TY - GEN
T1 - Discrimination between road and soil surfaces using CO2 laser reflectances
AU - Narayanan, Ram M.
AU - vonRentzell, Earl D.
AU - Alexander, Dennis R.
PY - 1992
Y1 - 1992
N2 - It is well known that CO2 laser reflectances of natural surfaces containing certain minerals, notably quartz, feldspar and kaolinite, exhibit differential reflectance features in the 9 - 11 μm mid-infrared spectral range. The use of off-normal reflectance ratios using measurements at four CO2 laser wavelengths to differentiate between various types of soil surfaces has been established. Off-normal reflectance ratios are observed to be relatively independent of incidence angle compared to ratios computed at normal incidence, which makes them suitable for field remote sensing applications. Road surface materials, such as concrete and asphalt, contain large quantities of quartz, and as such exhibit reflectance characteristics similar to soils. Our measurements indicate that it is, nevertheless, possible to discriminate between road and soil surfaces using off-normal reflectance ratios. Discrimination from soil surfaces is better for concrete compared to asphalt.
AB - It is well known that CO2 laser reflectances of natural surfaces containing certain minerals, notably quartz, feldspar and kaolinite, exhibit differential reflectance features in the 9 - 11 μm mid-infrared spectral range. The use of off-normal reflectance ratios using measurements at four CO2 laser wavelengths to differentiate between various types of soil surfaces has been established. Off-normal reflectance ratios are observed to be relatively independent of incidence angle compared to ratios computed at normal incidence, which makes them suitable for field remote sensing applications. Road surface materials, such as concrete and asphalt, contain large quantities of quartz, and as such exhibit reflectance characteristics similar to soils. Our measurements indicate that it is, nevertheless, possible to discriminate between road and soil surfaces using off-normal reflectance ratios. Discrimination from soil surfaces is better for concrete compared to asphalt.
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U2 - 10.1117/12.137865
DO - 10.1117/12.137865
M3 - Conference contribution
AN - SCOPUS:0026964932
SN - 0819408522
SN - 9780819408525
T3 - Proceedings of SPIE - The International Society for Optical Engineering
SP - 370
EP - 380
BT - Proceedings of SPIE - The International Society for Optical Engineering
PB - Publ by Society of Photo-Optical Instrumentation Engineers
T2 - Characterization, Propagation, and Simulation of Sources and Backgrounds II
Y2 - 20 April 1992 through 22 April 1992
ER -