1. A method for integrating data received from a plurality of sensors, comprising: receiving data from a plurality of sensors having overlapping scanning areas; determining a plurality of reliability functions for the plurality of sensors, the plurality of reliability functions being based upon individually weighted reliability functions for each sensor; selecting one or a predetermined combination of said plurality of reliability functions as a current reliability function based on the selected one or predetermined combination satisfying predetermined thresholds; and based upon data from the sensors and at least one selected reliability function, determining whether or not there is an object of interest within the overlapping scanning areas.