Radar cross section model optimisation using genetic algorithms

Many missile-target simulation systems use random numbers to mimic the effects of a fluctuating target radar cross section (RCS) in an attempt to minimise simulation times. In this paper a genetic algorithm is used to optimise the complexity of a point-scatterer model with a realistic radar cross section, ultimately allowing real measured data to be used in simulations. The performance of the genetic algorithm is compared against an iterative optimisation method and a known optimum solution. The radar cross section models described in this paper are designed to be used with a synthetic homing guidance missile in 3-dimensional virtual engagement scenarios. The models allow measured RCS data to be combined with synthetic RCS details, creating a realistic target radar cross section with 4/spl pi/ steradian coverage.