Accession Number : ADA262713


Title :   An Expert System for Processing Uncorrelated Satellite Tracks


Descriptive Note : Master's thesis


Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CA


Personal Author(s) : Hecker, Michael A


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a262713.pdf


Report Date : 17 Dec 1992


Pagination or Media Count : 240


Abstract : Through an array of ground based radar sights and optical cameras, the United States military tracks objects in near and far Earth orbit. The sensors provide epoch and ephemeris information that is used to update a database of known objects. While a majority of the sensor observations are matched to their corresponding satellites, a small percentage are beyond the capabilities of current software and can not be correlated. These uncorrelated targets, UCT's, must be manually fitted by orbital analysts in a labor intensive process. As an alternative to this human intervention, the use of artificial intelligence techniques to augment the present computer code was explored. Specifically, an expert system for processing UCT's at the Naval Space Surveillance Command was developed. Rules were generated through traditional knowledge engineering methods and by a novel application of machine learning. The initial results are very good with the operational portions of the system matching the performance of the experts with an accuracy of 99%. Although not yet complete, the code developed in this research definitely shows the potential of using artificial intelligence to process UCT'S.


Descriptors :   *DATA PROCESSING , *RADAR TRACKING , *EXPERT SYSTEMS , *OPTICAL TRACKING , DATA BASES , ORBITS , NEURAL NETS , SPACE SURVEILLANCE , DYNAMICS , ACCURACY , RADAR , MATCHING , GROUND BASED , ARTIFICIAL INTELLIGENCE , MACHINES , SIGHTS , CAMERAS , ARTIFICIAL SATELLITES , MECHANICS , TARGETS , TRACKS , EPHEMERIDES , ANALYSTS , LEARNING , THESES , ARRAYS , OBSERVATION , COMPUTERS , EARTH ORBITS , UNITED STATES , SOFTWARE ENGINEERING


Subject Categories : Computer Programming and Software
      Active & Passive Radar Detection & Equipment


Distribution Statement : APPROVED FOR PUBLIC RELEASE