Sökning: "GNSS positioning"
Visar resultat 16 - 20 av 24 avhandlingar innehållade orden GNSS positioning.
16. Frequency Transfer Techniques and Applications in Fiber Optic Communication Systems
Sammanfattning : Modern society is dependent on communications and the developments of these increases constantly through a seemingly endless demand for communication services and thereby synchronization and time. This is confirmed by a vast range of research on communications, irrespective of technology and protocol. LÄS MER
17. Time and Frequency Transfer using Passive Techniques in Active Fiber Optic Networks
Sammanfattning : For the modern society, high precision time and frequency transfer have become crucial since a large number of systems, such as telecommunication systems, require precise and stable synchronization. Electric power companies use synchronized systems for taking stability measurements and searching for errors in their networks. LÄS MER
18. Global Navigation Satellite Systems: Applications With Time Scales From Seconds to Decades
Sammanfattning : Global Navigation Satellite Systems (GNSS) can be used formany applications with time scales varying from seconds to decades.For~example, due to the ability of high-rate sampling, GNSStechniques are suitable for the detection of the large co-seismicdisplacements, which are dominated by low-frequency signals andtherefore can be recorded at a few Hertz and estimated with rathersmall uncertainty (millimetres). LÄS MER
19. Localization for Autonomous Vehicles
Sammanfattning : There has been a huge interest in self-driving cars lately, which is understandable, given the improvements it is predicted to bring in terms of safety and comfort in transportation. One enabling technology for self-driving cars, is accurate and reliable localization. LÄS MER
20. On Landmark Densities in Minimum-Uncertainty Motion Planning
Sammanfattning : Accurate self-positioning of autonomous mobile platforms is important when performing tasks such as target tracking, reconnaissance and resupply missions. Without access to an existing positioning infrastructure, such as Global Navigation Satellite Systems (GNSS), the platform instead needs to rely on its own sensors to obtain an accurate position estimate. LÄS MER