Abstract: A method for computer aided simulation of complete radar systems under evaluation of the instantaneous power and frequency information comprises the steps of providing a simulation signal representing the instantaneous power spectrum of the transmitter modifying said signal in accordance with the propagation and spreading path to be simulated and in addition modifying said signal in accordance with preselected target properties, modifying the previously modified signal in accordance with particular properties characteristic of the receiver and associated components to be simulated, such as amplifier characteristics, filters, mixers, Doppler stages, analog-to-digital conversion and calculating statistical moments of the first and second order of the resulting signal such as the expectancy value and its variance and indicating the same.