Radiometric calibration of LIDAR intensity with commercially available reference targets

  • Kaasalainen S
  • Hyyppä H
  • Kukko A
 et al. 
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We present a new approach for radiometric calibration of light detection and ranging (LIDAR) intensity data and demonstrate an application of this method to natural targets. The method is based on 1) using commercially available sand and gravel as reference targets and 2) the calibration of these reference targets in the laboratory conditions to know their backscatter properties. We have investigated the target properties crucial for accurate and consistent reflectance calibration and present a set of ideal targets easily available for calibration purposes. The first results from LIDAR-based brightness measurement of grass and sand show that the gravel-based calibration approach works in practice, is cost effective, and produces statistically meaningful results: Comparison of results from two separate airborne laser scanning campaigns shows that the relative calibration produces repeatable reflectance values.

Author-supplied keywords

  • Calibration
  • Laser measurements
  • Laser radar
  • Laser radiation effects
  • Remote sensing

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