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Table 3 Mean location errors of different grid distances with four APs

From: RSSD-based 3-D localization of an unknown radio transmitter using weighted least square and factor graph

Grid distance RSSD-KNN RSSD-FG RSSD-WLSFG
1.5 m 1.57 m 1.31 m 1.18 m
2 m 1.79 m 1.52 m 1.33 m