Estimation of Monostatic Radar Cross Section of Chaff Particles Using the Sequential Loading Method

This study presents an efficient and reliable approach to rapidly estimate the scattering properties of chaff particles. This approach adopts the sequential loading method (SLM) which is an iterative post-processing technique that is capable of predicting the new solution of different chaff particles without having to reuse any expensive computational electromagnetic (CEM) tools. The SLM operates solely on the initial solution of a single chaff particle for which the admittance matrix is previously calculated, only once, via the moment method. The calculation of the spatially averaged radar cross section (RCS) of the chaff particles contained in the RR-129 cartridge is successfully obtained by including both reradiation and conductive power losses. Also, a comparison between the estimated results and measured ones is attempted for a single chaff particle of length 5.08 cm.