Patent ID: 8035562

Claim:
In a Global Positioning System (GPS) receiver system comprising a plurality of antenna elements adapted to receive signals from a plurality of GPS satellites within a field of view, a method of determining a direction to a signal source of interest comprises the steps of: combining signals from the plurality of antenna elements to form at least a first beam and a second beam, wherein: the first beam does not overlap with the second beam; and the first beam and the second beam taken together substantially cover the field of view; independently processing the first beam and the second beam; examining the processed data to determine whether the signal source of interest is associated with the first beam or with the second beam; reducing the field of view to comprise a region covered by the one of the first beam and the second beam with which the signal source of interest is associated; repeating the steps of forming a first beam and a second beam with respect to the reduced field of view, independently processing the first beam and the second beam, examining the processed data, and reducing the field of view, until a direction to the signal source of interest is determined with sufficient precision.