Frequency modulation continuous wave (FMCW)-based system for estimation and compensation of nonlinearity in linearly swept sources
US12372609B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 12, 2021 |
| Grant date | Jul 29, 2025 |
| Priority date | — |
| Expiry date | Nov 11, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S17/34
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A frequency modulation continuous wave (FMCW)-based system configured to convert measurements of a linearly modulated wave from a time-domain into a frequency-domain to produce a non-linear frequency signal, where the non-linear frequency signal comprises a known linear component representing the desired linear modulation and an unknown non-linear component representing the non-linearity of the modulation. The FMCW-based system is further configured to determine coefficients of a basis function approximating a difference between the non-linear frequency signal and the linear frequency component in the frequency domain. The FMCW-based system is further configured to detect one or multiple spectrum peaks in the distorted beat signal with the distortion compensated according to the basis function with the determined coefficients to determine one or multiple distances to the one or multiple objects in the scene.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.