Fourier Transform Application in the Computation of Lightning Electromagnetic Field
نویسنده
چکیده
Atmospheric discharge is one of the most interesting and powerful natural phenomenon hiding from men its undiscovered features and secrets for centuries. Lightning discharges have been studied in many theoretical and experimental ways. However, application of Fourier transform has been introduced in this research only in recent few decades. It proved very useful in solving many lightning research problems.
منابع مشابه
Calculation of Electromagnetic Field inside a Wire Structure in a Pulse Field of Lightning Discharge
Calculation of electric field and potential inside a wire structured object in external pulse electromagnetic field of lightning discharge is presented in this paper. Conductive structure is solved as a receiving antenna using program SPAN [1,2] for an arbitrary antenna configuration, consisting of lineic cylindrical segments, in external electromagnetic field. One simple approximation [3] for ...
متن کاملElectromagnetic Field Due to Lightning Strikes to Mountainous Ground
The produced electric and magnetic fields due to lightning strikes to mountainous ground are determined in this paper. For the sake of simplicity a cone-shaped ground with finite conductivity is assumed to represent a natural nonflat ground. By this assumption, we deal with an axillary symmetrical structure so we use the cylindrical 2D-FDTD to save the simulation memory and time, dramatically. ...
متن کاملAn Efficient Method to Calculate the Convolution Based Reaction Integral Using the Analytical Fourier Transform
A major step in the numerical solution of electromagnetic scattering problems involves the computation of the convolution based reaction integrals. In this paper a procedure based on the analytical Fourier transform is introduced which allows us to calculate the convolution-based reaction integrals in the spectral domain without evaluating any convolution products directly. A numerical evaluati...
متن کاملComparison of Electromagnetic Models of Lightning Return Strokes Using Current and Voltage Sources
Electromagnetic models based on antenna theory have been recently applied in lightning studies. Their practical use is facilitated by existing thin-wire antenna numerical codes that utilize localized voltage sources. Such voltage sources have to be tuned to provide the lightning channel-base current for which experimental data are available. This involves some preparatory steps, such as the det...
متن کاملLightning stroke distance estimation from single station observation and validation with WWLLN data
A simple technique to estimate the distance of the lightning strikes d with a single VLF electromagnetic wave receiver at a single station is described. The technique is based on the recording of oscillatory waveforms of the electric fields of sferics. Even though the process of estimating d using the waveform is a rather classical one, a novel and simple procedure for finding d is proposed in ...
متن کامل