Dual field-of-view optical target detector
US4532867A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 7, 1983 |
| Grant date | Aug 6, 1985 |
| Priority date | — |
| Expiry date | Jul 7, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S7/493
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Dual field-of-view detection allows reflected energy from a target to be eived in one detector and extraneous reflected energy adjacent to the target area to be simultaneously detected in a separate detector. Comparison of the desired signal with a threshold level and with the detected extraneous energy level allows superior false alarm rejection while improving sensitivity by allowing reduced threshold levels for the true target. This dual detection in a single receiver allows the receiver to have two separate but immediately adjacent fields-of-view which interact with a transmitted beam to form a pair of adjacent sensing zones. A vehicle such as a missile equipped with this detection system can pass in close proximity to a target and distinguish a true target passing through the established sensing zone from extraneous background signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.