US 2026/0219372 A1 · HIGH PRECISION FAST SCANNING FMCW LIDAR

Abstract

A method of operating a light detection and ranging (LIDAR) system is provided that includes emitting a first laser beam at a first wavelength and a second laser beam at a second wavelength at a scanner, wherein a difference between the first wavelength and the second wavelength is less than a threshold wavelength. The method includes obtaining a first return signal and a second return signal based on the first laser beam and the second laser beam respectively reflecting off of a target. The method includes performing at least one Fast Fourier Transformation (FFT) based on the first return signal and the second return signal to obtain at least one FFT spectrum. The method includes determining a range of a target based on the at least one FFT spectrum.

Claims20

Dependent claims

A method of operating a light detection and ranging (LIDAR) system, comprising:

emitting a first laser beam at a first wavelength and a second laser beam at a second wavelength at a scanner, wherein a difference between the first wavelength and the second wavelength is less than a threshold wavelength;
obtaining a first return signal and a second return signal based on the first laser beam and the second laser beam respectively reflecting off of a target;
performing at least one Fast Fourier Transformation (FFT) based on the first return signal and the second return signal to obtain at least one FFT spectrum;
and
determining a range of a target based on the at least one FFT spectrum.

2 more elements

A light detection and ranging (LIDAR) system, comprising:

a first optical source to emit a first laser beam at a first wavelength;
a second optical source to emit a second laser beam at a second wavelength, wherein a difference between the first wavelength and the second wavelength is less than a threshold wavelength;
a scanner to:
receive the emitted first laser beam and the emitted second laser beam;
direct the emitted first laser beam and the emitted second laser beam at a target;
and
obtain a first return signal and a second return signal based on the first laser beam and the second laser beam respectively reflecting off of the target;
and
a signal processor to:
perform at least one Fast Fourier Transformation (FFT) based on the first return signal and the second return signal to obtain at least one FFT spectrum;
and
determine a range of the target based on the at least one FFT spectrum.

9 more elements

Dependencies are inferred from the claim text.

High precision fast scanning fmcw lidar

Life of this patent

High precision fast scanning fmcw lidar

Life of this patent

Abstract

Claims20