An optimal filtering and detection of echoes in laser-based aerial bathymetric surveying

Thierry Jurand, Moshe Kam, Robert Fischl

Research output: Contribution to journalArticle

Abstract

A filter matched to the expected shape of the ocean bottom return is derived. It maximizes the signal-to-noise ratio for detection in additive white noise. The shape of the ocean bottom echo pulses is based on a two-dimensional analytical model of the light transmission characteristics of the water medium, where the effects of light propagation are represented geometrically by a cone of propagation. The performance of the matched filter is evaluated in terms of the receiver operating characteristics and is compared with a suboptimal filter which neglects the attenuation and scattering effects in the water medium. This comparison gives a figure of merit as to the improvement one can achieve using the matched filter, as a function of the ocean bottom's depth.

Original languageEnglish (US)
Pages (from-to)1383-1388
Number of pages6
JournalProceedings of the American Control Conference
StatePublished - Dec 1 1990
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering

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