Cellular tower and base station localization

A method, comprising:

• determining, by a compute node, a plurality of estimated positions for a plurality of cells within a region using cellular signals received by a receiver at a plurality of known receiver positions within the region;
• determining, by the compute node, a plurality of first cell groups using the plurality of cells;
• determining, by the compute node, respective estimated positions for each cell group of the plurality of first cell groups;
• validating, by the compute node, each cell group of the plurality of first cell groups using the respective estimated position of each cell group and the plurality of known receiver positions;
• generating, by the compute node, a plurality of second cell groups based on the cell group validation;
• using, by the compute node, an estimated position of each cell group of the plurality of second cell groups as an estimated position of a respective base station within the region;
• and
• updating, by the compute node, a base station almanac using a respective estimated position for each of the base stations.