SIMULATION OF AN ACTIVE RADAR HOMING MISSILE UNDER PHASE-FRONT DISTORTION JAMMING

Abstract

ABSTRACTIn this paper we introduce a complete modelling and simulation of both target and missiletrajectories in one plane with and without the effect of phase front distortion jamming.Although the missile guidance is done in two independent perpendicular planes, thesimulation process in the other plane will be identical to that included in this model. Besides,the time variation of different variables in the missile radar guidance system are computedand displayed, to monitor the system performance along the missile trajectory starting fromthe missile launch up to the impact point. The impact is defined here as the time instant whenthe rate of variation of the relative speed measured by the missile radio fuse crosses the zerovalue. This is the same definition adopted by the radio fuse system. The missile-target rangeat this instant is calculated and displayed as the final miss-distance. Without such asimulation, it is not possible to evaluate an angular deception technique and optimize itsparameters; since the instantaneous effect of angle deception will be recovered by theproportional navigation guidance system and the only criterion of jamming effectiveness isthe final miss-distance [1]. The simulation program is written as an m-file to be run inMATLAB environment.