Single laser LIDAR system
AssigneeDSCG Solutions, Inc.
InventorsRichard Sebastian, Kendall Belsley
Life of this patent
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Abstract
In one general aspect, a non-transitory computer-readable storage medium storing instructions that when executed cause one or more processors to perform a process. The process can include producing emitted electromagnetic radiation based on a frequency pattern and receiving reflected electromagnetic radiation reflected from an object. The process can include defining combined frequency data based on a frequency of the emitted electromagnetic radiation and a frequency of the reflected electromagnetic radiation. The process can also include defining a set of spectral bins, based on a Fourier transform, in a frequency domain based on the combined frequency data, and can include identifying a subset of the set of spectral bins.
Claims22
A non-transitory computer-readable storage medium storing instructions that when executed cause one or more processors to perform a process, the process comprising:
- producing emitted electromagnetic radiation based on a frequency pattern;
- receiving reflected electromagnetic radiation reflected from an object;
- defining combined frequency data based on a frequency of the emitted electromagnetic radiation and a frequency of the reflected electromagnetic radiation;
- and
- defining a set of spectral bins, based on a Fourier transform, in a frequency domain based on the combined frequency data,
- wherein the process further comprises:
- identifying a subset of the set of spectral bins;
- and
- producing time series data based on the subset of the set of spectral bins using an inverse Fourier transform.
An apparatus, comprising:
- a laser configured to produce emitted electromagnetic radiation based on a frequency pattern;
- a receiver configured to receive reflected electromagnetic radiation reflected from an object;
- and
- an analyzer configured to define combined frequency data based on a frequency of the emitted electromagnetic radiation and a frequency of the reflected electromagnetic radiation, the analyzer configured to iteratively perform spectral analysis on the combined frequency data until a beat frequency is determined based on a threshold condition,
- wherein the spectral analysis includes producing time series data based on a set of spectral bins using an inverse Fourier transform.
An apparatus, comprising:
- a laser configured to produce emitted electromagnetic radiation based on a frequency pattern;
- a receiver configured to receive reflected electromagnetic radiation reflected from an object;
- an analyzer configured to define combined frequency data based on a frequency of the emitted electromagnetic radiation and a frequency of the reflected electromagnetic radiation, the analyzer configured to iteratively perform spectral analysis on the combined frequency data until a beat frequency is determined based on a threshold condition,
- wherein the spectral analysis includes defining phase angle data based on time series data.
A method, comprising:
- defining combined frequency data based on a frequency of electromagnetic radiation emitted toward an object from a laser and a frequency of electromagnetic radiation reflected from the object;
- defining a set of spectral bins based on the combined frequency data;
- identifying a subset of the set of spectral bins;
- producing time series data based on the subset of the set of spectral bins
- defining phase angle data based on the time series data;
- and
- modifying the combined frequency data based on the phase angle data.
Dependencies are inferred from the claim text.