RADAR SENSOR FOR VEHICLE COLLISION PREVENTION Russian patent published in 2021 - IPC G01S13/93 

FIELD: radar collision avoidance systems.

SUBSTANCE: invention relates to radar collision avoidance systems for a vehicle and is intended to improve the safety of a vehicle. The radar sensor for preventing collisions of a vehicle contains a transmission path including a signal generator connected through a power amplifier to a transmitting antenna, and a multi-channel receiving path, consisting of a receiving antenna and three subchannels. Each of the subchannels includes a low-noise amplifier, a mixer, the inputs of which are connected to a low-noise amplifier and a local oscillator, and the output to the input of an analog-to-digital converter connected to a device for processing the reflected signal and calculating radiation patterns in the elevation and azimuth planes. The transmitting and receiving antennas are multichannel in the form of stripline phased antenna arrays. The phase centers of the transmitting antennas are shifted relative to each other in the azimuthal plane by (N-1)×λ/2, and the phase centers of the receiving antennas are shifted by λ/2, where N is the number of receiving channels, λ is the wavelength. The first and second receiving channels are used to obtain a difference signal along the azimuthal plane, and the first and third receiving channels form a difference channel along the elevation plane.

EFFECT: increasing the accuracy of determining the angular coordinates of the target in conditions when visual observation is difficult, and increasing the information content when detecting objects on the road, measuring their coordinates, assessing the overall dimensions and classification.

1 cl, 1 dwg