A method performed by a radar simulator, the method comprising: accepting environmental response data from an electromagnetic simulator, the environmental response data representing information from multiple propagation paths within a simulated environment; generating, by an interface module of the radar simulator, channel response data based on the environmental response data, the channel response data comprising complex data for individual pulses of a simulated radar signal (110, 112) and for at least one transmit-receive channel pair of a simulated radar system, the complex data representing an integrated response of the simulated radar system to quantizations of the multiple propagation paths within the simulated environment, the interface module weighting the quantizations of the multiple propagation paths by a complex radiation pattern of a transmitting subarray and receiving subarray of an antenna array of the simulated radar system that define the transmit-receive channel pair and applying a phase shift to the environmental response data based on a position of the transmitting subarray or receiving subarray, the complex radiation pattern including a complex gain pattern for a direction of departure or a direction of arrival of each propagation path of the multiple propagation paths; performing operations associated with a transceiver of the simulated radar system to generate radar samples based on the channel response data; and performing operations associated with a processor of the simulated radar system to generate a radar report based on the radar samples, the radar report representing performance of the simulated radar system within the simulated environment. accepting environmental response data from an electromagnetic simulator, the environmental response data representing information from multiple propagation paths within a simulated environment; generating, by an interface module of the radar simulator, channel response data based on the environmental response data, the channel response data comprising complex data for individual pulses of a simulated radar signal (110, 112) and for at least one transmit-receive channel pair of a simulated radar system, the complex data representing an integrated response of the simulated radar system to quantizations of the multiple propagation paths within the simulated environment, the interface module weighting the quantizations of the multiple propagation paths by a complex radiation pattern of a transmitting subarray and receiving subarray of an antenna array of the simulated radar system that define the transmit-receive channel pair and applying a phase shift to the environmental response data based on a position of the transmitting subarray or receiving subarray, the complex radiation pattern including a complex gain pattern for a direction of departure or a direction of arrival of each propagation path of the multiple propagation paths; performing operations associated with a transceiver of the simulated radar system to generate radar samples based on the channel response data; and performing operations associated with a processor of the simulated radar system to generate a radar report based on the radar samples, the radar report representing performance of the simulated radar system within the simulated environment.