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The complexity and performance characteristics of weapon systems under development by the Ballistic Missile Defense Organization (BMDO) require an integrated test approach that spans all levels of testing. Flight testing of ballistic missile interceptors is limited by the complexity and costs of the exercises and are constrained by inherent restrictions imposed by test ranges. While flight testing remains an essential part of ballistic missile interceptor test programs, other test methods must be utilized to fully characterize system operational characteristics. The BMDO uses a test concept which employs specialized facilities to address critical aspects of the ballistic missile defense (BMD) engagement process. The facilities are used during all phases of the acquisition life cycle, accommodating test articles ranging from early prototype subsystems to integrated production-like systems. Individually, these facilities characterize the performance of the specific unit under test. Collectively, these facilities span the BMD engagement process from target detection through kill assessment. Test results are consolidated to characterize the performance of the integrated system. In this manner, the performance of the system is characterized throughout its potential performance envelope. This paper discusses the role and contribution of infrared space-based surveillance and kinetic kill interceptor hardware-in-the-loop (HWIL) facilities in BMD test programs. An overview of BMDO HWIL test policy and sponsored facilities is presented. This paper examines the relationship between BMDO sponsored facilities in terms of inputs required to support HWIL tests and HWIL outputs available to support other tests. Issues pertinent to planning and executing a successful HWIL program are also discussed.
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