Two-stage target tracking system and method
US5214433A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 17, 1992 |
| Grant date | May 25, 1993 |
| Priority date | — |
| Expiry date | Jun 17, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/723
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus and method for tracking maneuvering and non-maneuvering targ in the presence of stochastic acceleration are provided. The apparatus and method utilize a two-stage Kalman estimator, the first stage of which is a bias-free filter providing target position and velocity estimates, and the second stage of which is a bias filter providing estimates of target acceleration. These two filters act together to provide parallel processing calculations thereby achieving high speed target state determination. During target maneuvers, the output of the second stage is used to correct the output of the first stage. In the absence of maneuver, the second stage is turned off and the first stage provides the target position and velocity estimates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.