POSITIONING TECHNIQUE

PROBLEM TO BE SOLVED: To evaluate the position of a target device in a high-frequency network by maintaining a probabilistic model on several sample points indicating the predicted distribution of a signal value at a certain position. SOLUTION: The target device observes a signal value OS and, at th...

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Bibliographische Detailangaben
Hauptverfasser:	PAULI MISIKANGAS, LARE LEKMAN
Format:	Patent
Sprache:	eng
Schlagworte:	ANALOGOUS ARRANGEMENTS USING OTHER WAVES CALCULATING COMPUTING COUNTING DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES ELECTRIC COMMUNICATION TECHNIQUE ELECTRIC DIGITAL DATA PROCESSING ELECTRICITY LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MEASURING PHYSICS RADIO DIRECTION-FINDING RADIO NAVIGATION TESTING WIRELESS COMMUNICATIONS NETWORKS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To evaluate the position of a target device in a high-frequency network by maintaining a probabilistic model on several sample points indicating the predicted distribution of a signal value at a certain position. SOLUTION: The target device observes a signal value OS and, at this time, a series of the observation values and each position compose an indirect Markov model. A graph G models the topology of a positioning environment. The graph indicates a plurality of nodes, namely positions allowed in the environment, and a plurality of arcs, namely position transitions allowed between two nodes. The graph G is used to evaluate the position of the target device, based on the probabilistic model PM and the series OS of observation values. COPYRIGHT: (C)2009,JPO&INPIT