Kinematic Performances Comparisons Between Galileo, GPS And Glonass Satellite Positioning Systems

The initial Galileo satellite positioning services, starting from the 15 December 2016, became available with a formal announcement of the European Commission. This was the first step toward the Galileo system Full Operational Capability (FOC) and allowed many researchers to test the new system. The aim of this paper is to show some results of kinematic tests involving a GNSS multi-constellation receiver able to acquire the Galileo Open Service (OS) signal. The acquired data were compared with the outputs obtained by a Mobile Mapping System (MMS) implementing integrated high-performance GPS/INS measurements. Using GrafNav software version 8.80 all the possible operative combinations were tested and analyzed. The results, referred to the performed experimental test, show that the new European system is characterized by a better planimetric performance with respect to the other systems whereas, from an altimetric point of view, the GPS and Glonass systems perform bette

Analisi delle prestazioni di rilievi cinematici Galileo con ricevitori GNSS e MMS

La ricerca ha riguardato la definizione, ottimizzazione ed esecuzione di test cinematici con utilizzo di dati interferenziali multi-frequenza acquisiti con ricevitori multi-costellazione e con l’utilizzo di dati GPS, GLONASS, Galileo, in modalità interferenziale differenziale. I dati GNSS sono stati analizzati utilizzando tecniche di acquisizione ed elaborazione dei dati in post-processing mediante confronto con i dati 3D ottenuti da veicolo MMS (Mobile Mapping System) equipaggiato con strumentazione GPS/INS ad alte prestazioni

Kinematic Galileo and GPS Performances in Aerial, Terrestrial, and Maritime Environments

On 15 December 2016, the European Commission (EC) declared the provision of the Galileo Initial Services (IS). This marked a historical milestone in the Galileo program, towards the reaching of its Full Operational Capability. This allows users to navigate with performance-accuracy levels either matching or exceeding those obtained with other GNSS. Under the delegation of the EC, the European Union Agency for the Space Programme (EUSPA) has assumed the role of the Galileo Service Provider. As part of this service provision, the primary mission of the Galileo Reference Centre (GRC) is to provide the EUSPA and the EC with independent means for monitoring and evaluating the performance of the Galileo services, the quality of the signals in space, and the performance of other GNSS. This mission includes significant contributions from cooperating entities in the European Union (EU) Member States (MS), Norway and Switzerland. In particular, for a detailed assessment of the Galileo performance, these contributions include (but are not limited to) periodic dynamic campaigns in three different environments (aerial, terrestrial, and maritime). These campaigns were executed in the frame of the GRC-MS Project and use multi-constellation receivers to compare the navigation performance obtained with different GNSS. The objective of this paper is to present the numerical results obtained from these campaigns, together with several considerations about the experimental setup, the methodology for the estimation of the reference («actual») trajectory, and the reasons for possible performance degradations

HARMO-DATA Project \u2013 cross border spatial data harmonization using INSPIRE model

HARMO-DATA is an ongoing project, funded by EU in the framework of the INTERREG V-A Italy-Slovenia 2014-2020 Programme. It involves different stakeholders, target groups and end-users in three regions: Friuli-Venezia-Giulia (Italy), Veneto (Italy) and Slovenia. The main purpose of this project is to develop common solutions for more efficient cross-border spatial data management \u2013 by harmonizing the existing spatial data, implementing a cross-border spatial data platform, and developing a common protocol for the harmonization of territorial data. It will provide an instrument to define the specific obligations and rights of the involved parts \u2013 in terms of data harmonization, exchange, use and maintenance. Five pilot case studies were identified by the project partners \u2013 in cooperation with public and private end-users, and additional stakeholders. The core use cases of the project relate to spatial data search, view and download, and the harmonization model for spatial datasets applies the INSPIRE data specifications. A joined common spatial data platform was established as an extension of the existing search-view-download platforms (metadata systems), upgraded and improved to better enable open data access by users from both Italy and Slovenia. The common spatial HARMO-DATA data platform, as well as, a joint protocol for cross-border spatial data harmonization, have been formalized in an official bilateral agreement

