1. A process to develop a reference database in conjunction with a system for stationary object detection, comprising the steps of: 1) acquiring signals from at least one sensor, said sensor capable of sensing target objects and generating data related to said target objects; 2) storing said data from said at least one sensor in a temporary storage buffer; 3) determining the location of said at least one sensor; and 4) indexing said data with respect to at least one of said target object data or said sensor location for subsequent comparison to real time data acquired from at least one sensor located on a mobile machine or vehicle to evaluate whether said target object is or is not a normally-present object.