Radar cross section

The technological evolution in signal processing that has been made in last decades led to improvements in radar performances. Increasing the radar range by improving its sensitivity has been made by the designers of aircraft and other military systems to try to decrease the radar cross section of these types of equipment. The radar cross section is a matter of survivability for an aircraft and, for this, any measure designed to decrease this important parameter has to be taken into consideration. This article deals with defining the radar cross section, presenting some method for reduction and focuses on analyzing some of the features of radar absorbing materials with variable conductivity.