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8 Modern Weapons: Possibilities and Limitations
due to presence of open plug and socket connectors in modern examples of aircraft
and spacecraft. There are known cases of theoretical studies and certain theoretical description of penetration of microwave radiation with a wavelength of 3.2 cm
through certain plug and socket connectors used in aircraft and spacecraft [8].
Therefore, based on the analysis of typical examples of aircraft and spacecraft
we can conclude that the main ways of penetration of microwave radiation for these
objects are
(1) Antenna feeder devices of onboard electronics;
(2) Open plug and socket connectors of onboard electronics and quick-disconnect
cable connections.
(3) Radio-transparent elements of case designs of the objects themselves as well as
the equipment.
The methodological analysis for assessment of the level of dependability of
computing systems and control systems of aircrafts and spacecrafts under the conditions of effect of microwave radiation (microwave weapons) can be based on the
developed integrated probabilistic model, which consists of four interconnected
probabilistic models.
The first one is a probabilistic model of attenuation of microwave weapon radiation in the atmosphere, which takes into account the random nature of weather
conditions and atmosphere parameters. This model makes it possible to obtain the
law of distribution of the attenuation coefficient and use it in probabilistic models
to determine load values. The load is the parameter that characterizes the destructive effect of microwave weapons on the critical elements of electronics and other
functional nodes of weapons and military equipment.
The second model is a probabilistic model of exposure to microwave radiation
through the AFD of the radioelectronic means of the target, which takes into account
the frequency selectivity of the AFD elements in case of out-of-band influence of
a microwave weapon. When developing the model, the authors of [4] adopted the
antenna interaction mechanism and used the theory of radio reception. In this case,
the microwave source is considered a transmitter, and the target is a recepient of
microwave radiation. The authors of [4] received the expression to calculate the value
of the load affecting the critical element. Method of statistical modeling is used to
calculate the load distribution law, which is used to calculate the effectiveness of the
destructive effect of microwave radiation.
The third model is the probabilistic model of the effect of microwave radiation
through open plug-and-socket connectors of weapons and military equipment, which
makes it possible to calculate the load distribution laws in case of effect through the
connector. In this case, the obtained empirical dependencies are used to calculate
the connector attenuation coefficient and the experimentally obtained correction for
the calculation of the directivity patterns of the connector pins [12]. The statistical
modeling method is used to determine the load distribution load.
As a result of the correlation analysis, the researchers identified significant
parameters that are used in the above models as random variables.
8 Modern Weapons: Possibilities and Limitations
due to presence of open plug and socket connectors in modern examples of aircraft
and spacecraft. There are known cases of theoretical studies and certain theoretical description of penetration of microwave radiation with a wavelength of 3.2 cm
through certain plug and socket connectors used in aircraft and spacecraft [8].
Therefore, based on the analysis of typical examples of aircraft and spacecraft
we can conclude that the main ways of penetration of microwave radiation for these
objects are
(1) Antenna feeder devices of onboard electronics;
(2) Open plug and socket connectors of onboard electronics and quick-disconnect
cable connections.
(3) Radio-transparent elements of case designs of the objects themselves as well as
the equipment.
The methodological analysis for assessment of the level of dependability of
computing systems and control systems of aircrafts and spacecrafts under the conditions of effect of microwave radiation (microwave weapons) can be based on the
developed integrated probabilistic model, which consists of four interconnected
probabilistic models.
The first one is a probabilistic model of attenuation of microwave weapon radiation in the atmosphere, which takes into account the random nature of weather
conditions and atmosphere parameters. This model makes it possible to obtain the
law of distribution of the attenuation coefficient and use it in probabilistic models
to determine load values. The load is the parameter that characterizes the destructive effect of microwave weapons on the critical elements of electronics and other
functional nodes of weapons and military equipment.
The second model is a probabilistic model of exposure to microwave radiation
through the AFD of the radioelectronic means of the target, which takes into account
the frequency selectivity of the AFD elements in case of out-of-band influence of
a microwave weapon. When developing the model, the authors of [4] adopted the
antenna interaction mechanism and used the theory of radio reception. In this case,
the microwave source is considered a transmitter, and the target is a recepient of
microwave radiation. The authors of [4] received the expression to calculate the value
of the load affecting the critical element. Method of statistical modeling is used to
calculate the load distribution law, which is used to calculate the effectiveness of the
destructive effect of microwave radiation.
The third model is the probabilistic model of the effect of microwave radiation
through open plug-and-socket connectors of weapons and military equipment, which
makes it possible to calculate the load distribution laws in case of effect through the
connector. In this case, the obtained empirical dependencies are used to calculate
the connector attenuation coefficient and the experimentally obtained correction for
the calculation of the directivity patterns of the connector pins [12]. The statistical
modeling method is used to determine the load distribution load.
As a result of the correlation analysis, the researchers identified significant
parameters that are used in the above models as random variables.