HARMO-DATA Project – cross border spatial data harmonization using INSPIRE model

HARMO-DATA is an ongoing project, funded by EU in the framework of the INTERREG V-A Italy-Slovenia 2014-2020 Programme. It involves different stakeholders, target groups and end-users in three regions: Friuli-Venezia-Giulia (Italy), Veneto (Italy) and Slovenia. The main purpose of this project is to develop common solutions for more efficient cross-border spatial data management – by harmonizing the existing spatial data, implementing a cross-border spatial data platform, and developing a common protocol for the harmonization of territorial data. It will provide an instrument to define the specific obligations and rights of the involved parts – in terms of data harmonization, exchange, use and maintenance. Five pilot case studies were identified by the project partners – in cooperation with public and private end-users, and additional stakeholders. The core use cases of the project relate to spatial data search, view and download, and the harmonization model for spatial datasets applies the INSPIRE data specifications. A joined common spatial data platform was established as an extension of the existing search-view-download platforms (metadata systems), upgraded and improved to better enable open data access by users from both Italy and Slovenia. The common spatial HARMO-DATA data platform, as well as, a joint protocol for cross-border spatial data harmonization, have been formalized in an official bilateral agreement

Il progetto Interreg Italia-Slovenia HARMO-DATA: un geoportale per la condivisione di dati territoriali transfrontalieri armonizzati

Il progetto Interreg HARMO-DATA, finanziato nell’ambito del Programma Interreg V-A Italia-Slovenia 2014-2020, è stato avviato ufficialmente a Settembre 2017 e si è concluso il 30 giugno 2019. Il Partenariato era composto da: Geodetski In titut Slovenije, Ljubljana, Slovenia (coordinamento), Geodetska Uprava Republike Slovenije, Igea S.r.l. Ljubljana, Slovenia, Insiel S.p.a. Trieste, GeoSNav Lab - Dipartimento di Ingegneria e Architettura, Università degli Studi di Trieste - Terre S.r.l. Mestre. Hanno partecipato inoltre in qualità di partner associati: Regione Veneto, Regione Friuli Venezia Giulia e Ministero sloveno per l’ambiente ed il territorio. Obiettivo generale del Progetto è stato quello di rafforzare la capacità di cooperazione istituzionale transfrontaliera tra le autorità pubbliche e i responsabili della pianificazione territoriale, promuovendo la creazione di soluzioni condivise per il coordinamento e un’efficace gestione del territorio

Analisi di precisione di DGPS in tempo reale con correzioni da satelliti geostazionari

Vengono riportati gli studi eseguiti nel settore del posizionamento civile da satelliti geostazionari WAAS ed EGNOS quale integrazione al sistema GPS

Single-Frequency Kinematic Performance Comparison between Galileo, GPS, and GLONASS Satellite Positioning Systems Using an MMS-Generated Trajectory as a Reference: Preliminary Results

The initial Galileo satellite positioning services, started on December 15, 2016, became available with a formal announcement by the European Commission. This first step toward the Galileo system Full Operational Capability (FOC) has allowed many researchers to test the new system. The aim of this paper is to illustrate the results and the conclusions of a kinematic test involving a GNSS (Global Navigation Satellite System) multi-constellation receiver able to acquire the Galileo Open Service (OS) signal. The produced outputs were compared to a reference trajectory obtained from a Mobile Mapping System (MMS) implementing integrated high-performance GPS/INS measurements. By exploiting the CUI (command user interface) of the open source library RTKLIB, a reduced operative status was simulated for GPS and GLONASS. Specifically, all the possible operative combinations were tested and, when possible, statistically assessed. This was necessary to offer a fair comparison among the tested constellations. The results, referred to the reference trajectory, show that the new European system is characterized by a better planimetric performance with respect to the other systems, whereas, from an altimetric point of view, the GPS and GLONASS systems perform better

The Efficiency of geodetic and low-cost GNSS devices in urban kinematic terrestrial positioning in terms of the trajectory generated by MMS

