3D ISAR Imaging Algorithm Based on Amplitude Monopulse Processing at W Band

Abstract

This paper introduces an inverse synthetic aperture radar (ISAR) imaging algorithm for performing high resolution three dimensional (3D) imaging of moving targets at millimeter wave (MMW). The algorithm takes full advantage of the available spatial modalities resulting from an amplitude monopulse antenna configuration designed to operate over the 92–96 GHz band. Using the simulated antenna patterns, this novel ISAR approach accurately estimates the 3D spatial locations of the scatterers in the scene and can operate robustly at relatively low signal-to-noise ratio (SNR) levels. The approach should be broadly useful for generating high resolution imagery in long range MMW monopulse tracking radars.