System and method for tracking beam-aspect targets with combined Kalman and particle filters
US7046188B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 14, 2003 |
| Grant date | May 16, 2006 |
| Priority date | — |
| Expiry date | Feb 10, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/723
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Systems and methods of tracking a beam-aspect target are provided. In embodiments, a target is tracked with a Kalman filter while detections are received. After a detection is missed, the Kalman filter may be concurrently propagated with a blind-zone particle filter until a probability that the target is in a blind zone exceeds a threshold. When the probability exceeds the threshold, the Kalman filter may refrain from further propagating. After a gated detection is received, the blind-zone particle filter and an unrestricted-zone particle filter may be concurrently propagated while a probability that the target is in an unrestricted zone exceeds a threshold. The system may return to tracking with the Kalman filter when a covariance of the unrestricted-zone particle filter falls below a predetermined covariance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.