Name
Title | ||
|---|---|---|
Derivation of Kernel Functions for Kernel-Driven Reflectance Model Over Sloping Terrain |
Abstract | ||
|---|---|---|
The importance of the bidirectional reflectance distribution function (BRDF) has been well documented in quantitative remote sensing. The semiempirical, kernel-driven BRDF model is widely used to generate operational BRDF/albedo products due to its simplicity and accuracy. However, the effect of topography is rarely coupled with a kernel-based BRDF model. In this paper, a new kernel-driven reflectance model for sloping terrain (KDST) was developed based on the framework of the RossThick-LiSparse-Reciprocal (RTLSR) model. The slope, aspect, geotropic nature of the tree crown governed by gravity, component spectra contrasts, and diffuse irradiance were considered in the KDST model. The performance of KDST was evaluated by 3-D discrete anisotropic radiative transfer (DART) simulations,
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measurements, and HJ-1A/B constellation charge-coupled device satellite observations. Using DART simulations, KDST reduces the maximum biases of the RTLSR from 15.6% and 29.7% to 7.1% and 4.8% for the surface bidirectional reflectance factor and hemispherical-direction reflectance factor, respectively. Compared with
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measurements, KDST improves the reflectance simulation accuracy for the red and near-infrared bands from 0.0172 (18.65%) and 0.022 (4.77%) to 0.0060 (6.51%) and 0.0043 (1.05%), respectively. The preliminary comparison results indicate that KDST is promising for reflectance simulation over rugged terrain. |
Year | DOI | Venue |
|---|---|---|
2019 | 10.1109/JSTARS.2018.2854771 | IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing |
Keywords | Field | DocType |
Surface topography,Kernel,Scattering,Remote sensing,Lighting,Land surface,Earth | Bidirectional reflectance distribution function,Anisotropy,Terrain,Dart,Remote sensing,Albedo,Irradiance,Radiative transfer,Mathematics,Kernel (statistics) | Journal |
Volume | Issue | ISSN |
12 | 2 | 1939-1404 |
Citations | PageRank | References |
0 | 0.34 | 0 |
Authors | ||
7 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Shengbiao Wu | 1 | 7 | 2.48 |
| Jianguang Wen | 2 | 67 | 21.30 |
| Qing Xiao | 3 | 52 | 11.09 |
| Qinhuo Liu | 4 | 280 | 85.97 |
| Dalei Hao | 5 | 6 | 4.49 |
| Lin Xingwen | 6 | 6 | 2.12 |
| Dongqin You | 7 | 38 | 10.25 |