Waveform calibration strategies for a small-footprint laser scanner

Andreas Roncat; Wolfgang Wagner; Thomas Melzer; Andreas Ullrich

doi:10.1117/12.799850

10 October 2008 Waveform calibration strategies for a small-footprint laser scanner

Andreas Roncat, Wolfgang Wagner, Thomas Melzer, Andreas Ullrich

Proceedings Volume 7109, Image and Signal Processing for Remote Sensing XIV; 710910 (2008) https://doi.org/10.1117/12.799850
Event: SPIE Remote Sensing, 2008, Cardiff, Wales, United Kingdom

Abstract

Waveform calibration is a crucial task in the processing of full-waveform laser scanner data. In most cases, there is a non-linear relationship between the "raw" waveform data stored by the sensor system and the actual input power. However, to establish standardized methods for the post processing of waveform data, input data related linearly to the power input are required. For some commercially available systems, this problem is handled by using a look-up table (LUT) as a transfer function from the "raw" amplitude (stored by the sensor system) of the peaks of the waveforms to their actual amplitude. Since the transformation is only valid for the peaks of the waveform, the question arises how this transformation would perturbate the shape (i.e. position, width and amplitude) of a backscattered laser pulse if applied to the whole waveform. This paper discusses the effects of the use of such non-linear transfer functions on complex laser scanner waveforms.

Citation Download Citation

Andreas Roncat, Wolfgang Wagner, Thomas Melzer, and Andreas Ullrich "Waveform calibration strategies for a small-footprint laser scanner", Proc. SPIE 7109, Image and Signal Processing for Remote Sensing XIV, 710910 (10 October 2008); https://doi.org/10.1117/12.799850

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