Abstract

Calibration of a radiometry system uses a readout circuit of a photo-detector to provide first and second measurements collected over first and second integration times, respectively, where the first and second measurements are related to a photonic input to the photo-detector by a gain and a bias. First mean and variance values are computed for a plurality of first measurements. Second mean and variance values are computed for a plurality of second measurements. The gain and bias are determined from the first and second mean values and the first and second variance values without the use of a calibrated source. The rate of photonic input to the photo-detector and the variance of noise added in the readout circuit may also be determined.

Document Type

Patent

Status

Issued

Issue Date

6-2-2020

Patent Number

US 10670745 B1

CPC Classification

G01J1/44; G01T7/005

Application number

16/134299

Assignees

Government of the United States, as represented by the Secretary of the Air Force, Wright-Patterson AFB, OH (US)

Filing Date

9-18-2018

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