Acquisition, Technology, and Logistics (OUSD[AT&L]). The MDA uses a number of tools that have been developed over time, including the following:

•  The WILMA-Suite is an end-to-end modeling and analysis suite for BMDS concept exploration used to predict the performance of missile defense architectures. WILMA is a medium-fidelity end-to-end simulation evaluation of missile defense architecture effectiveness, with consideration for battle planning, communications, and integration alternatives. WILMA may also be run in a higher-fidelity mode, used in conjunction with other in-depth element, engineering, environment, phenomenology, and threat models to make detailed assessments of missile defense system performance against adversary ballistic missile attacks.

•   The SPET models space-sensor architecture performance, including multi-target tracking, scheduling, and handling association errors. SPET provides ground-, air-, and space-infrared (IR)/visible-sensor system performance against missile threat scenarios; the tool provides target signatures, coverage analysis, position and velocity tracking accuracy distributions, and interceptor effectiveness.

•   SYSSIM (System Simulation) also models space-sensor architecture performance and includes interceptor flyouts (surface- or air-based). SYSSIM models the interceptor’s kinematic flyout or reach and also the probability of kill (Pk) of the engagement. SYSSIM provides engagement time lines and Pk as a function of space-/air-/ground-sensor tracking accuracy.

Observations and Attributes

Although the MDA process described above is specific to MDA requirements, it necessarily considers intelligence, surveillance, and reconnaissance (ISR) architectural assets (particularly communications and PCPAD/TCPED [planning and direction, collection, processing and exploitation, analysis and production, and dissemination/tasking, collecting, processing, exploiting, and disseminating]) in order to deliver required capability. The MDA is exempt from the JCIDS process, which streamlines decision time lines somewhat and has fostered the development of a set of analysis tools that continue to evolve.


The Operationally Responsive Space (ORS) Office was established (1) to contribute to the development of low-cost, rapid-reaction payloads, buses, spacelift, and launch-control capabilities in order to fulfill Joint military operational requirements for on-demand support and reconstitution; and (2) to coordinate and

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