Patent ID: 6842715

Claim:
A method for determining a position of a device, comprising: receiving a plurality of pseudo range measurements from a transmitting source; adjusting each of the plurality of pseudo range measurements for time correction and then arranging each of the plurality of pseudo range measurements in order of smallest value to largest value to form a pseudo range interval with the smallest value and the largest value as endpoints; dividing the pseudo range window into a plurality of increments having a plurality of grid points; aligning a sliding pseudo range window having a width over the pseudo range interval at a first of the plurality of grid points and counting the number of pseudo range measurements within the sliding pseudo range window, and them repeating for each of the plurality of grid points within the pseudo range interval; selecting a best window based on a maximal number of pseudo range measurements within the sliding pseudo range window; comparing the maximal number with an incidence threshold; and then based on the comparison, determining an average pseudo range value; wherein the sliding pseudo range window width is 300 meters.