03217cam a2200505 i 4500001001900000003000500019005001700024008004100041010001700082020003500099020003800134027001900172035002100191037002200212040001900234043001200253050002200265245011200287264003700399300005000436336002600486337002600512337002800538338003600566338002700602500003000629500010400659504004900763505019700812520112101009530005802130610005502188610004402243650006702287650003102354700003302385700003102418700003302449700003502482710006002517710002202577710003102599856006202630999001902692rnd000000000111581RAND20200811100936.0070117s2007    cauab    b    000 0 eng    a  2007001853  a0833040448 (pbk. : alk. paper)  a9780833040442 (pbk. : alk. paper)  aRAND/MG-525-AF  a(Sirsi) lc511515  c$23.00fpaperback  aCstmoRcCstmoR  an-us---00aUG1523b.S87 200700aSustaining Air Force space systems :ba model for the Global Positioning System /cDon Snyder ... [et al.]. 1aSanta Monica, CA :bRAND,c2007.  axvii, 46 pages :billustrations, map ;c23 cm  atextbtxt2rdacontent  acomputerbc2rdamedia  aunmediatedbn2rdamedia  aonline resourcebcr2rdacarrier  avolumebnc2rdacarrier  a"RAND Project Air Force."  a"The work was conducted within the Resource Management Program of RAND Project Air Force"--Preface.  aIncludes bibliographical references (p. 47).0 aIntroduction -- Considerations for a GPS sustainment model -- A predictive model for the sustainment of GPS ground antennas -- Conclusions and next steps -- Appendix: The GPS as a public good.  aAir Force Space Command (AFSPC) needs quantitative tools to assist it in making decisions on how changes in the dollars invested in maintenance and sustainment of the ground segment of space systems affect the operational performance of those systems. This monograph outlines criteria for analyzing how sustainment investments affect the operational performance of space systems, focusing on the Global Positioning System. The authors offer a framework for such analyses and recommend steps to implement that framework. The authors describe the Global Positioning System at a level of detail needed for the analysis; discuss how to approach modeling the relationships between sustainment activities and overall system performance, and describe a pilot model for such analysis; and the authors examine the results of this model and how they might be used in policy analysis, and discuss the implications for developing such models in GPS and other programs. The authors selected a metric of performance that reflects the overall system performance, and not one that focuses on the performance of a specific subsystem.  aAlso available on the internet via WWW in PDF format.10aUnited States.bAir Force Space CommandxPlanning.10aUnited States.bAir ForcexProcurement. 0aAstronautics, MilitaryzUnited StatesxEquipment and supplies. 0aGlobal Positioning System.1 aSnyder, Don,d1962-eauthor.1 aMills, Patrick H.eauthor.1 aComanor, Katherine.eauthor.1 aRoll, Charles Robert.eauthor.2 aProject Air Force (U.S.).bResource Management Program.2 aRand Corporation.1 aUnited States.bAir Force.41yOnline Accessuhttp://www.rand.org/pubs/monographs/MG525/  c599986d599986