Patent ID: 6587692
Filing Date: 2003-07-01
Classification: G01S

Abstract:
A method for determining location of a terminal, comprising the steps of:(a) assigning a weight value to at least one of a set of three or more distance measurements corresponding to three or more different sources relative to the terminal to generate a weighted set of distance measurements, wherein: the terminal is a mobile unit in a wireless network; at least one of the distance measurements is a wireless network-based distance measurement; at least one of the distance measurements is a satellite-based distance measurement; and the at least one wireless network-based distance measurement and the at least one satellite-based distance measurement are assigned different weight values; (b) assigning a value for an insertion parameter; and (c) performing weighted ridge regression (WRR) processing based on the weighted set of distance measurements and the insertion parameter to determine a WRR estimate representing the location of the terminal.