The quality of geospatial data collection depends, among other things, on the reliability and efficiency of the GNSS receivers or even better integrated GNSS/INS systems used for positioning. High-precision positioning is currently not only the domain of professional receivers but can also be achieved by using simple devices, including smartphones. This research focused on the quality of 2D and 3D kinematic positioning of different geodetic and low-cost GNSS devices, using the professional mobile mapping system (MMS) as a reference. Kinematic positioning was performed simultaneously with a geodetic Septentrio AsteRx-U receiver, two u-blox receivers—ZED-F9P and ZED-F9R—and a Xiaomi Mi 8 smartphone and then compared with an Applanix Corporation GPS/INS MMS reference trajectory. The field tests were conducted in urban and non-urban environments with and without obstacles, on road sections with large manoeuvres and curves, and under overpasses and tunnels. Some general conclusions can be drawn from the analysis of the different scenarios. As expected, some results in GNSS positioning are subject to position losses, large outliers and multipath effectshowever, after removing them, they are quite promising, even for the Xiaomi Mi8 smartphone. From the comparison of the GPS and GNSS solutions, as expected, GNSS processing achieved many more solutions for position determination and allowed a relevant higher number of fixed ambiguities, even if this was not true in general for the Septentrio AsteRx-U, in particular in a surveyed non-urban area with curves and serpentines characterised by a reduced signal acquisition. In GNSS mode, the Xiaomi Mi8 smartphone performed well in situations with a threshold of less than 1 m, with the percentages varying from 50% for the urban areas to 80% for the non-urban areas, which offers potential in view of future improvements for applications in terrestrial navigation

The Actual Perspectives of GNSS Multi-constellation Services and Receivers for Kinematic Applications

11 years ago, on 28 December 2005, was launched the Europe\u2019s very first navigation satellite, GIOVE-A (Galileo In-Orbit Validation Element-A), thus starting the deployment of Galileo, the EU\u2019s own global satellite navigation system. The deployment phase of Galileo suffered of many difficulties and delays but recently the Programme has been accelerated and, in the last months, the pace of deploying Europe\u2019s own satellite navigation system continued to increase with the launch of the 18th Galileo satellite, on 17 November 2016. It is expected that the system will be fully operational by 2020, with actual implementation costs in the range of 5.23 billion of euros and 7 billion foreseen till 2020 for EGNOS e Galileo Projects. The excellent performances of Galileo satellites, as measured on the ground, \u201callows Europe to join the club of the worldwide providers of satellite navigation services\u201d. Galileo will be integrated by EGNOS (European Geostationary Navigation Overlay service). Consisting of three geostationary satellites and a network of ground stations, EGNOS achieves its aim by transmitting a signal containing information on the reliability and accuracy of the positioning signals sent out by GPS. It allows users, in Europe and beyond, to determine their position to within 1.5 m (1\u3c3). Since the first signals became available to users, demonstrations have shown the usefulness of EGNOS services in every type of kinematic application, in the aerial, maritime and terrestrial domain. As part of \u2018GIANT\u2019 (GNSS Introduction in the AviatioN sector), tests have proved the benefits of EGNOS when landing at airports with fewer aids or when helicopters make emergency landings. The integrity data provided by EGNOS is particularly suited for applications driven by stringent safety constraints during critical navigation phases such as landing aircraft, manoeuvring ships in narrow channels, and tracking the precise locations of trains. Actually many applications are based on EGNOS, and the Open Service (OS), available since October 2009, is widely used in the agricultural world, where it has proved valuable for reducing the use of fertilisers, thus helping to protect the environment. The accuracy of the Open Service has also proved useful to guide blind people in the city via mobile phones\u2014like car drivers using GPS. Towards the certification of the Safety of Life service, many tests have been performed in the aviation, maritime and rail sectors. Mapping of fixed assets, controlling mining machinery and other professional uses are potential applications that could benefit from the EGNOS Commercial Data. Demonstrations showing the potential of EGNOS have been performed in many other sectors and many applications are just waiting to be thought of, such as for rail, road and maritime users. The European Commission (EC) estimates that 6\u20137% of European GDP (Gross Domestic Product)\u2014around 800 billion by value\u2014is already dependent on satellite navigation. Any GNSS device available on the marked is able to receive GPS, GLONASS and EGNOS signals and globally 40% of GNSS receivers are ready to receive Galileo signals. Multi-constellation services and receivers are used by millions of persons in the world, being part of their daily life, towards a future where geo-localisation of persons and things will become essential for safety and well-being. In this paper the current trend and benefits of multi-constellation services and receivers as well as innovative kinematic research applications, carried out by GeoSNav Lab, Department of Engineering and Architecture, University of Trieste, research team, using multi-constellation receivers, are presented