GPS

Purpose. The article is devoted to the analysis of the accuracy of GPS and RTK navigation and to the assessment of their impact on reducing overlaps, skips, and technological losses during field operations within precision agriculture systems. The main purpose of the study is to determine the role of different levels of satellite navigation accuracy in improving the efficiency of agricultural operations, reducing resource consumption, and increasing crop yields. Methods.

The Svalbard Islands are located in the Arctic Ocean, halfway between Norway and the North Pole. Because of this, the Svalbard Islands exhibit a number of special properties that make it an interesting region for studying interactions between the atmosphere, sea ice, and ocean. In this study, satellite signals of three points (NABG, NYA2 and NYAL) on the island of Svalbard in the Barents Sea were examined. On January 8, 2022, signal jamming effects appeared at all three points.

One of the main tasks of deploying sensor networks is determining the coordinates of nodes that are unknown at their initial placement. This problem is known as the localization problem of sensor networks. It can be solved if each node has a GPS receiver in its composition. However, such nodes are more expensive, and for networks of various purposes, for example, environmental monitoring, fixation of moving objects in a certain area, various types of IoT, and others, nodes without GPS can be used.

The article describes problems of determining the type and automatic sorting of household waste using mobile computing devices. All of the required hardware and partially software, required for implementation of this service, are already present in modern smartphones.

Objective. Investigate the effect of absolute humidity on the GPS accuracy for different durations of observation. Methods. The GPS observations with different durations over spring-autumn period at 17 permanent stations in France and 8 stations in Switzerland were chosen for initial data. These observations used four GPS networks with a different number of points (from 5 to 8) and lengths of vectors (average length varied from 5.1 to 48.6 km).

Sumatra earthquake was accompanied by the similar strains on four deformation stations. This phenomenon can be explained by the unstable state of geological environment in the field of the future earthquake. It is necessary to use the data GPS side by side with the station data in order to obtain the reliable results.

Purpose. This study assumed: experimental determination of the accuracy of coordinates of points of the geodetic network dual-frequency GNSS receivers from different manufacturers under different conditions of observations using RTK-technology; study connectivity and receiving a fixed solution RTK mode with extra-long bases (200 km). Methods. To investigate the accuracy of the coordinates in the experimental work were involved six surveying crews ukomplektovuvalysya six receivers of different manufacturers.

Purpose. The purpose of this work is to study the possibility of restoring urban traverse networks using high-precision technologies in satellite mode, real-time kinematics. Method. To achieve this goal were involved surveying six teams that were equipped with six receivers of different manufacturers. The observations were made as the "static" and in RTK-mode, and, determining the coordinates of points traverse the network Chernihiv mode performed by permanent RTK networks with different configurations and mount points.

Purpose. The purpose of this work is to study the effectiveness of using satellite technology in real-time kinematics mode for work performed to determine the areas of land of different size within a settlement. Methodology. To realize this рurpose we have conducted experimental research on satellite observation points and triangulation of polygonometry in Chernihiv and the region. During the research it was assumed to get the control coor¬dinates on the basic points from static observation.