Clutter simulation for airborne pulse-Doppler radar

A method is described for sampling the surface clutter seen in the receiver of an airborne pulse Doppler radar. The clutter return is modelled as a two dimensional Gaussian random field with uncorrelated increments and is characterised by the mean clutter power of the field. The clutter signal in the radar receiver is also modelled as a random process and is obtained by sampling a realisation of the clutter return and convolving with the impulse response of the radar. The impulse response of the radar is described in terms of the ambiguity function of the receiver. Examples of realisations of the clutter signal are used to illustrate the key ideas.