1. A method for integrating data received from a plurality of sensors, comprising: receiving data from a plurality of sensors; determining a S/N (signal-to-noise) ratio for each sensor based on signal measurements of the received data; determining a plurality of reliability functions for the plurality of sensors from using a plurality of predetermined calculations combining each sensor reliability function which are determined and individually weighted based on said S/N ratio for each sensor and differences between predetermined operating characteristics for each sensor; and 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.