APPLICATION OF ANGULAR-CORRELATION FUNCTION OF CLUTTER SCATTERING ANDCORRELATION IMAGING IN TARGET DETECTION

We study a correlation imaging method for the detection of targets emb edded in clutter environment. The result is based on Monte Carlo simul ations, In the simulations, the targets are embedded in a medium consi sting of randomly distributed small scatterers and the scattered field s are calculated, The scattered fields are then used for image process ing. The incident and scattered directions are chosen to avoid the ''m emory effect'' of clutter scattering. It has been shown that the corre lation function of scattered fields due to clutter is smalt if the mem ory effect is avoided. The correlation imaging is to calculate the cor relation function with focusing on desired locations. Therefore, it ca n suppl ess clutter and have finer resolution, The angular correlation (ACF) imaging is used for circular synthetic aperture radar (SAR) and frequency angular correlation (FACF) imaging is used for linear SAR. Numerical results show improvement over the conventional field imaging .