研究目的

To present the results of the calibration and characterization efforts performed on the Norsk Elektro Optikk (NEO) HySpex VNIR-1600 and SWIR-320m-e imaging spectrometers for the development of physically based inversion algorithms, atmospheric correction and for calibration/validation activities.

研究成果

This paper has presented, to the authors’ best knowledge, the first independent characterization and calibration of NEO imaging spectrometers for scientific use in remote sensing. Through the traceable spectral and radiometric calibration of the data, information on the uncertainties involved in the measurement process can now be provided. This is necessary to perform valid measurements and allows potential users to ascertain the usability of the data from these sensors for their use cases. Further, the indication of measurement uncertainties is crucial for the comparison of different data sets. The traceable radiometric calibration is also a prerequisite for quantitative data analysis methods that are based on absolute at-sensor radiances and unbiased reflectances, including atmosphere correction.

研究不足

The characterization presented here is similar to those performed for other remote sensing imaging spectrometers to obtain a clear understanding of the specifics of the instruments and to provide the processing steps of radiometric calibration, atmospheric correction and orthorectification with the required sensor data.