Traffic light signal system using radar-based target detection and tracking
US7821422B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 18, 2004 |
| Grant date | Oct 26, 2010 |
| Priority date | — |
| Expiry date | Feb 13, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/726
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A novel system and method of integrating an RF emissions device, such as a radar system (103A), within a traffic control indicator (101) system. The system and method determines, using LFM-CW radar signals (201) and a multi-stage spectral processing algorithm (600), if one or more object/vehicle targets will enter an intersection and comprises receiving a radar echo response (203) indicating the object/vehicle target (104) is approaching the intersection, receiving range and velocity of the object/vehicle targets (104), and based on the receiving, determining if the object/vehicle target (104) will enter the intersection. The system and method can programmatically be configured to activate red-light-hold, green-light-extension, or left-turn-warning.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.