Alerting system for a facility
US7957225B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 21, 2007 |
| Grant date | Jun 7, 2011 |
| Priority date | — |
| Expiry date | Jan 21, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B13/1672
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A surveillance system is configured to detect a rotary-wing aircraft approaching a fixed facility and provide a warning upon detection. The system includes acoustic processing nodes that receive acoustic signals from the environment surrounding the fixed facility. As the nodes receive the acoustic signals, the nodes perform a spectral analysis of the signals to detect if the source of the acoustic signals is a rotary-wing aircraft. Additionally, based upon the acoustic signals, the nodes detect an altitude of the rotary-wing aircraft and a distance between the rotary-wing aircraft and the fixed facility. In the case where the system identifies the rotary-wing aircraft as encroaching a predefined geographical area outside of the facility, based upon the altitude and distance between the rotary-wing aircraft and the facility, the system generates a warning to allow security forces to intercept the rotary-wing aircraft prior to its arrival at the facility.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.