Vehicle-mounted radar system, blind spot detection method and vehicle

A vehicle-mounted radar system, comprising:

• an antenna array comprising a plurality of transmitting antennas and a plurality of receiving antennas, wherein the transmitting antennas are configured to transmit electromagnetic waves, the receiving antennas are configured to receive echo signals, and the echo signals are signals of the electromagnetic waves reflected back from a target;
• a phase shifter array comprising a plurality of transmitting phase shifters and a plurality of receiving phase shifters, wherein the transmitting phase shifters are connected with corresponding transmitting antennas, the receiving phase shifters are connected with corresponding receiving antennas, the transmitting phase shifters are configured to adjust a beam direction of the electromagnetic waves according to a driving condition of a vehicle so that the electromagnetic waves are transmitted to an actual blind spot, and the receiving phase shifters are configured to adjust a beam direction of the echo signals so that the beam direction of the echo signals is same as the beam direction of the electromagnetic waves;
• and
• a data processing unit comprising a radar chip, wherein the radar chip is connected with the transmitting phase shifters and the receiving phase shifters respectively, and the radar chip is configured to generate the electromagnetic waves, process the received echo signals to obtain echo information, and transmit the echo information to a vehicle-machine system;
• wherein the radar chip comprises a microwave circuit and a digital processing circuit;
• wherein:
• the microwave circuit comprises a waveform generator, a signal separator, a power amplifier, a low noise amplifier, a mixer, an intermediate frequency amplifier and an analog-to-digital converter, wherein the waveform generator, the signal separator and the power amplifier are connected in sequence;
• the low noise amplifier, the mixer, the intermediate frequency amplifier, the analog-to-digital converter and the digital processing circuit are connected in sequence;
• and the signal separator is connected with the mixer;
• and
• the digital processing circuit comprises one-dimensional Fourier transform, two-dimensional Fourier transform, peak search, constant false alarm rate and angle calculation.