Raffaele Santamaria

Parthenope University of Naples | Università Parthenope · Department of Science and Technology

In the field of the remote sensing, the introduction of high resolution satellite sensors has required the development of several data fusion approaches. Two kinds of images are usually acquired: multispectral and panchromatic. The first group has a lower spatial resolution but accurate spectral information while the second presents a higher spatia...

This paper demonstrates that accurate data concerning bathymetry as well as environmental conditions in shallow waters can be acquired using sensors that are integrated into the same marine vehicle. An open prototype of an unmanned surface vessel (USV) named MicroVeGA is described. The focus is on the main instruments installed on-board: a differen...

Many methods are present in literature for pan-sharpening of satellite images: they permit to transfer geometric resolution of panchromatic data to multispectral ones, but the results of their application are different. To evaluate the quality of these products, visual analysis is carried out, above all on the RGB composition to detect colour disto...

In this study, several methods to compute land surface temperatures (LST) from Landsat TM5 data are compared. Two different approaches are considered. An image based approach that takes into account atmospherically corrected data by using a dark object subtraction model (DOS-1) and computes the emissivity as NDVI function. The emissivity of a surfa...

Multipath remains one of the major challenges in Global Navigation Satellite System (GNSS) positioning because it is considered the dominant source of ranging errors, which can be classified into specular and diffuse types. We present a new method using wavelets to extract the pseudorange multipath in the time domain and breaking it down into the t...

Bathymetric data are fundamental to produce navigational chart and sea-floor 3D models. They can be collected using different techniques and sensors on board of a variety of platforms, such as satellite, aircraft, ship and drone. The MicroVEGA drone is an Open Prototype of Autonomous Unmanned Surface Vessel (AUSV) conceived, designed and built to o...

This paper is aimed at analysing the influence of the vertical deflection (DOV) in direct georeferencing (DG) of image data from an aerial digital frame camera. Without considering the value of the DOV, a systematic error is involved in the determination of the point position. This investigation has been carried out considering several values of th...

Abstract: Several studies and applications are present in literature to compare pan-sharpening methods: the greater part of them is based on indexes that relate radiometric characteristics of derived images to the correspondent original ones. Among others correlation index, RMSE (Root Mean Square Error), UIQI (Universal Image Quality Index ) and RA...

L’utilizzo integrato di layer tematici e DTM (Digital Terrain Model) rende possibile la realizzazione di modelli 3D in grado di fornire la visualizzazione contestuale della variabilità sia della morfologia sia di grandezze territoriali e/o ambientali. Le immagini ad alta risoluzione WorldView-2,presentando una ridotta dimensione del pixel a terra (...

On board of Quickbird satellite two types of sensors are present: panchromatic and multispectral. The first acquires earth images within spectral range 0.405 μm – 1.053 μm; the second acquires simultaneously four images of the same scene, each of them within shorter range of spectrum (Blue, Green, Red, Near-Infrared). Panchromatic images present ge...

Lo studio delle variazioni dei litorali, siano esse legate a fenomeni naturali o ad attività di natura antropica, è di particolare importanza al fine di prevenire danni alle persone o alle cose e alterazioni degli equilibri ambientali. In Italia il suddetto studio ha una rilevanza strategica; infatti, il bel paese può vantare circa 7900 km di costa...

L’indiscriminata aggressione della risorsa suolo ha raggiunto, già da alcuni anni, livelli di allerta preoccupanti sull’intero territorio nazionale, evidenziando la necessità di una continua azione di monitoraggio volta a conoscere entità e tipologia delle trasformazioni, primo passo per la pianificazione degli interventi atti a prevenire, contrast...

The accuracy and availability of the global geoidic model EGM2008, suggests an analysis of data for its use in geodetic as an alternative to existing local models. In this work, the research was conducted to estimate the differences between EGM2008 and ITALGEO2005, in Campania region. In particular an algorithm in Matlab® was developed in order to...

The “Agenzia del Territorio”, with the decision of April 19, 2011, provided for the calculation of income alleged property are not registered in cadastre. In this work for the calculation of rent of the property is proposed a technique that adopts multicameras digital photogrammetric aerial oblique and its dedicated software. The image obtained wit...

The NDVI (Normalized Difference Vegetation Index) requires red and infrared remotely sensed images to assess whether the vegetation is present or not. Data collected by red and infrared bands sensors can be substituted by synthetic images, with higher geometric resolution, that are obtained using pan-sharpening techniques: pixel dimensions of panch...

Satellite images are generally used in reference to cartographic representation of Gauss, but in some cases, such as for application concerning marine environment, the adaptation to Mercator Map may be necessary. GIS softwares supply functions to perform these operations, but particular attention by users must be supplied to ensure acceptable resul...

