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Matched filtering-based estimation of ground elevation using laser altimetry / J.M. Anderson in IEEE Transactions on geoscience and remote sensing, vol 39 n° 10 (October 2001)  

Public [article]  inIEEE Transactions on geoscience and remote sensing > vol 39 n° 10 (October 2001) . - pp 2168 - 2175 Titre : Matched filtering-based estimation of ground elevation using laser altimetry Type de document : Article/Communication Auteurs : J.M. Anderson, Auteur ; A.S. Al Qatshan, Auteur Année de publication : 2001 Article en page(s) : pp 2168 - 2175 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie [Termes IGN] bruit blanc [Termes IGN] télémétrie laser aéroporté [Termes IGN] théorème de Gauss [Termes IGN] traitement du signal Résumé : (Auteur) In this paper, we present a method for determining the time-of-arrival (TOA) of the ground component of a laser altimetry return signal. The proposed method takes advantage of the fact that the ground component or ground return is approximately Gaussian shaped and occurs at the end of the return signal. In particular, the method exploits the well-known result that the TOA of a known signal in white Gaussian noise can be estimated using matched filtering. An important feature of the method is that it addresses the problem of overlap between ground and vegetation returns. Simulations using synthetic data indicate that the proposed method provides excellent estimates and greatly outperforms a conventional method. It is anticipated that the method will be applicable to laser altimetry applications where the ground return can be assumed to have an approximately known shape. Numéro de notice : A2001-093 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1109/36.957279 En ligne : https://doi.org/10.1109/36.957279 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=21793 [article]

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