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9. Verification and Validation




On validating simulation models of missile systems

On validating simulation models of missile systems


This is, again, an empirical question, and tests can be carried out to help identify when this type of extrapolation is warranted. Simulation can save money, is safer, does not have the environmental problems of operational test, is not constrained in defense applications by the availability of enemy systems, and is always feasible in some form. In particular, new systems by definition have new features. The need to compare the simulation with operational experience raises a serious problem for simulations used in operational test design, but it can be overcome by using operationally relevant developmental test results. For other purposes, a simulation needs to be strongly predictive. Simulation is then used to predict performance of the system in untested scenarios. As a feedback tool, assuming that information is to be collected from other than the most stressful scenarios, the ranking of the scenarios with respect to performance from the simulation model can be compared with that from the operational test, thereby providing feedback into the model-building process, to help validate the model and to discover areas in which it is deficient. First, extrapolation is made to different types of weather, terrain, and tactics. The results of such tests, in turn, should be used to calibrate and validate all relevant models and simulations. Experiments should be carried out in situations in which one can test the multiple system engagement to see whether this type of extrapolation is warranted. Validation is "the process of determining a the manner and degree to which a model is an accurate representation of the real-world from the perspective of the intended uses of the model, and b the confidence that should be placed on this assessment" U.

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On validating simulation models of missile systems


This is, again, an empirical question, and tests can be carried out to help identify when this type of extrapolation is warranted. Simulation can save money, is safer, does not have the environmental problems of operational test, is not constrained in defense applications by the availability of enemy systems, and is always feasible in some form. In particular, new systems by definition have new features. The need to compare the simulation with operational experience raises a serious problem for simulations used in operational test design, but it can be overcome by using operationally relevant developmental test results. For other purposes, a simulation needs to be strongly predictive. Simulation is then used to predict performance of the system in untested scenarios. As a feedback tool, assuming that information is to be collected from other than the most stressful scenarios, the ranking of the scenarios with respect to performance from the simulation model can be compared with that from the operational test, thereby providing feedback into the model-building process, to help validate the model and to discover areas in which it is deficient. First, extrapolation is made to different types of weather, terrain, and tactics. The results of such tests, in turn, should be used to calibrate and validate all relevant models and simulations. Experiments should be carried out in situations in which one can test the multiple system engagement to see whether this type of extrapolation is warranted. Validation is "the process of determining a the manner and degree to which a model is an accurate representation of the real-world from the perspective of the intended uses of the model, and b the confidence that should be placed on this assessment" U.

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3 thoughts on “On validating simulation models of missile systems

  1. [RANDKEYWORD
    Doramar

    Second, vertical extrapolation is either from the performance of a single system against a single system to the performance of multiple systems in a Page Share Cite Suggested Citation:

  2. [RANDKEYWORD
    Vudora

    Such replications can be repeated, keeping track of the percentage of tests that the system passed.

  3. [RANDKEYWORD
    Yozuru

    An area with great promise is the use of a small number of field events, modeling and simulation, and statistical modeling, to jointly evaluate a defense system under development.

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