Sökning: "TDoA"
Visar resultat 6 - 9 av 9 avhandlingar innehållade ordet TDoA.
6. Towards Precise Localisation : Subsample Methods, Efficient Estimation and Merging of Maps
Sammanfattning : Over the last couple of years audio and radio sensors have become cheaper and more common in our everyday life. Such sensors can be used to form a network, from which one can obtain distance measures by correlating the different received signals. LÄS MER
7. An electronic warfare perspective on time difference of arrival estimation subject to radio receiver imperfections
Sammanfattning : In order to ensure secure communication in digital military radio systems, multiple methods are used to protect the transmission from being intercepted by enemy electronic warfare systems. An intercepted transmission can be used to estimate several parameters of the transmitted signal such as its origin (position or direction) and of course the transmitted message itself. LÄS MER
8. On Timing-Based Localization in Cellular Radio Networks
Sammanfattning : The possibilities for positioning in cellular networks has increased over time, pushed by increased needs for location based products and services for a variety of purposes. It all started with rough position estimates based on timing measurements and sector information available in the global system for mobile communication (gsm), and today there is an increased standardization effort to provide more position relevant measurements in cellular communication systems to improve on localization accuracy and availability. LÄS MER
9. Time of Flight Estimation for Radio Network Positioning
Sammanfattning : Trilateration is the mathematical theory of computing the intersection of circles. These circles may be obtained by time of flight (ToF) measurements in radio systems, as well as laser, radar and sonar systems. A first purpose of this thesis is to survey recent efforts in the area and their potential for localization. LÄS MER
