Systems and methods for chirp linearization using partial field-of-view (FOV) as a reference reflector
US12306351B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 12, 2021 |
| Grant date | May 20, 2025 |
| Priority date | — |
| Expiry date | Feb 9, 2044 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S17/34
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Disclosed herein are systems and methods for linearizing frequency chirp in a frequency-modulated continuous wave (FMCW) coherent LiDAR system. Exemplary methods can include generating a continuous wave laser signal having a frequency characteristic, in which the frequency characteristic can include a frequency chirp over a frequency band in at least one period; and receiving a signal based on the generated laser signal. The methods can further include mixing the received signal with a local oscillator signal, the local oscillator signal having the frequency characteristic; determining at least one beat frequency based on the mixed signal; sampling the mixed signal at a rate equal to at least two times the beat frequency; determining a correction signal based on the sampled signal; and applying the correction signal to the laser signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.