Electromagnetic Modeling of High Altitude Electromagnetic Pulse Coupling into Large-Scale Underground Multilayer Structures
نویسندگان
چکیده
منابع مشابه
Simulation of High-Altitude Electromagnetic Pulse (HEMP) above Sea Surface
High-altitude electromagnetic pulse (HEMP) radiated from both primary and secondary currents, which are induced by a nuclear explosion, is computed by using the Jefimenko’s equation. The effects of geomagnetic field is considered in computing the primary current, and the rough sea surface is considered in computing the reflected electric field in the frequency domain. The waveforms of HEMP near...
متن کاملCharacteristics of Electromagnetic Pulse Coupling into Annular Apertures
Electromagnetic pulse (EMP) coupling into the annular apertures can disturb or damage much electronic equipment. To enhance electronic system’s capability of anti-electromagnetic interference, the finite difference time domain method (FDTD) was employed to study the characteristics of electromagnetic pulse coupling into the cavity enclosures with annular apertures. The coupling characteristics ...
متن کاملA Modified Description of Early Time High-altitude Electromagnetic Pulse Waveform (E1)
The mathematical description of High-altitude Electromagnetic Pulse (HEMP) waveform (E1) in the standard of IEC 61000-2-9 is the difference of double exponentials (DEXP). However, in this description there is a discontinuity of the first derivative at the initial time of waveform. Another analytic waveform description, the quotient of double exponentials (QEXP) has the advantage of all time der...
متن کاملRisetime Evolution in HEMP (High-Altitude Electromagnetic Pulse) E1Waveforms - Technology and Standards
There are many different definitions of the risetime of a transient waveform. In the context of HEMP standards, the 10-90% risetime of an idealized double exponential waveform has been defined and used for many decades. However, such a risetime definition is not strictly applicable to the transient voltage out of a pulse generator, since no practical switch can close in zero time. In this paper...
متن کاملElectromagnetic Pulse Coupling inside a Rectangular Enclosure with an Aperture
The transmission line matrix time domain (TLM-TD) method is used to simulate the electromagnetic pulse (EMP) coupled inside a shielding box with an aperture. Simulations for different electromagnetic pulses regarding to different rise time and fall time have been performed. The results for shielding effectiveness of these different excitations have been presented. A simple method that uses an e...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Journal of Korean Institute of Electromagnetic Engineering and Science
سال: 2012
ISSN: 1226-3133
DOI: 10.5515/kjkiees.2012.23.3.392