based ditto.