Patent ID: 8792908

Claim:
A method for determining the location of a device, wherein the device is capable of receiving/transmitting wireless signals from/to reference stations, the method comprising: providing wireless signals in the form of range information to the device, from at least three reference stations; determining a region or area surrounding each reference station, wherein each region surrounding each reference station intersects with at least one region surrounding at least one other reference station to form at least one intersecting space; defining the at least one intersecting space to delineate a device location search space; determining locations of the device within the device location search space; determining combinations of said device locations, and using a distribution analysis test to examine a skewness value of each combination; using the skewness values to eliminate and disqualify data points from a set by selecting the combinations of device positions that result in a minimum skewness value or a combination that provides a skewness value less than a pre-defined minimum threshold value; and utilizing the selected combinations to determine a refined final position of the device.