System and method for determining position and velocity of an intruder from an array of sensors
US4121192A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 31, 1974 |
| Grant date | Oct 17, 1978 |
| Priority date | — |
| Expiry date | Jan 31, 1994 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B13/00
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
This invention relates to a system and method for determining velocity, direction, position, profile and confidence information of a target such as an intruder from alarms generated by the intruder passing by an array of spaced sensors. The system comprises a processor, the primary element of which is a velocity-position matrix comprising a plurality of information storage cells in the form of counters. The cells are arranged in a plurality of adjacent rows and adjacent columns corresponding to target velocity and position, respectively. Each sensor alarm is entered as a count into cells in those columns which correspond to sensor deployment and the count in each cell is shifted to the adjacent cell in the same row by auxiliary equipment at different rates for the different rows to provide a velocity determination capability. Counts are subtracted from the cells in the columns corresponding to sensor locations when no alarm is given by the particular sensor. Apparatus is provided to scan the matrix for determination of maximum counts in the cells to indicate the position and velocity of the intruder or target. Direction, profile or target length, and confidence information are deri…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.