The Multi-Channel Infrared Sea Truth Radiometric Calibrator (MISTRC)

Infrared and Passive Microwave Radiometric Sea Surface Temperatures and Their Relationships to Atmospheric Forcing

Testing the radiometric accuracy of Fourier transform infrared transmittance measurements.

We have investigated the ordinate scale accuracy of ambient temperature transmittance measurements made with a Fourier transform infrared (FT-IR) spectrophotometer over the wavelength range of 2-10 mum. Two approaches are used: (1) measurements of Si wafers whose index of refraction are well known from 2 to 5 mum, in which case the FT-IR result is compared with calculated values; (2) comparison...

Radiometric Calibration Methodology of the Landsat 8 Thermal Infrared Sensor

The science-focused mission of the Landsat 8 Thermal Infrared Sensor (TIRS) requires that it have an accurate radiometric calibration. A calibration methodology was developed to convert the raw output from the instrument into an accurate at-aperture radiance. The methodology is based on measurements obtained during component-level and instrument-level characterization testing. The radiometric a...

Cross Correlation Analysis of Multi-channel near Infrared Spectroscopy

In this paper we present the use of a signal processing technique to find dominant channels in near infrared spectroscopy (NIRS). Cross correlation is computed to compare measuring channels and identify delays among the channels. In addition, visual inspection was used to detect potential dominant channels. The results showed that the visual analysis exposed painrelated activations in the prima...

Accrediting Artifact Calibration of a Multi-Function Calibrator

A decade ago, two companies introduced electronic instruments incorporating Artifact Calibration, a technology by which an instrument calibrates itself using a small number of external standards, thereby significantly reducing the cost of calibration and simplifying their path of traceability. Some national standards laboratories have been cautious about accepting Artifact Calibration, perhaps ...