Patent ID: 9189108
Filing Date: 2015-11-17
Classification: G01S,G06F

Abstract:
1. A method of determining a position of an object, comprising: detecting, by one or more receivers, an object based on an acoustic signal transmitted by one or more transmitters; determining a relative position of the detected object with respect to the one or more receivers and the one or more transmitters; matching the determined relative position of the detected object to a zone among a plurality of zones, assigning a weight to at least one pair of receivers and transmitters based on the matched zone; selecting, based in part on the assigned weight, at least three pairs of receivers and transmitters, having a greater assigned weight than another pair, wherein a first weight assigned to a first pair is greater than a second weight assigned to a second pair whenever an error reflection of the detected object relative to the first pair is less than an error reflection of the detected object relative to the second pair, each pair including a receiver from the one or more receivers and a transmitter from the one or more transmitters; and determining a three-dimensional coordinate position of the detected object using the selected at least three pairs of receivers and transmitters.