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NAVAL POSTGRADUATE SCHOOL Monterey California , THESIS AUTOMATED PERFORMANCE EVALUATION TECHNIQUE by Brian E. Skimmons March 1992 Thesis Advisor: Donald V.Z. Wadsworth Approved for public release; distribution is unlimited . UNCLASSIFIED SECURITY CLASSIFICATION OF THIS PAGE REPORT DOCUMENTATION PAGE FormApproved OMBNo 07040188 1a REPORT SECURITY CLASSIFICATION lb RESTRICTIVE MARKINGS UNCLASSIFIED 2a SECURITY CLASSIFICATION AUTHORITY 3 DISTRIBUTION/AVAILABILITY OF REPORT Approved for public release; 2b DECLASSIFICATION/DOWNGRADING SCHEDULE distribution is unlimited 4 PERFORMING ORGANIZATION REPORT NUMBER(S) 5 MONITORING ORGANIZATION REPORT NUMBER(S) 6a NAME OF PERFORMING ORGANIZATION 6b OFFICE SYMBOL 7a NAME OF MONITORING ORGANIZATION (If applicable) Naval Postgraduate School EC Naval Postgraduate School 6c ADDRESS (Ofy. Sfafe, and ZIPCode) 7b ADDRESS(Ofy, State, and ZIPCode) Monterey, CA 93943-5000 Monterey, CA 93943-5000 8a. NAME OF FUNDING/SPONSORING 8b OFFICE SYMBOL 9 PROCUREMENT INSTRUMENT IDENTIFICATION NUMBER ORGANIZATION (If applicable) 8c ADDRESS(City, State, and ZIPCode) 10 SOURCE OF FUNDING NUMBERS PROGRAM PROJECT TASK WORK UNiT ELEMENT NO NO NO ACCESSION NO 11 TITLE (Include Security Classification) AUTOMATED PERFORMANCE EVALUATION TECHNIQUE 12 PERSONAL AUTHOR(S) SKIMMONS, Brian E 3a TYPE OF REPORT 3b TIME COVERED 14 DATE OF REPORT (Year, Month, Day) 15 PAGE COUNT Master's Thesis FROM TO 1992 March 153 i6 supplementary notation The views expressed in this thesis are those of the author and do not reflect the official policy or position of the Depart' ment of Defense or the US Government. 1 7 COSATI codes 18 SUBJECT TERMS (Continue on reverse if necessary and identify by block number) FIELD GROUP SUB GROUP RFI Mitigation; CDAA Performance; RFDF Management 19 ABSTRACT {Continue on reverse if necessary and identify by block number) The U.S. Navy operates a number of radio receiving and signal collection sites throughout the world. These sites have been modified and upgraded a number of times to incorporate new equipment technology and advanced receiving and data processing systems. In addition the encroachment of other activities near the sites has increased, the levels of radio and electrical noise to harmful levels. The impact of some site modifications and increased noise levels on the ability of the sites to receive and process data from signals-of-interest (SOIs) is a major concern A means to evaluate the positive (or negative) impact of site improvements, site upgrades, and site encroachment on the performance of a site has not been available in past years. To fill this void, a performance 20 DISTRIBUTION/AVAILABILITY OF ABSTRACT 21 ABSTRACT SECURITY CLASSIFICATION Kl UNCLASSIFIED/UNLIMITED SAME AS RPT D DTIC USERS UNCLASSIFIED 22a NAME OF RESPONSIBLE INDIVIDUAL !2b TELEPHONE (Include AreaCode) 22c OFFICE SYMBOL WADSWORTH, Donald V.Z 408-646-2115 EC/Wri DDForm 1473, JUN 86 Previouseditionsareobsolete SECURITY CLASSIFICATION OF THIS PAGE S/N 0102-LF-014-6603 UNCLASSIFIED . UNCLASSIFIED .SECURITY CLASSIFICATION OF THIS PAGE 19. cont evaluation technique (PET) was developed by the staff and students of the Naval Postgraduate School. PET has gradually evolved into a useful analytic tool used during field surveys conducted by the Signal-to- Noise Enhancement Program (SNEP). SNEP teams visit selected sites to assess the impact of site modifications and man-made ratio noise on the reception of SOIs. The primary tool used to quantify the impact of factors affecting SOI reception is the PET curve. This thesis describes the steps involved in the PET, the construction and interpretation of PET curves, and new techniques employing a computer to generate PET curves. Examples of curves produced by the new automated process are presented using data from a recent SNEP survey at the Sabana Seca CDAA site. DO Form 1473, JUN 86(Reverse) security classification of this pag' UNCLASSIFIED ii Approved for public release; distribution is unlimited AUTOMATED PERFORMANCE EVALUATION TECHNIQUE by Brian E. Skimmons Lieutenant, United States Navy B.S., United States Naval Academy, 1986 Submitted in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE IN ELECTRICAL ENGINEERING from the NAVAL POSTGRADUATE SCHOOL March 1992 in ;. ABSTRACT The U.S. Navy operates a number of radio receiving and signal collection sites throughout the world. These sites have been modified and upgraded a number of times to incorporate new equipment technology and advanced receiving and data processing systems. In addition, the encroachment of other activities near the sites has increased the levels of radio and electrical noise to harmful levels. The impact of some site modifications and increased noise levels on the ability of the sites to receive and process data from signals-of-interest (SOIs) is a major concern. A means to evaluate the positive (or negative) impact of site improvements, site upgrades, and site encroachment on the performance of a site has not been available in past years. To fill this void, a performance evaluation technique (PET) was developed by the staff and students of the Naval Postgraduate School. PET has gradually evolved into a useful analytic tool used during field surveys conducted by the Signal-to-Noise Enhancement Program (SNEP). SNEP teams visit selected sites to assess the impact of site modifications and man-made radio noise on the reception ofSOIs. The primary tool used to quantify the impact of factors affecting SOI reception is the PET curve. This thesis describes the steps involved in the PET, the construction and interpretation ofPET curves, and new techniques employing a computer to generate PET curves. Examples ofcurves produced by the new automated process are presented using data from a recent SNEP survey at the Sabana Seca CDAA site. IV