TY - JOUR AU - Cohen, Leon PY - 2010 DA - 2010/06/17 TI - The Spread of a Noise Field in a Dispersive Medium JO - EURASIP Journal on Advances in Signal Processing SP - 484753 VL - 2010 IS - 1 AB - We discuss the production of induced noise by a pulse and the propagation of the noise in a dispersive medium. We present a simple model where the noise is the sum of pulses and where the mean of each pulse is random. We obtain explicit expressions for the standard deviation of the spatial noise as a function of time. We also formulate the problem in terms of a time-frequency phase space approach and in particular we use the Wigner distribution to define the spatial/spatial-frequency distribution. SN - 1687-6180 UR - https://doi.org/10.1155/2010/484753 DO - 10.1155/2010/484753 ID - Cohen2010 ER -