Electromagnetic Pulse Coupling into Naval Warship and Protective Measures

Characteristics 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 ...

Electromagnetic 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...

Coupling of stochastic electromagnetic beams into optical fibers.

We derive a general analytic expression for the coupling efficiency when a partially coherent, partially polarized beam is coupled into a multimode optical fiber. We adopt the Gaussian-Schell model for incident electromagnetic beams and use our general result to discuss the effects of the partial coherence and partial polarization on the coupling efficiency of an optical beam focused onto a ste...

Electromagnetic Pulse and Civil Preparedness

Electric warship new

INTRODUCTION In recent years a variety of papers, seminars and conferences have sought to provide detail and promote discussion on the diverse range of issues that make up the electric warship concept. The same period has also seen a huge amount of progress in enabling technologies that have made integrated electric propulsion the system of choice for many new naval ships. This paper looks to r...