La cementificazione indiscriminata e illegale ha raggiunto livelli di allerta preoccupanti e le conseguenze incidono pesantemente sullo sviluppo urbanistico, sulla qualità del paesaggio, sull’economia e sulla sicurezza del territorio. Sviluppare metodologie volte all’individuazione ed al monitoraggio di questo tipo di illecito, è di vitale importan...

Italian coasts are interested from time by morphological modifications that in the last decades have originated in many cases a great cost-line withdrawal. A detailed cognizance on dynamics and relative consequences on territory and environment is necessary to plan actions for limiting these events and their impacts. Reconstruction of temporal shor...

One of Kyoto’s protocol targets is to limit greenhouse gas emissions produced by human activities through renewable energy and the conversion of wind energy into a useful form of energy (for example electricity) which is a kind of renewable source undergoing strong development. In this work, the study is focused on offshore aeolic parks. The term \...

In many studies and applications concerning, for example, monitoring of coastal erosion and navigation safety, it is very important to know shoreline position that, if it is not supplied by topographic survey or technical maps, can be derived from air photos or satellite images. The identification is facilitated by multispectral data that different...

Broadcast Ionospheric Correction Algorithms are used in Global Navigation Satellite System single frequency receivers positioning to compute the satellite signal delay due to the propagation through ionosphere. In this paper two ionospheric models are considered: Klobuchar model used by the U.S. Global Positioning System and NeQuick model adopted b...

In Remote Sensing, because of some parameters correlated to platform instabilities, sensor geometry, curvature and rotation of Earth, satellite images are affected by geometric distortions. A part of them is often corrected directly by the providers, while the other ones can be limited referencing the images to existing maps. In fact, when remotely...

High resolution satellite images (panchromatic: 0.5 m - 2.5 m; multispectral: 2.4 m - 5 m) can provide a valuable support to realize and update Cadastre of mines. The small size of the pixel supplies detailed data so it is possible to update the database in reference to the temporal variability of mines and to have data to monitor activities for ex...

Remote Sensing by Satellite provides concrete possibilities to produce and update maps. In fact, the evolving of optical sensors with capacity of acquisition at high geometric resolution and the availability of stereoscopic images with global cover of earth surface contribute to increase the possibilities to process remote sensed data for cartograp...

For the construction of Digital Terrain Models (DTM) multiple methods can be used: beginning from quoted points, obtained with direct relief or extracted from cartography, elevations in the nodes of the grid are determined, using interpolation methods of deterministic or stochastic type: the first are based on mathematical formulas, the seconds als...

Sometimes in GIS applications heterogeneous layers that present different geodetic data and/or different cartographic projections must be compared and overlapped. The problem involved satellite images, too. GIS softwares supply functions to perform these operations, but particular attention by users is necessary to ensure acceptable results. In thi...

I metodi di interpolazione applicati in ambiente GIS consentono di elaborare dati puntuali e ottenere da essi una modellazione continua della variabilità di una grandezza sul territorio. Diviene così possibile, ad esempio, ricostruire l’andamento delle altezze sul livello del mare e generare modelli 3d (Digital Terrain Model) o anche 2d (carte alti...

The GLONASS (Global Navigation Satellite System) is a satellite positioning system able to provide various numbers of air, marine, and any other type of users with all-weather three-dimensional positioning, velocity measuring, and timing anywhere in the world or near-earth space. As known, a GLONASS receiver performs passive measurements of pseudor...

Satellite multi-spectral images present, compared with panchromatic ones, better spectral resolution (from 0.01 μm to 0.1 μm rather than 0.3 μm or over), but greater pixel dimensions. True colour composition RGB, derived from red, green and blu wavelength bands, has geometric resolution of multi-spectral images which turns out to be therefore small...

IKONOS panchromatic images (1 m geometric resolution, 11 bit radiometric resolution) can be ortho-rectified using Polynomial Rational Functions without knowledge of the full sensor information: corrected coordinates are determined with several Ground Control Points (GCPs), of which both elevation and X,Y positioning must be known. GCPs coordinates...

For several studies and applications the availability of WEBGISs is particularly useful because they, collecting alphanumeric and cartographic data (basic and thematic), concur not only the access in web to georeferred information, but also the use of spatial analysis functions, such as, for example, operations of measure and calculation, queries,...

Riassunto Il termine WEBGIS (talvolta sostituito da WEB-based GIS, Online GIS, Distributed GIS) è utilizzato per indicare l’impiego via Internet/Intranet di funzionalità proprie dei Sistemi Informativi Geografici, in grado di rendere disponibile l'informazione georiferita ad utenti in remoto. Come nelle applicazioni non in rete, elemento di fondame...

The thematic maps concur to represent the variability of one or more phenomena on a territory, favoring the communication of information through georeferred synoptic frames and supplying bases for ulterior studies imprinted on the principles and methods of space analysis. The employment, in GIS environmernt, of topographical database containing inf...

