Enhancing Combat Survivability of Existing Unmanned Aircraft Systems
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CORE Metadata, citation and similar papers at core.ac.uk Provided by Calhoun, Institutional Archive of the Naval Postgraduate School Calhoun: The NPS Institutional Archive Theses and Dissertations Thesis Collection 2008-12 Enhancing combat survivability of existing unmanned aircraft systems Tham, Kine Seng Monterey, California http://hdl.handle.net/10945/3734 NAVAL POSTGRADUATE SCHOOL MONTEREY, CALIFORNIA THESIS ENHANCING COMBAT SURVIVABILITY OF EXISTING UNMANNED AIRCRAFT SYSTEMS by Kine Seng Tham December 2008 Thesis Co-Advisors: Gary Langford Ravi Vaidyanathan Approved for public release; distribution is unlimited. THIS PAGE INTENTIONALLY LEFT BLANK REPORT DOCUMENTATION PAGE Form Approved OMB No. 0704-0188 Public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instruction, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden, to Washington headquarters Services, Directorate for Information Operations and Reports, 1215 Jefferson Davis Highway, Suite 1204, Arlington, VA 22202- 4302, and to the Office of Management and Budget, Paperwork Reduction Project (0704-0188) Washington DC 20503. 1. AGENCY USE ONLY (Leave blank) 2. REPORT DATE 3. REPORT TYPE AND DATES COVERED December 2008 Master’s Thesis 4. TITLE AND SUBTITLE 5. FUNDING NUMBERS Enhancing Combat Survivability of Existing Unmanned Aircraft Systems 6. AUTHOR(S) Kine Seng Tham 7. PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) 8. PERFORMING Naval Postgraduate School ORGANIZATION REPORT Monterey, CA 93943-5000 NUMBER 9. SPONSORING / MONITORING AGENCY NAME(S) AND ADDRESS(ES) 10. SPONSORING / MONITORING AGENCY REPORT NUMBER - N/A - 11. SUPPLEMENTARY NOTES The views expressed in this thesis are those of the author and do not reflect the official policy or position of the Department of Defense or the U.S. Government. 12a. DISTRIBUTION / AVAILABILITY STATEMENT 12b. DISTRIBUTION CODE Approved for public release; distribution is unlimited 13. ABSTRACT (maximum 200 words) The importance of Unmanned Aircraft Systems (UAS) to warfighters has been growing. Each loss (regardless of whether the entire UAS or parts of it) has become more expensive and unaffordable in both an operational and monetary sense. An unmanned aircraft (UA) loss may mean that critical missions cannot be performed and millions of dollars of investments on the UA lost. As most existing UAS were designed to be inexpensive and expendable, there is a need to enhance their combat survivability. Combat survivability is the capability of UAS to avoid or withstand a man-made hostile environment. This thesis explored how to enhance the combat survivability of existing UAS. Potential survivability enhancement options are identified. These options include changes in tactics, improving the situation awareness of the operator, equipping the UA with the capability to counter an incoming threat, improving the payload performance, improving resistance of the data link to jamming. The technology behind these options as well as the favorable and unfavorable factors of the options are studied and discussed. This thesis also proposed a process for selecting the “best” solution from survivability enhancement alternatives. This thesis used systems engineering methodology to enhance the survivability of existing UAS. 14. SUBJECT TERMS 15. NUMBER OF Systems Engineering, Unmanned Aircraft System, UAS, Unmanned Aerial Vehicle, UAV, Combat PAGES Survivability, Survivability, Survivability Enhancement 149 16. PRICE CODE 17. SECURITY 18. SECURITY 19. SECURITY 20. LIMITATION CLASSIFICATION OF CLASSIFICATION OF THIS CLASSIFICATION OF OF ABSTRACT REPORT PAGE ABSTRACT Unclassified Unclassified Unclassified UU NSN 7540-01-280-5500 Standard Form 298 (Rev. 2-89) Prescribed by ANSI Std. 239-18 i THIS PAGE INTENTIONALLY LEFT BLANK ii Approved for public release; distribution is unlimited ENHANCING COMBAT SURVIVABILITY OF EXISTING UNMANNED AIRCRAFT SYSTEMS Kine Seng Tham Civilian, Defence Science & Technology Agency, Singapore B.Eng (Hons), National University of Singapore, 2002 Submitted in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE IN SYSTEMS ENGINEERING from the NAVAL POSTGRADUATE SCHOOL December 2008 Author: Kine Seng Tham Approved by: Gary O. Langford Thesis Co-Advisor Ravi Vaidyanathan Thesis Co-Advisor David H. Olwell Chair, Systems Engineering Department iii THIS PAGE INTENTIONALLY LEFT BLANK iv ABSTRACT The importance of Unmanned Aircraft Systems (UAS) to warfighters has been growing. Each loss (regardless of whether the entire UAS or parts of it) has become more expensive and unaffordable in both an operational and monetary sense. An unmanned aircraft (UA) loss may mean that critical missions cannot be performed and millions of dollars of investments on the UA lost. As most existing UAS were designed to be inexpensive and expendable, there is a need to enhance their combat survivability. Combat survivability is the capability of UAS to avoid or withstand a man-made hostile environment. This thesis explored how to enhance the combat survivability of existing UAS. Potential survivability enhancement options are identified. These options include changes in tactics, improving the situation awareness of the operator, equipping the UA with the capability to counter an incoming threat, improving the payload performance, improving resistance of the data link to jamming. The technology behind these options as well as the favorable and unfavorable factors of the options are studied and discussed. This thesis also proposed a process for selecting the “best” solution from survivability enhancement alternatives. This thesis used systems engineering methodology to enhance the survivability of existing UAS. v THIS PAGE INTENTIONALLY LEFT BLANK vi TABLE OF CONTENTS I. INTRODUCTION........................................................................................................1 A. BACKGROUND ..............................................................................................1 B. PURPOSE.........................................................................................................4 C. RESEARCH QUESTIONS.............................................................................4 D. SCOPE ..............................................................................................................4 E. METHODOLOGY ..........................................................................................5 1. Define Problem.....................................................................................5 2. Functional Analysis of Adversary Wanting to Affect UAS Mission Effectiveness...........................................................................5 3. Develop the Kill Chain.........................................................................5 4. Perform a Functional Analysis on Enhancing Combat Survivability of UAS............................................................................6 5. Define Concepts that Can Be Used to Achieve Combat Survivability .........................................................................................6 6. Perform Physical Decomposition of UAS ..........................................6 7. Perform Functional Analysis of the Top Priority Mission...............6 8. Identify Potential Threats to UAS......................................................7 9. Identify UAS Weakness (With Reference To Combat Survivability)........................................................................................7 10. Determine Survivability Enhancement Options ...............................7 11. Develop Selection Process....................................................................7 F. THESIS FLOW................................................................................................8 G. CHAPTER SUMMARY..................................................................................8 II. COMBAT SURVIVABILITY ....................................................................................9 A. SURVIVABILITY, SYSTEM SAFETY, AND COMBAT SURVIVABILITY ...........................................................................................9 1. Susceptibility ......................................................................................10 2. Vulnerability.......................................................................................11 B. ADVERSARY’S OBJECTIVE.....................................................................11 C. ENHANCING COMBAT SURVIVABILITY ............................................13 1. Reducing Susceptibility .....................................................................17 a. Gather Intelligence about Threat...........................................17 b. Threat Warning.......................................................................17 c. Increase Stand-off Range .......................................................18 d. Improve System Performance.................................................18 e. Threat Suppression .................................................................18 f. Signature Reduction ...............................................................18 g. Jamming and Deceiving .........................................................19 h. Tactics and