Radar sensor system comprising: - a defined number of RF components (10a... 10d); - wherein each of the RF components (10a... 10d) comprises in each case at least one antenna for transmitting and/or receiving radar waves and at least one antenna controller for operating the at least one antenna; and - a synchronization network that is connected to all the RF components (10a... 10d) and by way of which an operating frequency of all the RF components (10a... 10d) is synchronized; wherein geometric lengths of conductors of the synchronization network are short in comparison with a radar resolution of the radar sensor system , as a result of which a propagation time of signals within the synchronization network matches the radar resolution; wherein - a synchronization master is provided by all the RF components (10a... 10d) according to at least one defined criterion, wherein the synchronization master is not always the same one during an operating time of the radar sensor system , with the result that a rolling master functionality is provided and with the result that one of the RF components (10a...10d) is operated as the master RF component of the radar sensor system on a rolling basis, - wherein the synchronization master is selected from the RF components (10a... 10d) according to a temperature criterion, - and is selected in such a way that a defined phase difference between the synchronization master and synchronization slaves is provided, - wherein the synchronization master is selected in such a way that temperature differences between the RF components (10a... 10d) are kept equal to a defined extent - or the synchronization master is selected in such a way that the coldest RF component (10a... 10d) in each case is selected as the synchronization master. - a defined number of RF components (10a... 10d); - wherein each of the RF components (10a... 10d) comprises in each case at least one antenna for transmitting and/or receiving radar waves and at least one antenna controller for operating the at least one antenna; and - a synchronization network that is connected to all the RF components (10a... 10d) and by way of which an operating frequency of all the RF components (10a... 10d) is synchronized; wherein geometric lengths of conductors of the synchronization network are short in comparison with a radar resolution of the radar sensor system , as a result of which a propagation time of signals within the synchronization network matches the radar resolution; wherein - a synchronization master is provided by all the RF components (10a... 10d) according to at least one defined criterion, wherein the synchronization master is not always the same one during an operating time of the radar sensor system , with the result that a rolling master functionality is provided and with the result that one of the RF components (10a...10d) is operated as the master RF component of the radar sensor system on a rolling basis, - wherein the synchronization master is selected from the RF components (10a... 10d) according to a temperature criterion, - and is selected in such a way that a defined phase difference between the synchronization master and synchronization slaves is provided, - wherein the synchronization master is selected in such a way that temperature differences between the RF components (10a... 10d) are kept equal to a defined extent - or the synchronization master is selected in such a way that the coldest RF component (10a... 10d) in each case is selected as the synchronization master. <EOS>