Inverse Distance Weighted (IDW) Technique
"Interpolation technique in GIS that estimates unknown values with specifying search distance, closest points, power setting & barriers." (Chen and Liu 2012)
Chen, Feng-Wen, and Chen-Wuing Liu. "Estimation of the spatial rainfall distribution using inverse distance weighting (IDW) in the middle of Taiwan." Paddy and Water Environment 10, no. 3 (2012): 209-222.