A chaff cloud modelisation

The objective of this paper is to present a Chaff cloud Radar Cross Section (RCS) model, able to characterize battle ship autoprotection systems under operational configurations. This software, called SILEM, has been developed for French Ministry of Defence (DGA). After reviewing the particularities of chaff clouds, this paper describes SILEM components to calculate decoy placement, chaff cloud evolution and dispersion, and radar scattering by dipoles.