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Articles | Volume XXXVIII-5/W12
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XXXVIII-5/W12, 37–42, 2011
https://doi.org/10.5194/isprsarchives-XXXVIII-5-W12-37-2011
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XXXVIII-5/W12, 37–42, 2011
https://doi.org/10.5194/isprsarchives-XXXVIII-5-W12-37-2011
 
03 Sep 2012
03 Sep 2012

LASER PULSE VARIATIONS AND THEIR INFLUENCE ON RADIOMETRIC CALIBRATION OF FULL-WAVEFORM LASER SCANNER DATA

A. Roncat1, H. Lehner1, and C. Briese2,1 A. Roncat et al.
  • 1Institute of Photogrammetry and Remote Sensing (IPF), Vienna University of Technology, Austria
  • 2Ludwig Boltzmann Institute for Archaeological Prospection and Virtual Archaeology, Vienna, Austria

Keywords: Radiometric Calibration, Full-Waveform, Laser Scanning, Error Assessment

Abstract. Full-waveform laser scanning extends the information content of "conventional" laser scanning by storing the temporal profile of both the emitted laser pulse and its echoes. This allows for calculating radiometric quantities in addition to the geometric data. This radio- metric information needs to be calibrated in order to enable comparison among flight strips of the same laser scanner campaign and/or different campaigns. Radiometric calibration is aimed at the determination of a calibration constant which contains the parameters of the emitted laser pulse (besides others). All of these parameters are normally treated as constants. In this paper, the sensitivity of the calibration constant to variations of the emitted laser pulse is analysed theoretically by deriving it according to the error propagation law, followed by an empirical analysis carried out on the example of two airborne full-waveform laser scanning campaigns. Both were operated with the same instrument and over the same area on two different dates.