一 SSPARC Single attribute utilities SSPARC Multi-Attribute Utility U(X+1-(KkU(x)+1) # isE Total Lifecycle Cost(SM 2002)9 Space Systems, Policy, and Architecture Research Consortium ©2002 Massachusetts Institute of Technology 17 Single Attribute Utilities 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 150 350 550 750 950 Data Collection Altitude (km) Utility Space Systems, Policy, and Architecture Research Consortium ©2002 Massachusetts Institute of Technology 18 Multi-Attribute Utility Single Attribute Utility Curve for Data Point Altitude 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 150 350 550 750 950 Altitude (km) 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 Lifespan Latitude Latency Equator Time Altitude Weight Factors of each Attribute (k values) ’( ) = =+ + N i KU X Kk XU ii 1 1)( 1)( Total Lifecycle Cost ($M 2002) Utility