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In this chapter we further explore the effects tracker design and performance have on the command architecture. Defensive algorithms must both identify a threat and, if necessary, counter the threat. The simplest situation is one in which the defensive resources can be deployed without delay; e.g., when there is a directed energy weapon (a DEW). But a ballistic defense needs to know where the target will be, not where it is. In this chapter we explore the complications that arise when the target must be classified with a minimal expenditure of illumination resources and must be neutralized with a similar minimal expenditure of countermeasure resources. The EKF is contrasted with the GWE. As expected, the ability to accurately predict target motion is greatly aided by the GWE’s estimate of the target motion regime. The EKF tracker, lacking even the notion of target motion mode, yields neutralization regions that are inadequate to accomplish the specified tasks. |
