Radar sensor head for a radar system

A radar system, comprising:

• a broadband data line;
• at least one radar sensor head including at least one transmitting antenna for generating radar waves and at least one receiving antenna for receiving radar waves;
• a preprocessing unit for providing defined preprocessing of received data;
• an interface for connecting the radar sensor head to broadband data line;
• and
• a calibration data unit to at least partially calibrate the transmitting antenna and/or the receiving antenna, wherein calibration data for the transmitting antenna and the receiving antenna are storable using the calibration data unit;
• and
• at least one central control device to transmit data and to process received data;
• wherein the broadband data line is coupled between the at least one central control device and the interface of the at least one radar sensor head,
• wherein the at least one central control device includes a transformation unit for performing a Doppler FFT, a detection unit, and a second control unit,
• wherein the antennas are coupled through at least one antenna controller, which is coupled to an oscillator or a synthesizer for generating a carrier frequency of the radar waves,
• wherein the at least one antenna controller is coupled to an evaluation unit, which is coupled to the preprocessing unit,
• wherein the calibration data unit is coupled to a first control unit, which is coupled to the preprocessing unit,
• wherein the radar waves received by the at least one receiving antenna are convertible by an analog-to-digital converter of the evaluation unit into digital measuring data and are markable using at least one piece of time information, and wherein the digital measuring data are provided with a timestamp, and
• wherein the preprocessing unit and the calibration data unit are coupled to the interface, and
• wherein the preprocessing unit is configured to perform a range Fast Fourier Transform (FFT), wherein not all range bins are required due to an antialiasing filter, so that a resulting quantity of data is reduced and the FFT is usable simultaneously as a buffer for reducing peak data rates of the radar sensor head.

A method for manufacturing a radar sensor head, the method comprising:

• transmitting, via at least one transmitting antenna, radar waves, and receiving, via at least one receiving antenna, radar waves;
• providing, via a preprocessing unit, defined preprocessing of received data;
• providing, via an interface, connection of the radar sensor head to a broadband data line;
• and
• providing, via a calibration data unit, at least partial calibration of the transmitting antenna and/or the receiving antenna, wherein calibration data for the transmitting antenna and the receiving antenna are storable using the calibration data unit;
• wherein the antennas are coupled through at least one antenna controller, which is coupled to an oscillator or a synthesizer for generating a carrier frequency of the radar waves,
• wherein the at least one antenna controller is coupled to an evaluation unit, which is coupled to the preprocessing unit,
• wherein the calibration data unit is coupled to a first control unit, which is coupled to the preprocessing unit,
• wherein the radar waves received by the at least one receiving antenna are convertible by an analog-to-digital converter of the evaluation unit into digital measuring data and are markable using at least one piece of time information, and wherein the digital measuring data are provided with a timestamp,
• wherein the preprocessing unit and the calibration data unit are coupled to the interface, and
• wherein the preprocessing unit is configured to perform a range Fast Fourier Transform (FFT), wherein not all range bins are required due to an antialiasing filter, so that a resulting quantity of data is reduced and the FFT is usable simultaneously as a buffer for reducing peak data rates of the radar sensor head.