Schematic representation of fringe-detections across a VLBI array to exemplify the exhaustive fringe-search algorithm implemented in rPICARD. A₀, B₀, C₀,  and D₀ represent prioritized reference stations, and all a_i, b_i, c_i,  and d_i are other stations in the array. Green arrows indicate successful fringe-detections (with high enough S/N) to a specific reference station, and red lines indicate non-detections. Connecting lines to dashed circles around groups of stations represent fringes to each individual station within the circle. Not all possible lines are drawn; all omitted connections are considered nondetections. The intra-scan re-referencing of the exhaustive fringe-search is accomplished through the connection of fringe detections between the reference stations.