Apparatus and method for measuring concentrations of a chemical/biological/nuclear agent in an environment
US6539311B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 30, 2000 |
| Grant date | Mar 25, 2003 |
| Priority date | — |
| Expiry date | Mar 31, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/0065
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus and method for measuring chemical, biological, nuclear agents in an environment includes several detectors capable of measuring concentrations of the agents in the environment and a processor capable of operating an algorithm which, based on two sequential measures of concentration of the agent, estimates decay or elevation rate of the concentrations of the agent and feeds this estimated change rate to a Kalman filter which predicts the next measurement. The predicted next measurement of concentration is compared with the measured concentration and the error is calculated based on the discrepancy between the measured and predicted concentrations of the agent in the environment. Using this error, the attributes of the Kalman filter are adjusted to lower noise signals and improve further predictions of the concentration of the agent during the mission time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.