Prediction of scattering cross-section reductions due to plate orthogonality errors in trihedral radar reflectors

A method is presented for the determination of the reduction in scattering cross-section levels due to angular errors between plates in trihedral radar corner reflectors. The method applies to any regular reflector shape and for any incident ray direction in the reflector main beam zone; it owes its viability to a recently developed technique for determining trihedral reflector effective areas. The analysis is not exact, but gives good agreement with experimental results for a wide range of reflector sizes.