Fabrication of RADAR Absorbing Composite Materials for defense application

Abstract

The term RADAR was coined by the United States Navy in 1940 as an acronym for RAdio Detec tion AndRanging. It is an object detection system that measures the relative position and velocity of objects using electromagnetic waves. It was created prior to and during World War II. This al lowed military forces to respond to incoming enemy vehicles much faster and more effectively. A radar system is comprised of a transmitter that sends out Electro-Magnetic (EM) waves in a specific frequency band, commonly in the radio or microwave range. A receiving antenna detects reflected waves, which are then processed to determine the object’s position. The Radar Cross-Section of an object refers to how much it reflects or scatters radio waves (RCS). The RCS is a property of object size, shape, and material and is defined ratio of incident and reflected EM wave energy.