Direct detection LiDAR system and method with pulse amplitude modulation (AM) transmitter and quadrature receiver
US10838062B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 2, 2016 |
| Grant date | Nov 17, 2020 |
| Priority date | — |
| Expiry date | May 2, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S17/931
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A LiDAR system and method includes a pulse modulation circuit and an amplitude modulation circuit for applying pulse modulation and amplitude modulation to a continuous signal to generate a plurality of amplitude-modulated pulses of the continuous signal. An optical modulation circuit applies the amplitude-modulated pulses of the continuous signal to an optical signal to generate a pulse amplitude-modulated (PAM) optical signal. Optical transmission elements transmit the PAM optical signal into a region, and optical receiving elements receive reflected optical signals from the region. Receive signal processing circuitry uses quadrature detection to process the reflected optical signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.