SOMMARIO - La foce del Volturno e il litorale campano immediatamente circostante sono interessati da lungo tempo da fenomeni di alterazione morfologica che negli ultimi decenni hanno determinato un consistente arretramento della linea di costa. A monte della pianificazione degli interventi volti a limitare suddetti fenomeni e a ridurne gli impatti,...

Riassunto Il sistema di posizionamento più utilizzato per la navigazione marittima è da alcuni anni il GPS che, come è noto, fornisce la posizione della nave in riferimento al WGS84. Nei sistemi di ausilio alla navigazione marittima, quali, ad esempio, ECS (Electronic Charting System) ed ECDIS (Electronic Chart Display and Information System), al f...

Phlegraen Area is a volcanic region in Campania (South of Italy), along the Parthenopean Gulf (Tyrrhenian Sea) between Bagnoli and Cuma (Province of Naples). This very fertile and sunny land, with a mild climate and natural sheltered ports, includes Mediterranean ecosystems, mosaics of habitats, ancient oak forests as well as craters, lakes and sub...

Riassunto È opinione condivisa da molti storici che fin dall'antichità l'uomo abbia prodotto ed utilizzato cartografia nautica per supportare la scelta ed il mantenimento delle rotte, nonché per rendere più sicura la condotta delle navi. Le prime testimonianze certe risalgono al XIII secolo, ma col progredire delle conoscenze e delle tecniche molte...

Within research co-ordinated by Prof. Giorgio Manzoni of Trieste University and turned to identify and test methods and procedures for road survey using a special ve- hicle with GPS/INS equipment, routes plotting on digital maps is considered. About this aspect, taking into account that this mobile can operate not only in Italy, but also in other c...

Riassunto In base a quanto stabilito dal Decreto Legislativo n. 285 del 30.04.1992 e dal DPR n. 495 del 16.12.1992, gli enti proprietari delle strade debbono istituire e tenere aggiornato un catasto informatizzato delle reti di loro pertinenza. Con il DM varato il 4.06.2001, poi ritirato ed infine definitivamente reso operativo (Suppl. Ord. alla GU...

Riassunto La versatilità dei GIS ne rende possibile l’impiego anche per l’archiviazione e l’analisi di cartografie e altri documenti storici. Attraverso la catalogazione basata su riferimenti spaziali e temporali diviene possibile ricostruire sequenze cronologiche di eventi, individuarne cause ed effetti, coglierne legami ed interazioni. La sovrapp...

Riassunto La capacità dei GIS di archiviare, gestire ed elaborare immagini raster riferite ad entità spaziali, rende possibile l'impiego di tali sistemi anche per una banca dati costituita da cartografia storica: i file risultanti dalla scansione dei documenti vengono inseriti nell’archivio iconografico e richiamati all’occorrenza, eventualmente so...

Riassunto I Sistemi Informativi Georiferiti forniscono un importante supporto per il monitoraggio dell’ambiente: consentendo non solo di archiviare i dati acquisiti ma anche di procedere alla loro analisi ed elaborazione, essi contribuiscono in maniera determinante all’approfondimento delle conoscenze sulle dinamiche in atto e rendono possibile una...

Riassunto Utilizzando dati provenienti da rilievi topografici, fotogrammi e/o cartografie ed indicanti la variabilità delle quote (z) in funzione delle coordinate planimetriche (x,y), la rappresentazione della morfologia del territorio può essere effettuata attraverso diverse tipologie di modelli digitali. Una opzione è costituita dal TIN (Triangul...

In this paper both Least Squares and Kalman filtering methods are applied and compared to achieve the astronomical latitude of a station by applying the Time Differences method.

In this paper both Least Squares and Kalman filtering methods are applied and compared to achieve the astronomical latitude of a station by applying the Time Differences method.

In this paper some interesting properties of circular orbiting satellites' ground traces are pointed out. It is shown how such properties are typical of some spherical and plane curves that look like flowers both in their name and shape. In addition, the choice of the best satellite constellations satisfying specific requirements is strongly facili...

In this paper the authors obtain analytical expressions for the ground traces of synchronous polar satellites on the polar orthographic projection, confirming that they are circles and pointing out a simple graphic method for the mapping of the subsatellite point.

In this paper the aspects and the capability of GPS marine applications along with some considerations on GPS marine use are pointed out. In particular three kinds of application fields are considered: low, medium, and high performances as to the required accuracy level. Finally kinematic applications and results as well as comparison of kinematic...

In this paper two devices as applied to a marine sextant are presented. A night viewer replaces the usual telescope to allow observation of the horizon in darkness. In addition an automatic reading of altitude is made practicable by a ten-bit encoder mounted on the index arm. In this way the proposed Celestial Navigation Automated Global System may...

An interesting feature of a particular map projection, namely the polar orthographic projection about the representation of earth tracks of satellite motions is given. Since on this map tracks relative to the synchronous circular orbits are represented with circumferences and by considering their simple and easy plotting, it is a very useful tool i...