Constant false alarm rate detection in pulsed LiDAR systems
US11041944B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 1, 2019 |
| Grant date | Jun 22, 2021 |
| Priority date | — |
| Expiry date | Jul 6, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S17/931
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Disclosed are techniques for improving the probability of detection and the probability of false alarm of a light detection and ranging (LiDAR) system. A receiver of the LiDAR system is configured to obtain a noise signal vector for an operation condition and determine the coefficients of a matched filter based on the noise signal vector. The matched filter is used to filter a returned signal vector corresponding to returned light detected by the receiver. The receiver detects an object in the field of view of the LiDAR system based on identifying, in the returned signal vector filtered by the matched filter, a pulse having a peak higher than a threshold value. In some embodiments, the receiver is configured to determine the threshold value based on the noise signal vector, energy of the transmitted signal, and a desired false alarm rate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.