In the design of radar receiver systems a suitable simulation environment is useful. In this work a model of a radar receiver (with both analogue and digital parts in the same model) has been extended with typical radar scenarios. This makes it a complete model of a radar receiver where both the performance of the system and the parts of the radar receiver; i.e. RF parts; A/D converter and digital filters can be evaluated. The simulations are done in Agilents software Advanced Design System (ADS) with some parts of the model using ADS models and some parts as Matlab models implemented in ADS.