Search results for "DTM"

Radiometric and geometric evaluation of the capabilities of the new airborne digital photogrammetric sensors

2008

In this paper the theoretic and practical points of view about the applications of the modern digital airborne sensors in the photogrammetry and remote sensing fields are described. The first part of the paper describes the theoretic matter, the second one shows the first results regarding the carried out elaborations on an image of Palermo acquired by digital airborne sensor LH System ADS40. Besides the research has examined most of sides regarding the trilinear sensor and it has highlighted the capabilities and limitations respect to the traditional analogical system and the matricial CCD sensor.

Le pont des Grilles de la Basse-Seille (fin XIVe siècle), ancienne porte d’eau de l’enceinte urbaine de Metz

2017

The bridge des Grilles de la Basse-Seille is one of the last vestiges of the medieval fortification in Metz. It is one of rare examples of fortified bridge in France. Built in the end of the 14th century, it is backfilled in 1911 and only its upper section is visible. An archaeological and historic study was made in 2011 to understand the configuration and the functioning of the bridge in the Middle Ages.

Full-Waveform Terrestrial Laser Scanning for Extracting a High-Resolution 3D Topographic Model: a Case Study on an Area of Archaeological Significance

2014

AbstractThis paper describes a method, which uses full-waveform terrestrial laser scanning to survey the surface of the slope below the Temple of Juno, located in the Valley of the Temples in Agrigento (Sicily, Southern Italy). The surface is characterized by the presence of large rock blocks, which have fallen down from the upper side; possible further detachments of rock blocks would cause a situation of general instability, with a very high risk to the archaeological structures in the near future. The methodology was designed to evaluate the potential of full-waveform laser scanning technology for the production of a very high resolution 3D topographic model of the slope, to be used as a…

Using the concept of spatial contexts for the prediction of archaeological rural settlement

2011

Aggregated Packet Transmission in Duty-Cycled WSNs: Modeling and Performance Evaluation

2017

[EN] Duty cycling (DC) is a popular technique for energy conservation in wireless sensor networks (WSNs) that allows nodes to wake up and sleep periodically. Typically, a single-packet transmission (SPT) occurs per cycle, leading to possibly long delay. With aggregated packet transmission (APT), nodes transmit a batch of packets in a single cycle. The potential benefits brought by an APT scheme include shorter delay, higher throughput, and higher energy efficiency. In the literature, different analytical models have been proposed to evaluate the performance of SPT schemes. However, no analytical models for the APT mode on synchronous DC medium access control (MAC) mechanisms exist. In this …

I sassi di Matera – Laboratorio a cielo aperto di Disegno e Rappresentazione

2008

Le giornate di studio trascorse e le attività condotte in occasione del workshop hanno permesso di cogliere la complessità e la singolarità di un luogo cotraddistinto dalle forti connotazioni naturali e antropiche. Sulla base del materiale di supporto fornitoci, lo studio su una porzione del territorio della Gravina con il suo torrente ha condotto alla produzione di un DTM, una rappresentazione digitale del terreno generata dall’elaborazione automatica con il calcolatore.

Surveying in the Valley of the Temples

2014

Full-waveform terrestrial laser scanning enables high-precision 3D topographic modelling of unstable rock valleys that is valuable for various geomorphological investigations. The area below the archaeological site of Temple of Juno in Agrigento, Sicily, is characterised by the presence of large sections of rock that have fallen down from the upper ridge. In this context, full-waveform laser scanning technology was tested for the production of a highly detailed 3D topographic model at two resolutions (2cm and 20cm) for simulating potential rockfall paths at the site.

Résolution spatiale des MNT et qualité de l'estimation des températures et des précipitations en France

2015

DTM spatial resolution and temperature and amount of rainfall estimation in France. The spatial variationanalysis of normal temperature and amount of rainfall in France is performed by simple linear correlations where elevationis the explanatory variable. The latter is provided in seven resolutions: 250,500 m, 1, 2, 4, 8 and 16 km. The correlationcoefficient is used to assess what is the resolution that works best. Temperatures are optimally explained by the 250 mresolution, the coarser resolutions producing lower quality results. The 2km resolution best explains the spatial variation ofrainfall.

"Table 4" of "Studies of quantum chromodynamics with the ALEPH detector"

1997

Charged particle Thrust(minor) distribution.