Effects of Detection Algorithm on Accuracy Degradation From Logarithmic and Difference Processing for Airborne Laser Bathymetry Returns

Guenther, Gary C.

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Effects of Detection Algorithm on Accuracy Degradation From Logarithmic and Difference Processing for Airborne Laser Bathymetry Returns

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Personal Author:

Guenther, Gary C.
Corporate Authors:

OTES (Ocean Technology and Engineering Services)
NOAA Program & Office:

OTES (Ocean Technology and Engineering Services)
Description:

The Hydrographic Airborne Laser Sounder (HALS) system currently under construction for the Naval Ocean Research and Development Activity (NORDA) incorporates logarithmic amplification for dynamic range compression and a first-difference processing circuit to reduce the volume scattering signal prior to the arrival of the bottom return. These non-linear signal processing steps distort the input waveforms and lead to depth measurement biases whose magnitudes depend on signal strengths, pulse location algorithms, and algorithm parameters.
Keywords:

[+]

Airborne Operations Algorithms Bathymetric Maps Cathode Ray Oscillographs Depth-area-duration (Hydrometeorology) Detection Electric Circuit Analysis Laser Beams Laser Pulses, Ultrashort Logarithmic Amplifiers Logarithmic Functions Pulsars Scattering (Physics) Shear Waves Volume (Cubic Content)
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NOAA technical report OTES ; 6
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Technical Report
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Public Domain
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urn:sha256:f22c08a18836d95936ab00af1838cc79d7d69238525f3cfdea388035123d89c6
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https://repository.library.noaa.gov/view/noaa/23477/noaa_23477_DS1.pdf
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Effects of Detection Algorithm on Accuracy Degradation From Logarithmic and Difference Processing for Airborne Laser Bathymetry Returns

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