Performance Evaluation of TEWA Systems for Improved Decision Support

In air defense situations, decision makers have to protect defended assets through assigning available firing units to threatening targets in real-time. To their help they have decision support systems known as threat evaluation and weapon allocation (TEWA) systems. The problem of performance evaluation of such systems is of great importance, due to their critical role. Despite this, research on this problem is close to non-existing. We are discussing the use of survivability and resource usage cost as comparative performance metrics, which can be used for comparing the effectiveness of different system configurations, by using simulations. These metrics have been implemented into a testbed, in which we have performed some comparative experiments. Our results show that changes of individual parts of the threat evaluation and weapon allocation system configuration can have a large effect on the effectiveness of the system as a whole, and illustrate how the metrics and the testbed can be used.

[1]  Vicenç Torra,et al.  Modeling Decisions: Information Fusion and Aggregation Operators (Cognitive Technologies) , 2006 .

[2]  Fredrik Johansson,et al.  A Comparison between Two Approaches to Threat Evaluation in an Air Defense Scenario , 2008, MDAI.

[3]  Orhan Karasakal,et al.  Air defense missile-target allocation models for a naval task group , 2008, Comput. Oper. Res..

[4]  Jh van Vuuren,et al.  Threat evaluation and weapon assignment decision support: A review of the state of the art , 2007 .

[5]  Robert L. Carling.  A Knowledge‐Base System for the Threat Evaluation and Weapon Assignment Process , 1993 .

[6]  Patrick A. Hosein,et al.  A class of dynamic nonlinear resource allocation problems , 1989 .

[7]  Jh van Vuuren,et al.  Real-time threat evaluation in a ground based air defence environment , 2008 .

[8]  Chou-Yuan Lee,et al.  A hybrid search algorithm with heuristics for resource allocation problem , 2005, Inf. Sci..

[9]  Charles C Jorgensen,et al.  Analysis of Manual Threat Evaluation and Weapons Assignment (TEWA) in the AN/TSQ-73 Air Defense System , 1979 .

[10]  Fredrik Johansson,et al.  A testbed based on survivability for comparing threat evaluation algorithms , 2009, Defense + Commercial Sensing.

[11]  Vicenç Torra,et al.  Modeling decisions - information fusion and aggregation operators , 2007 .

[12]  Fredrik Johansson,et al.  A Bayesian network approach to threat evaluation with application to an air defense scenario , 2008, 2008 11th International Conference on Information Fusion.