Radar system and detection method

摘要

A radar system includes an arithmetic processing unit, which calculates the second derivative of the intensity of a reflected wave and determines whether a target is an upper structure or a vehicle, based on the second derivative. Alternatively, the arithmetic processing unit decomposes the waveform of the intensity of the reflected wave into frequency components and determines whether the target is an upper structure or a vehicle, based on the intensity of a predetermined frequency component.

主权项

1. A radar system for a vehicle, which is for determining a height of a target, comprising:
an oscillator that is configured to oscillate to generate a transmitted wave; a transmitting antenna that is configured to output the transmitted wave; a receiving antenna that is configured to receive a reflected wave from a target; an angle detector that is configured to reduce noise of the reflected wave based on an angle of incidence of the reflected wave on the receiving antenna; and an arithmetic processing unit that is configured to calculate an intensity of the reflected wave, in which the noise has been reduced, and to determine a relative distance to the target, wherein the arithmetic processing unit is configured to take a second derivative of each intensity associated with the relative distance, and to determine the height of the target in accordance with a number of the second derivatives of the intensities that are greater than a predetermined threshold value.