1. An assembly task verification system (ATVS), said system comprising: a work cell within a localized environment, the work cell utilized for assembling a structure using a tool configured to operate on a feature of a structure to be assembled; an indoor global positioning system configured to use vector bars to define a point of space for locating at least one location sensor affixed to the tool within the work cell to provide three-dimensional location coordinates of the at least one location sensor; and an indoor object detection system base station comprising at least one sensor beacon and a base station communicatively linked to the at least one location sensor, the base station configured to: acquire location coordinates from the at least one locations sensor within the work cell upon receipt of an event signal from the tool and identify one of a plurality of candidate features as the feature operated on by the tool at the time the event signal was received based on a probability calculation for each of the candidate features that each respective candidate feature is the feature operated on by the tool.