Frank Sabath - Academia.edu (original) (raw)

Papers by Frank Sabath

Studies indicate that while High Power Electromagnetic (HPEM) sources are becoming more powerful,... more Studies indicate that while High Power Electromagnetic (HPEM) sources are becoming more powerful, electronic equipment is becoming more susceptible to potential HPM attacks. With HPEM research being conducted worldwide, there is an increasing threat to NATO military equipment and critical infrastructure. Damaging terrorist attacks by low-cost, low-tech devices could disrupt or destroy the electronic circuitry of key nodes in an IT network, with potential catastrophic effects.

This paper considers the effect of changes of the waveform parameters over distance. The objectiv... more This paper considers the effect of changes of the waveform parameters over distance. The objective is to show the effects in the intermediate field range and how near the equipment under test can be located to an antenna without significant parameter changes. It is shown that the well known frequency domain estimation models fail because the dimension of antenna systems and the wave propagation lead to a special kind of dispersion. The importance of this near field dispersion for practical applications is demonstrated by both theoretical considerations and measurements with a half impulse radiation antenna and an antenna array.

The last two decades have witnessed increased interest in High-Power Electromagnetics (HPEM), par... more The last two decades have witnessed increased interest in High-Power Electromagnetics (HPEM), particularly generation of high-power electromagnetic fields and their effects on electronics. Up to now most investigations on HPEM are characterizing the HPEM environment (e.g. source output, HPEM threat) employing frequency domain parameters of classical EMC. Nevertheless an efficient discussion of HPEM effects requires addition information on the time domain waveform as well as the probability of occurrence. This paper will analyze intentional electromagnetic interference (IEMI) as a system. A novel system based interference model, which will solve problems of current investigations will be introduced.

In this paper a norm based description of the coupling of transient electromagnetic fields to com... more In this paper a norm based description of the coupling of transient electromagnetic fields to complex systems is given and depicted via a numerical experiment. The susceptibility levels of different types of electronic equipment were measured in the UWB Test Facility of the WIS 1 . This facility is sketched and the results of the examinations are presented.

Wegen der großen Bedeutung von Mikroprozessoren und elektronischen Komponenten für die Informatio... more Wegen der großen Bedeutung von Mikroprozessoren und elektronischen Komponenten für die Informationsgesellschaft ist deren Empfindlichkeit gegen elektromagnetische Bedrohungen, wie z.B. elektromagnetische Impulse kürzester Anstiegszeit (kleiner als wenige ns) und hoher Amplituden (UWB Impulse) von großem Interesse und Gegenstand vieler Untersuchungen.

Ultra-Wideband, Short-Pulse Electromagnetics 10, 2013

ABSTRACT EMI risk assessment is a process for identifying, analyzing, and developing mitigation s... more ABSTRACT EMI risk assessment is a process for identifying, analyzing, and developing mitigation strategies for risks caused by electromagnetic interferences (EMI). The EMI risk assessment incorporates risk analysis and risk management, i.e., it combines systematic processes for risk identification, and evaluation, and how to deal with these risks. This chapter introduces a novel methodology for EMI risk assessment at system level, the Threat Scenario, Effect, and Criticality Analysis (TSECA). The TSECA is based on the general principle of the well-established FailureMode, Effects, and Criticality Analysis (FMECA), which has been modified to include.

Managing the Threat of Chemical, Biological, Radioactive and Nuclear Weapons, 2013

2011 XXXth URSI General Assembly and Scientific Symposium, 2011

The existing threat by criminal (intentional) use of electromagnetic tools is investigated. Repor... more The existing threat by criminal (intentional) use of electromagnetic tools is investigated. Reported Intentional Electromagnetic Interference (IEMI) attacks and similar incidents will be analyzed and discussed in regard to aspects like motivation and technical skills of the culprits, characteristics of the generated IEMI environment as well as effects on the target systems. Concluding common characteristics will lead to a discussion of the technological challenge of recognition and identification of an IEMI attack as well as backtracking of observed malfunction and destructions to an external IEMI environment.

Ultra-Wideband, Short Pulse Electromagnetics 9, 2010

High-power electromagnetic (HPEM) environments are capable of causing effects like malfunctions, ... more High-power electromagnetic (HPEM) environments are capable of causing effects like malfunctions, performance degradation, interferences, and destructions in electronic and electrical systems. Due to the large plurality of effects a scientific and systematic discussion requires a classification, which abstracts the essential information. This chapter presents a systematic classification of electromagnetic (EM) effects. The presented system enables an assessment and comparison at

2008 International Symposium on Electromagnetic Compatibility - EMC Europe, 2008

... The classification by mechanisms enables the analysis of the impact of threat parameter on a ... more ... The classification by mechanisms enables the analysis of the impact of threat parameter on a particular ... The categories failure and brake down, as described in table I, are part of the transition from ... start of software the situation can be categorized as H. In the practical case the ...