Active Cancellation Algorithm for Radar Cross Section Reduction

Abstract

Modern components for signal processing and high speed computers make it possible to achieve radar visibility reduction (Stealth Technology), that requires reduce the radar cross section (RCS) of an aircraft or the fighting's systems because it seems to be on the enemy's radar detection capabilities. To achieve this goal, this research proposed an Active cancellation algorithm for radar cross section reduction using MATLAB, digital radio-frequency memory (DRFM), and phased array technology to generate the desired signal to cancel the reflected radar returns. The algorithm depends on a pre calculation approach in which an omni direction RCS, clutter, and noise databases generated in advance. Signal processing system function analysis parameter of the measured radar signal, and then find the corresponding echo data (amplitude and phase etc …) in the target RCS database through real-time amendment to generate out of phase echo. Through the establishment of a target scattering field with the abolition of a coherent signal in the direction of the radar system detection, the radar receiver stays in empty pattern synthesis. The result achieved by the proposed method improves visibility reduction by 50%.