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) Airborne Operations Bathymetric Maps Cathode Ray Oscillographs Electric Circuit Analysis Laser Beams Laser Pulses, Ultrashort Logarithmic Amplifiers Logarithmic Functions Shear Waves Volume (Cubic Content)
Series:

NOAA technical report OTES 6
Document Type:

Technical Report
Rights Information:

Public Domain
Compliance:

Library
Main Document Checksum:

urn:sha-512:0194763f17c2042588a24934453c31ad8731d98166c5fbbeeaf67b949f9985ba948d93a317028fbbd66ae0c780ed0d69782893b212ee0be6fb391120d1ae8d31
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https://repository.library.noaa.gov/view/noaa/23477/noaa_23477_DS1.pdf
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[PDF - 10.33 MB ]

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