It presents the use of global navigation technology, NAVSTAR-GPS and GLONASS systems in maritime navigation and some aspects that are encountered in maritime navigation, using these systems. The use of GNSS technology in maritime navigation is beneficial and at the same time it can be used in the civil domain, the system which is eminently civil, being the Galileo European positioning system. Commercial vessels sailing on the seas and on the planetary oceans can be monitored and managed in real time, if the GNSS-type global positioning systems are used. The global positioning systems of the GNSS type include all the positioning systems, but especially those of the NAVSTAR-GPS, GLONASS, GALILELO, BEIDOU type. The advantages of using in the navigation of global positioning systems is unmatched and it makes sailing much more useful and safer on the seas and oceans of the earth. River navigation is a component of trade and water transport, which can be managed using modern means of navigation by satellite type GNSS, Romania participating with neighboring countries in different European programs. There is a brief introduction of the notion of global positioning system to the general mode and a specific appreciation of each global positioning system in part and to the general mode of GNSS global positioning systems. Important aspects are presented in the use of GNSS technology, in the maritime and related fields, the advantages of this technology in relation to the classical technologies and the judicious cooperation in the extreme cases between the two technologies. The sources of positioning errors in the use of global GNSS positioning systems and the methods by which they can be eliminated or reduced are presented. It presents the calculation of the navigation coordinates in different projection systems and the stages of transformation of the coordinates in the WGS-84 system, specific to the Navstar-GPS positioning system in different coordinate and projection systems. Maritime navigation is guided by specific methods, but lately, global positioning systems are a beneficial presence in the steering and navigation component of the world’s seas and oceans. Finally, conclusions and proposals regarding the judicious and beneficial use of the GNSS positioning system in navigation are presented.
The geotechnical study resulted from the need to know the foundation land in order to properly place the investment and includes the geotechnical exploration works performed in the site area, with the aim of providing the data necessary to solve the basic problems specifying the aspects related to: the stratification of the land on the site; physical-mechanical characteristics of existing soils; admissible pressures at different foundation levels; probable settlements; framing of field excavations; frost depth; seismic framing; hydrogeological data.
This paper presents the possibilities and benefits of using drones in agriculture, especially in precision agriculture. In the first part of the paper, basic notions regarding drones in the agricultural context, legislative and flight safety aspects are presented, defined and clarified. In the second part of the paper, the most used sensors in agriculture are introduced, the benefits and the main stages of using drones in agriculture are presented, related to the life span of a crop and the duration of the agricultural year. This paper encourages and justifies the use of drones both in current agricultural operations and by applying photogrammetric methods and generating digital products such as orthophoto plans, thematic maps and digital terrain models.
The paper aims to conduct a research, in order to analyze how to systematically register properties in the integrated system of cadastre and land book of buildings on the territory of three cadastral sectors belonging to the administrative-territorial unit Mediaș, Sibiu County. The objective of the work is represented by the accomplishment of the systematic cadastral works in the analyzed area. The instrument used to carry out the geodetic and topographic works necessary to carry out this project is the Leica TC (R) 407 total station, which is part of the TPS400 range. The verification of the support network was performed both from a planimetric point of view using the conditional measurements method and altimetrically using the trigonometrical leveling at long distance method. Two new points were included, the compensation of their coordinates was made using the indirect measurements method. In the present paper, the real estate fund cadastre was made, the evidence and the systematic inventory were made, from a quantitative, qualitative and legal point of view of the 56 buildings from the 3 cadastral sectors afferent to the studied administrative-territorial unit. Following the work, it is found that the method of registration in the Land Book through the Systematic Cadastre is an efficient solution and an alternative to the Sporadic Cadastre addressed at national level that facilitates field work, time and allows the determination of land areas in cadastral sectors. with better accuracy.
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