Laboratory-based evaluation of optical performance for a new soil penetrometer visible and near-infrared (VisNIR) foreoptic
We designed a VisNIR penetrometer foreoptic for proximal soil sensing. We evaluated this design by comparison with a commercial foreoptic in laboratory. The two foreoptics spectra showed a high correlation. Both foreoptics SOC models yielded very similar validation predictions.
visnir visible near-infrared asd analytical spectral device inc soc soil organic carbon rmsep root mean square error of prediction sep standard error of prediction led light emitting diode som soil organic matter ec electrical conductivity swir short wave infrared