Discrimination between road and soil surfaces using CO2 laser reflectances

Ram M. Narayanan, Earl D. vonRentzell, Dennis R. Alexander

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Abstract

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.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherPubl by Society of Photo-Optical Instrumentation Engineers
Pages370-380
Number of pages11
ISBN (Print)0819408522, 9780819408525
DOIs
StatePublished - 1992
EventCharacterization, Propagation, and Simulation of Sources and Backgrounds II - Orlando, FL, USA
Duration: Apr 20 1992Apr 22 1992

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume1687
ISSN (Print)0277-786X

Other

OtherCharacterization, Propagation, and Simulation of Sources and Backgrounds II
CityOrlando, FL, USA
Period4/20/924/22/92

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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  • Cite this

    Narayanan, R. M., vonRentzell, E. D., & Alexander, D. R. (1992). Discrimination between road and soil surfaces using CO2 laser reflectances. In Proceedings of SPIE - The International Society for Optical Engineering (pp. 370-380). (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 1687). Publ by Society of Photo-Optical Instrumentation Engineers. https://doi.org/10.1117/12.137865