An improved model for computing the scattering amplitude coefficient of the chaff cloud

Scattering amplitude coefficient of the chaff cloud is still an open problem. In this paper, an improved physical model was proposed to facilitate the calculation of the scattering amplitude matrix of the chaff cloud. In which the chaff cloud is random distribution, the chaff is random orientated, the incident and the scattering direction are respectively random polarization and the direction of incident and scattering are also random, moreover, a novel numerical integration method was proposed to guarantee the high efficiency and accuracy of the scattering amplitude matrix. The correctness of the new algorithm and the date obtained in this paper is ensured by comparing with the date of Monte Carlo method, and the higher efficiency and accuracy are also proved in this paper.