Error estimate concerning a target device's location operable to move in a wireless environment

A method for determining an error estimate concerning a target device's location. The target device moves and communicates in a wireless environment using signals having at least one measurable signal value. A probabilistic model of the wireless environment indicates a probability distribution...

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Bibliographische Detailangaben
Hauptverfasser:	ROOS TEEMU, MYLLYMAKI PETRI, WETTIG HANNES, TUOMINEN ANTTI, TIRRI HENRY, LAHTINEN JUSSI, VALTONEN KIMMO, KONTKANEN PETRI
Format:	Patent
Sprache:	eng
Schlagworte:	ANALOGOUS ARRANGEMENTS USING OTHER WAVES DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MEASURING PHYSICS RADIO DIRECTION-FINDING RADIO NAVIGATION TESTING TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION WIRELESS COMMUNICATIONS NETWORKS
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Beschreibung
Zusammenfassung:	A method for determining an error estimate concerning a target device's location. The target device moves and communicates in a wireless environment using signals having at least one measurable signal value. A probabilistic model of the wireless environment indicates a probability distribution for signal values at several sample points in the wireless environment. A set of observations of signal values is made and the target device's location is estimated based on the probabilistic model and the set of observations. The error estimate ( 43 ) is determined as a combination of products over several sample points (SP). Each product comprises a probability distribution ( 41 ) for the sample point in question being the target device's location and a distance function ( 43 ) between the sample point in question and the target device's estimated location.