TAFCO goes to the first edition of the Spanish National Congress of R&D in Defence and Security DESEi+d 2013, held on 6 and 7 November at the Polytechnic University of Madrid, presented the paper “Doppler RCS Spectral Density Applied to Military Environments”, where it is emphasized its importance.
The Radar Cross Section (RCS) of a target determines how detectable the object is to a radar system. Because most of the targets usually are moving, the EM signal suffers a frequency operation shift, that can also be interpreted by the radar system, so it is possible detect the speed and direction. If the object has movable parts such as the propeller of an airplane or the rotor of a helicopter, the EM signal undergoes a added displacement frequency around the central frequency, usually called Doppler RCS Spectral Density or Micro-Doppler effect. The previous analysis of this type of signals is crucial in the development of improved detection systems.
http://catedraisdefe.etsit.upm.es/2013/05/20/primer-congreso-nacional-de-id-en-defensa-y-seguridad/