Accession Number : ADD018729

Title :   Constant False Probability Data Fusion System

Descriptive Note : Patent, filed 6 Nov 92, patented 26 Aug 97

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Pawlak, Robert J

Report Date : 26 Aug 1997

Pagination or Media Count : 6

Abstract : A system for determining whether a given phenomenon has occurred based on multiple sensor decisions is provided. Each sensor samples input data and attempts to decide if the given phenomenon exists. These sensor decisions are provided to the data fusion processor. The data fusion processor uses a sum of the sensor decisions multiplied by a logarithmic gain indicating the relative reliability of each sensor to generate a test existence metric. The test existence metric is compared to two threshold limits. The results of this comparison are used to provide a final decision indicating the existence of the given phenomenon. An optimization is used to determine the threshold values used in the threshold table to guarantee that the false alarm rate and the data fusion processor is constant, even in cases where data from some sensor is missing.

Descriptors :   *SIGNAL PROCESSING, *DATA FUSION, *FAULT TREE ANALYSIS, *PATENTS, TEST AND EVALUATION, OPTIMIZATION, FALSE ALARMS, RELIABILITY, MULTISENSORS, WARNING SYSTEMS

Subject Categories : Electrical and Electronic Equipment
      Computer Systems

Distribution Statement : APPROVED FOR PUBLIC RELEASE