Patent ID: 8049668
Filing Date: 2011-11-01
Classification: G01S

Abstract:
1. A method of determining a location of a first device, comprising: (a) providing at least three sensors separated and spaced apart from each other; (b) determining estimated location data for the first device for each sensor or unique sensor pair; (c) determining an estimated location of the first device using the estimated location data for each sensor or unique sensor pair; (d) determining residual values for the estimated location data for each sensor or unique sensor pair, wherein each residual value is determined based on a difference between the estimated location of the first device and the estimated location data for a corresponding one of the sensors or unique sensor pairs; (e) converting the residual values into corresponding weights for the estimated location data for each sensor or unique sensor pair; (f) weighting the estimated location data for each sensor or unique sensor pair by its corresponding weight; and (g) updating the estimated location of the first device using the weighted estimated location data for each sensor or unique sensor pair.