Direct detection LiDAR system and method with frequency modulation (FM) transmitter and quadrature receiver
US10416292B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 14, 2016 |
| Grant date | Sep 17, 2019 |
| Priority date | — |
| Expiry date | Jul 29, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S17/931
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A LiDAR system and method include a signal generator generating an output signal having a variable frequency. A modulation circuit receives the output signal from the signal generator and applies the output signal from the signal generator to an optical signal to generate an envelope-modulated optical signal having a frequency-modulated (FM) modulation envelope. Optical transmission elements transmit the envelope-modulated optical signal into a region. Optical receiving elements receive reflected optical signals from the region. Receive signal processing circuitry receives the reflected optical signals and uses quadrature detection to process the reflected optical signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.