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

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.

[1]  W. Wagner,et al.  Gaussian decomposition and calibration of a novel small-footprint full-waveform digitising airborne laser scanner , 2006 .

[2]  Uwe Stilla,et al.  Range determination with waveform recording laser systems using a Wiener Filter , 2006 .

[3]  Norbert Pfeifer,et al.  B-spline deconvolution for differential target cross-section determination in full-waveform laser scanning data , 2011 .

[4]  C. Mallet,et al.  Terrain surfaces and 3-D landcover classification from small footprint full-waveform lidar data: application to badlands , 2009 .

[5]  Bernhard Höfle,et al.  Calibration of full-waveform airborne laser scanning data for object classification , 2008, SPIE Defense + Commercial Sensing.

[6]  Edward M. Mikhail,et al.  Observations And Least Squares , 1983 .

[7]  N. Pfeifer,et al.  Correction of laser scanning intensity data: Data and model-driven approaches , 2007 .

[8]  Frédéric Bretar,et al.  Full-waveform topographic lidar : State-of-the-art , 2009 .

[9]  Christian Briese,et al.  RADIOMETRIC CALIBRATION OF FULL-WAVEFORM AIRBORNE LASER SCANNING DATA BASED ON NATURAL SURFACES , 2010 .

[10]  Robert Nowak,et al.  Improved Approach to Lidar Airport Obstruction Surveying Using Full- Waveform Data , 2009 .

[11]  J. Bryan Blair,et al.  Decomposition of laser altimeter waveforms , 2000, IEEE Trans. Geosci. Remote. Sens..

[12]  Wolfgang Wagner,et al.  Radiometric calibration of small-footprint full-waveform airborne laser scanner measurements: Basic physical concepts , 2010 .

[13]  Juha Hyyppä,et al.  Radiometric Calibration of LIDAR Intensity With Commercially Available Reference Targets , 2009, IEEE Transactions on Geoscience and Remote Sensing.

[14]  C. E. Harris,et al.  Laser Radar Systems , 1991 .