1. A system for localization of a radio frequency source in a region comprising: a first plurality of antennas disposed about the region, the first plurality of antennas including two or more pairs of antennas, the antennas of each of the two or more pairs of antennas being separated by a distance of greater than one half of a wavelength of a radio frequency signal emitted from the radio frequency source, a first pair of antennas of the two or more pairs of antennas being associated with a first receiving pattern with a first plurality of grating lobes and a second pair of antennas of the two or more pairs of antennas being associated with a second receiving pattern with a second plurality of grating lobes; a second plurality of antennas disposed about the region; a first radio frequency positioning module in communication with the first plurality of antennas and configured to determine a plurality of spatially separated candidate locations in the region for the radio frequency source, at least some candidate locations of the plurality of spatially separated candidate locations being located at intersections of grating lobes of the first plurality of grating lobes and grating lobes of the second plurality of grating lobes; a second radio frequency positioning module in communication with the second plurality of antennas and configured to determine a sub-region of the region, the sub-region including the radio frequency source; and a resolution module for receiving the determined plurality of spatially separated candidate locations and the determined sub-region and for identifying a subset of the candidate locations in the sub-region of the region.