Introduction
Water Exclusion is a new optional feature of AIG algorithm added to TULIP. This removes the water area from the intersection region of AIG to give a more accurate representation of target's location. This reduces the size of the intersection region, the centroid --which is used as a location estimate for the target-- however, may not be closer to the actual target. This is illustrated in the examples below.
Examples
In this case the centroid is in water and 134km away from target. The green marker shows the actual target's location | With water exclusion the AIG centroid (red) is closer to the target with an error of 78km |