Radar sensor system and method for supplying a frequency

A radar sensor system for transmitting and receiving radar waves, comprising:

• a first sub-sensor having at least one first antenna for transmitting and receiving radar waves, and at least one first antenna control configured to operate the at least one first antenna;
• at least one second sub-sensor having at least one second antenna for transmitting and receiving radar waves, and at least one second antenna control configured to operate the at least one second antenna;
• a frequency-generating device having at least one clock pulse generator configured to generate a usable frequency;
• and
• a control unit configured to actuate and control the first antenna control, the at least one second antenna control, and the frequency-generating device;
• wherein the frequency-generating device has a first clock pulse generator and at least one second clock pulse generator, the first clock pulse generator and the at least one second clock pulse generator being connectable, via at least two multiplexers, to the at least one first antenna control and to the at least one second antenna control, for a supply of the usable frequency in each case.

A method for supplying a usable frequency, for a radar sensor system, the method comprising the following steps:

• supplying, by a first clock pulse generator, a usable frequency, via at least two multiplexers disposed in parallel, to at least one first antenna control and at least one second antenna control;
• in the event of a defect in the first clock pulse generator, supplying, by at least one second pulse generator, the usable frequency, the at least one second pulse generator being connectable via a control unit by way of the at least two multiplexers situated in parallel, to the at least one first antenna control and the at least one second antenna control;
• and
• in the event of a defect of one of the two multiplexers, supplying the usable frequency by the first clock pulse generator and/or by the at least one second clock pulse generator, via at least another one of the multiplexers, to the at least one first antenna control or the at least one second antenna control.