LIDAR system noise calibration and target detection
US10884130B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 18, 2020 |
| Grant date | Jan 5, 2021 |
| Priority date | — |
| Expiry date | Aug 18, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S17/931
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A light detection and ranging (LIDAR) system includes an optical scanner to transmit a frequency-modulated continuous wave (FMCW) infrared (IR) optical beam and to receive a return signal from reflections of the optical beam; an optical processing system coupled with the optical scanner to generate a baseband signal in the time domain from the return signal, where the baseband signal includes frequencies corresponding to LIDAR target ranges; and a signal processing system coupled with the optical processing system to measure energy of the baseband signal in the frequency domain, to compare the energy to an estimate of LIDAR system noise, and to determine a likelihood that an signal peak in the frequency domain indicates a detected target.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.