Modeling and simulation of chaff cloud interference to SAR

As a typical passive jamming, chaff cloud have a strong moderating effect on various radar systems. It´s also one of typical interference to synthetic aperture radar (SAR). In order to study the impact of chaff cloud on the SAR, based on mathematical expression of SAR reflection deduce the formulation of single chaff reflection, obtained that there is the incoherent Gaussian white noise interference with all band in the azimuth direction. Then from single chaff reflection mathematical expression deduce the chaff cloud mathematical expression, obtained that there is the coherent interference in the radial direction. Give the calculation method of jam power. At last show the simulation result of chaff cloud interfere.