System and method for determining vehicle position based upon light-based communication and time-of-flight measurements
US10218448B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 2, 2017 |
| Grant date | Feb 26, 2019 |
| Priority date | — |
| Expiry date | Feb 2, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S5/16
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system and method for determining vehicle position uses light based communication (LBC) signals and a time-of-flight (TOF) pulse. Each vehicle includes a LBC system having light emitting diodes (LEDs) and receiver photodiodes capable of sending and receiving pulsed light binary messages. The LBC system may also include a TOF transceiver for sending and receiving TOF pulses, or the transmitter and receiver diodes may be used to send and receive TOF pulses. Each LBC system has a controller coupled to the transmitter diodes and receiver diodes (and the TOF transceiver when present). The controller includes a processor configured to determine the distance between vehicles. Optical characteristics are used to discern relative angle, a header is used to determine relative orientation, and the time-of-flight is used to determine distance, which together may be used by the processor to determine the relative location between transmitting vehicle and the receiving vehicle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.