Sökning: "satellite navigation"
Visar resultat 6 - 10 av 54 avhandlingar innehållade orden satellite navigation.
6. A study of precise position measurements using space geodetic systems
Sammanfattning : .... LÄS MER
7. Dude, Where's My Car? Cellular Navigation for Autonomous Driving
Sammanfattning : Position and direction estimation is useful for numerous engineering applications for commercial, scientific, and military purposes. Technology that fuses observations of signals broadcast by Global Navigational Satellite Systems (GNSS) with inertial measurements is standard for electronic devices, but this requires at least a periodically unobstructed view of the sky to perform reliably. LÄS MER
8. Migration strategies of raptors – spatio-temporal adaptations and constraints in travelling and foraging
Sammanfattning : My dissertation is about bird migration and addresses questions about how raptors adapt to the fluctuating environments during the transition seasons between breeding and wintering. The migration is highly affected by local prey abundance, foraging strategies, weather conditions and landscape patterns along the migration routes as well as navigation and orientation mechanisms and cues. LÄS MER
9. Sea Ice Concentration Estimation and Ice Type Classification from Dual-Frequency Satellite Synthetic Aperture Radar
Sammanfattning : The sea ice cover in the Arctic has undergone dramatic changes in recent years. The perennial sea ice extent is decreasing by 12.2 % per decade while annual mean sea ice thickness has decreased by more than 2 m for the central Arctic Basin from 1975 to 2012. LÄS MER
10. Retrieval of Ocean Surface Currents and Winds Using Satellite SAR backscatter and Doppler frequency shift
Sammanfattning : Ocean surface winds and currents play an important role for weather, climate, marine life, ship navigation, oil spill drift and search and rescue. In-situ observations of the ocean are sparse and costly. Satellites provide a useful complement to these observations. LÄS MER