Abstract
Mapping semi-arid vegetation types at the community level is extremely difficult for optical sensors with large ground footprints such as the National Oceanic and Atmospheric Administration (NOAA) Advanced Very High Resolution Radiometer (AVHRR). Attempts to usc solar wavelength AVHRR data in community type differentiation have often resulted in unacceptable classification errors which are usually attributed to noise from topographic and soil background variations, inaccurate reflectance retrieval and poor registration. One source of variation which is rarely accounted for adequately is the directional signal resulting from the combined effects of the surface bidirectional reflectance distribution function (BRDF) and the variation of viewing and illumination geometry as a function of scan angle, season, latitude and orbital overpass time. In this study, a linear semiempirical kernel-driven (LiSK) BRDF model is used to examine the utility of the directional signal in community and cover type differentiation over discontinuous but statistically homogeneous semi-arid canopies in Inner Mongolia Autonomous Region (IMAR), China, and New Mexico (NM), USA. This research shows that the directional signal resulting from the physical structure of the canopy-soil complex can be retrieved to provide information which is highly complementary to that obtained in the spectral domain.
| Original language | English |
|---|---|
| Pages (from-to) | 1132-1149 |
| Number of pages | 18 |
| Journal | IEEE Transactions on Geoscience and Remote Sensing |
| Volume | 40 |
| Issue number | 5 |
| DOIs | |
| State | Published - 1 May 2002 |
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Keywords
- Desert regions
- Environmental factors
- Geometric modelling
- Image classification
- Optical reflection
- Optical scattering
- Remote sensing
- Satellite applications
- Vegetation mapping
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Improved semi-arid community type differentiation with the NOAA AVHRR via exploitation of the directional signal. / Chopping, Mark; Rango, Albert; Ritchie, Jerry C.
In: IEEE Transactions on Geoscience and Remote Sensing, Vol. 40, No. 5, 01.05.2002, p. 1132-1149.Research output: Contribution to journal › Article › Research › peer-review
TY - JOUR
T1 - Improved semi-arid community type differentiation with the NOAA AVHRR via exploitation of the directional signal
AU - Chopping, Mark
AU - Rango, Albert
AU - Ritchie, Jerry C.
PY - 2002/5/1
Y1 - 2002/5/1
N2 - Mapping semi-arid vegetation types at the community level is extremely difficult for optical sensors with large ground footprints such as the National Oceanic and Atmospheric Administration (NOAA) Advanced Very High Resolution Radiometer (AVHRR). Attempts to usc solar wavelength AVHRR data in community type differentiation have often resulted in unacceptable classification errors which are usually attributed to noise from topographic and soil background variations, inaccurate reflectance retrieval and poor registration. One source of variation which is rarely accounted for adequately is the directional signal resulting from the combined effects of the surface bidirectional reflectance distribution function (BRDF) and the variation of viewing and illumination geometry as a function of scan angle, season, latitude and orbital overpass time. In this study, a linear semiempirical kernel-driven (LiSK) BRDF model is used to examine the utility of the directional signal in community and cover type differentiation over discontinuous but statistically homogeneous semi-arid canopies in Inner Mongolia Autonomous Region (IMAR), China, and New Mexico (NM), USA. This research shows that the directional signal resulting from the physical structure of the canopy-soil complex can be retrieved to provide information which is highly complementary to that obtained in the spectral domain.
AB - Mapping semi-arid vegetation types at the community level is extremely difficult for optical sensors with large ground footprints such as the National Oceanic and Atmospheric Administration (NOAA) Advanced Very High Resolution Radiometer (AVHRR). Attempts to usc solar wavelength AVHRR data in community type differentiation have often resulted in unacceptable classification errors which are usually attributed to noise from topographic and soil background variations, inaccurate reflectance retrieval and poor registration. One source of variation which is rarely accounted for adequately is the directional signal resulting from the combined effects of the surface bidirectional reflectance distribution function (BRDF) and the variation of viewing and illumination geometry as a function of scan angle, season, latitude and orbital overpass time. In this study, a linear semiempirical kernel-driven (LiSK) BRDF model is used to examine the utility of the directional signal in community and cover type differentiation over discontinuous but statistically homogeneous semi-arid canopies in Inner Mongolia Autonomous Region (IMAR), China, and New Mexico (NM), USA. This research shows that the directional signal resulting from the physical structure of the canopy-soil complex can be retrieved to provide information which is highly complementary to that obtained in the spectral domain.
KW - Desert regions
KW - Environmental factors
KW - Geometric modelling
KW - Image classification
KW - Optical reflection
KW - Optical scattering
KW - Remote sensing
KW - Satellite applications
KW - Vegetation mapping
UR - http://www.scopus.com/inward/record.url?scp=0036564509&partnerID=8YFLogxK
U2 - 10.1109/TGRS.2002.1010900
DO - 10.1109/TGRS.2002.1010900
M3 - Article
VL - 40
SP - 1132
EP - 1149
JO - IEEE Transactions on Geoscience and Remote Sensing
JF - IEEE Transactions on Geoscience and Remote Sensing
SN - 0196-2892
IS - 5
ER -