− Lock-in and pulse phase infrared thermography measurement techniques have been exploited for quantitative assessment of subsurface defects in a reference specimen made of Plexiglas. Radiometric thermal images were post-processed using a contrast approach in the frequency domain, allowing defect depth location to be resolved with a relative combined standard uncertainty of about 7% for thickne...

On-orbit radiometric characterization of the multispectral (MS) imagery of the Korea Aerospace Research Institute (KARI)’s Korea Multi-Purpose Satellite-3A (KOMPSAT-3A), which was launched on 25 March 2015, was conducted to provide quantitative radiometric information about KOMPSAT-3A. During the in-orbit test (IOT), vicarious radiometric calibration of KOMPSAT-3A was performed using the Second...

Results of blood culture examination using the radiometric (Bactec-460) system for one year showed no overall improvement compared with those of the previous three years when a manual system with early blind subculture was used. The isolates from the manual system were available more often on solid media, 24 hours earlier, than when the radiometric system was used. In a further study of 1100 bl...

The generation of well-calibrated radiometric measurements from imaging spectrometer data requires careful consideration of all influencing factors, as well as an instrument calibration based on a detailed sensor model. Deviations of ambient parameters (i.e., pressure, humidity, temperature) from standard laboratory conditions during airborne operations can lead to biases that should be account...

Ill-conditioned or singular data modeling problems are commonly observed in image processing. To solve these problems some constraints, such as smoothness and boundary conditions have to be formulated. Further, the optimal structure of the model is not always self-evident. There are several criteria that can be applied for ”optimal” regularization gain or model selection. However, these measure...

Satellite imagery and data are playing an increasingly important role in scientific studies of the Earth its climate. The community has been demanding ever-increasing capabilities accuracy from provided by these satellites. One key instrument on board a series satellite platforms is Visible Infrared Imaging Radiometer Suite (VIIRS), which provides high-quality low orbit covering visible to long...

A precise radiometric calibration of the measured spectra is essential for a good quality of the trace gas retrievals. In order to ensure a high radiometric accuracy, a calibration scenario has to be developed that meets the tradeoff between data quality and the necessary measurement time. Furthermore the radiometric calibration requires an accurate instrument characterisation. This presentatio...