Anechoic chamber evaluation using the matrix pencil method

A new method for evaluation of an anechoic chamber using the matrix pencil method is presented. A signal measured between two antennas placed in an an echoic chamber is sliced into small frequency intervals and is processed us ing the matrix pencil method. In each interval, the measured signal is deco mposed into its propagating-wave components, which correspond to a direct p ropagation between two antennas and reflected propagating waves from absorb ing walls, The ratio of amplitudes of the reflected wave components with re spect to the direct path propagation gives a new measure of quality factor for an anechoic chamber.