Using multi-angle hyperspectral data to monitor canopy leaf nitrogen content of wheat

Evaluation of Six Algorithms to Monitor Wheat Leaf Nitrogen Concentration

The rapid and non-destructive monitoring of the canopy leaf nitrogen concentration (LNC) in crops is important for precise nitrogen (N) management. Nowadays, there is an urgent need to identify next-generation bio-physical variable retrieval algorithms that can be incorporated into an operational processing chain for hyperspectral satellite missions. We assessed six retrieval algorithms for est...

Estimating canopy water content using hyperspectral remote sensing data

Hyperspectral remote sensing has demonstrated great potential for accurate retrieval of canopy water content (CWC). This CWC is defined by the product of the leaf equivalent water thickness (EWT) and the leaf area index (LAI). In this paper, in particular the spectral information provided by the canopy water absorption feature at 970 nm for estimating and predicting CWC was studied using a mode...

Water stress of sugarbeet as related to leaf and canopy temperatures and to leaf Water content

Effect of Canopy Geometry on Estimation of Leaf Area Index in Winter Wheat Using Multi-angle Spectrum

This study presents a method for quantitatively estimating leaf area index (LAI) in winter wheat by exploring bi-directional reflectance distribution function (BRDF) data. In BRDF data, near-infrared reflectance (NIR) which is sensitive to crown component, canopy cover and crown shape, is affected by illuminated crown component, while red reflectance is sensitive to canopy gaps and controlled b...

Hyperspectral Assessment of Canopy Nitrogen Content in Rice - Comparative Analysis Using Multiple Datasets -

Assessment of canopy nitrogen content (CNC) is an important basis for growth diagnosis, precision management, and yield prediction in rice crop. High-resolution spectral reflectance measurement (Hyperspectra) has been suggested to have significant roles in assessment of crop variables, especially biochemical components (e.g., chlorophyll content) and physiological functioning (e.g., light use e...