1. A sensing system for determining a target position, comprising: at least two sensors configured to generate target position information; at least two local trackers connected to the sensors and configured to; receive the target position information; generate at least two local aimpoints relating to the target; and generate a local reliability value for each of the at least two local aimpoints; and a combiner connected to the local trackers and configured to: receive the local aimpoints and generate a global aimpoint for the target; generate the global aimpoint according to the local aimpoints and a weight for each local aimpoint, wherein the weight for each local aimpoint is based on the local reliability value for the local aimpoint; and generate a global reliability value for each of the local aimpoints, wherein the weight attributed to each local aimpoint is based on the local reliability values and the global reliability values.