Hierarchical tracker and method
US5341143A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 19, 1988 |
| Grant date | Aug 23, 1994 |
| Priority date | — |
| Expiry date | Aug 19, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S3/7864
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Method and apparatus for guiding a projectile to a target in a scene using a scene imaging sensor in which the projectile has a guidance and control system for aiming the projectile. A first tracker analyzes the scene and selects a first track point representative of a target and a first confidence value serving as a reliability measure of the first selected track point. A second tracker analyzes the scene and selects a second track point representing the target and a second confidence value which serves as a reliability measure of the second selected track point. Each of said trackers are constructed and arranged to operate independently in a manner that is substantially statistically uncorrelated with respect to each other. A joint confidence value based on track point proximity, convergence and divergence is generated from the tracker data and a composite confidence index is calculated from the first and second confidence values and the joint confidence value. The first and second track points are linearly combined pursuant to one of a set of rules selected by the confidence index to provide a new track point which is outputted to the projectile guidance and control system and n…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.