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Related Concept Videos

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Attenuated total reflectance (ATR) infrared spectroscopy is a powerful analytical technique used to study the composition of materials. It is widely employed in chemistry, materials science, forensic science, and other fields where sample characterization is required. ATR has several advantages over traditional transmission IR spectroscopy, including the requirement of little to no sample preparation and the ability to analyze a wide range of samples.
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Related Experiment Video

Updated: Jun 13, 2026

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Background reflectance effects in Landsat data.

R W Dana1

  • 1USDA Forest Service, Rocky Mountain Forest Range Experiment Station, Fort Collins, Colorado 80526, USA.

Applied Optics
|April 20, 2010
PubMed
Summary

Adjacent surface reflectance significantly impacts satellite-measured object radiance. This study found that background object reflectance up to 500m away affects an object's radiance, improving satellite data accuracy.

Area of Science:

  • Remote Sensing
  • Atmospheric Optics
  • Geospatial Analysis

Background:

  • Satellite imagery captures surface radiance, but atmospheric effects and adjacent surfaces can influence measurements.
  • Understanding these influences is crucial for accurate land cover and surface property analysis.

Purpose of the Study:

  • To investigate the impact of adjacent area radiance on object radiance in satellite data.
  • To quantify the distance over which background reflectance affects object radiance.

Main Methods:

  • Regression analysis was performed on Landsat MSS data.
  • A regression model was developed incorporating average radiance of concentric rings around the object.
  • Multiple regression analysis was used to assess the significance of background reflectance.

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Main Results:

  • Inclusion of adjacent area radiance in the regression model improved the least-squares fit.
  • Object radiance is significantly affected by background object reflectance up to 500 meters away.
  • A path radiance component, due to atmospheric forward scattering, increases object radiance.

Conclusions:

  • Adjacent surface reflectance is a significant factor in satellite-measured object radiance.
  • Accounting for surrounding surface properties enhances the accuracy of remote sensing data analysis.
  • The findings have implications for improving land cover classification and biophysical parameter retrieval.