CA3089933A1
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Ad hoc positioning of mobile devices using near ultrasound signals
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CN111919134A
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Location-based functionality using acoustic location determination techniques
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Location system using ultrasound
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Location determination using acoustic models
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Transmitting device for use in location determination systems
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US2019204403A1
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Location Determination System Having Rotating Identifiers for Distinguishing Transmitters
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Location determination system having mesh infrastructure to reduce power consumption
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Position determination system having a deconvolution decoder
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Position determination system having a deconvolution decoder using a joint snr-time of arrival approach
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Location determination using acoustic-contextual data
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GB201713639D0
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Position determining system
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Ultrasound position-determination system
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GB201507208D0
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Location system
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GB201213846D0
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Location system
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GB201110560D0
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Radio communication system
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Location system
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Position determination system
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Acoustic position-determination system
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JP2009037643A
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System for managing and controlling object or person
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AU2008290379A1
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Ultrasound detectors
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