Field Radiometric Calibration of a Micro-Spectrometer Based on Remote Sensing of Plateau Inland Water Colors

A breakthrough in radiometric calibration of micro-spectrometers enables accurate remote sensing reflectance (Rrs) measurements of plateau inland water bodies, including unmanned areas like Qinghai Hoh Xil. Researchers demonstrated that commercial micro-spectrometers, when field-calibrated using diffuse reflectance plates, can achieve mean absolute percentage differences (MAPD) as low as 5.11% compared to traditional spectrometers. This method provides the first in situ spectral data for remote water bodies like the Hoh Xil and Qarhan Salt Lake, overcoming challenges in unmanned regions. The study highlights that calibration coefficients vary by fiber type and integration time, offering a practical solution for precise Rrs measurements in challenging environments.

Shi, J., Shen, Q., Yao, Y., Zhang, F., Li, J., & Wang, L. (2023). Field Radiometric Calibration of a Micro-Spectrometer Based on Remote Sensing of Plateau Inland Water Colors. Applied Sciences, 13(4), 2117. https://doi.org/10.3390/app13042117