A cascaded radar system comprising: a first radar system-on-a-chip, SOC, including a first plurality of receive channels and a first signal processor component coupled to the first plurality of receive channels to perform a first initial portion of signal processing for object detection on digital beat signals generated by the first plurality of receive channels; a second radar SOC including a second plurality of receive channels and a second signal processor component coupled to the second plurality of receive channels to perform a second initial portion of signal processing for object detection on digital beat signals generated by the second plurality of receive channels; and a processing unit coupled to the first radar SOC and the second radar SOC to receive first results of the first initial portion of signal processing and second results of the second initial portion of signal processing, the processing unit operable to perform a remaining portion of the signal processing for object detection using the first results and the second results; wherein the first initial portion of signal processing includes computing range fast Fourier transforms, FFTs, and Doppler FFTs on the digital beat signals generated by the first plurality of receive channels to generate per range Doppler slices for each receive channel in the first plurality of receive channels, and the second initial portion of signal processing includes computing range FFTs and Doppler FFTs on the digital beat signals generated by the second plurality of receive channels to generate per range Doppler slices for each receive channel in the second plurality of receive channels; and wherein the remaining portion of the signal processing includes computing angle FFTs using per range Doppler slices generated by the first radar SOC and the second radar SOC. a first radar system-on-a-chip, SOC, including a first plurality of receive channels and a first signal processor component coupled to the first plurality of receive channels to perform a first initial portion of signal processing for object detection on digital beat signals generated by the first plurality of receive channels; a second radar SOC including a second plurality of receive channels and a second signal processor component coupled to the second plurality of receive channels to perform a second initial portion of signal processing for object detection on digital beat signals generated by the second plurality of receive channels; and a processing unit coupled to the first radar SOC and the second radar SOC to receive first results of the first initial portion of signal processing and second results of the second initial portion of signal processing, the processing unit operable to perform a remaining portion of the signal processing for object detection using the first results and the second results; wherein the first initial portion of signal processing includes computing range fast Fourier transforms, FFTs, and Doppler FFTs on the digital beat signals generated by the first plurality of receive channels to generate per range Doppler slices for each receive channel in the first plurality of receive channels, and the second initial portion of signal processing includes computing range FFTs and Doppler FFTs on the digital beat signals generated by the second plurality of receive channels to generate per range Doppler slices for each receive channel in the second plurality of receive channels; and wherein the remaining portion of the signal processing includes computing angle FFTs using per range Doppler slices generated by the first radar SOC and the second radar SOC.