Self-calibration of a radiometric imager
US10436653B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 9, 2017 |
| Grant date | Oct 8, 2019 |
| Priority date | — |
| Expiry date | Nov 24, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01K11/006
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for internal calibration of a detector comprising using one or more hardware processors for the following actions. The method comprises an action of receiving a request for internal calibration of a detector comprising a switchable termination resistor (Dicke switch) and connecting electronically one or more internal calibration circuits to the termination resistor. The method comprises an action of applying two or more input voltage signals to the detector from the calibration circuit and measuring two or more output readings from the detector, each output reading corresponding to one of the input voltage signals. The method comprises an action of computing internal calibration coefficients based on the input voltage signals and the output readings. The method comprises an action of storing the internal calibration coefficients on a non-transitory computer-readable storage medium connected to the hardware processor(s) for subsequent calibration of output values from the detector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.