Corner reflectors pattern study with & without orthogonality errors

Abstract

Radar cross section (RCS) is one of the stealth signature by which an object/target can be identified at longer ranges. In stealth scenario it is always desirable to reduce the RCS. However sometimes it is also required to increase the RCS of certain targets in order to use them as a practice target for testing onboard weaponry, to detect our own targets/sail boats in the open sea. Corner reflectors are structures formed with two or three metal plates. Corner reflectors are designed to provide large mono static cross section over a wide range of frequencies and aspect angles. The corner reflector is used as an echo enhancement device on sail boats and other targets to improve their detect ability. The present paper deals with the study on the behavior of different types of corner reflectors with respect to different azimuth angles and frequencies. The study is also extended to determine the orthogonal error analysis of varies Corner Reflector that is the work emphasis the reduction in RCS due to orthogonality error between plates of reflectors occurred because of fabricated errors, mechanical stress, flatness. This study will be very much useful in assessing the target capability to cater to missile scenario. In order to do this analysis Matlab coding and Matlab GUI are used.