Propagation of double-exponential pulse through Debye medium

2001 ◽  
Vol 43 (2) ◽  
pp. 223-229 ◽  
Author(s):  
Yaxun Liu ◽  
Wenbing Wang
Keyword(s):  
Double Exponential ◽  
Exponential Pulse

scholarly journals The Parameter Estimation of Double Exponential Pulse Based on a Least Infinity Norm Fitting Method

2021 ◽  
Vol 2083 (4) ◽  
pp. 042002
Author(s):  
Yuewu Shi ◽  
Wei Wang ◽  
Zhizhen Zhu ◽  
Xin Nie
Keyword(s):  
Estimation Error ◽  
Estimation Method ◽  
Maximum Amplitude ◽  
Least Square Method ◽  
Least Square ◽  
Physical Parameters ◽  
Infinity Norm ◽  
Fitting Method ◽  
Double Exponential ◽  
Exponential Pulse

Abstract This paper presents an estimation method of double exponential pulse (DEP) between the physical parameters rise time (t r), full width at half maximum amplitude (t FWHM) and the mathematical parameters α, β. A newly fitting method based on the least infinity norm criterion is proposed to deal with the estimation problem of DEP. The calculation process and equation of parameters of this method is proposed based on an m-th-order polynomial fitting model. This estimation method is compared with the least square method by the same data and fitting function. The results show that the maximum estimation error of parameters of double exponential pulse obtained by the least infinity norm method is 1.5 %.

Experiments and Analyses of Horizontal Earth Electrodes’ TGR on Various Grounds

2014 ◽  
Vol 599-601 ◽  
pp. 935-939
Author(s):  
Xin Bo Qu ◽  
Bi Hua Zhou ◽  
Ya Peng Fu ◽  
Yan Xin Li ◽  
Tao Wang
Keyword(s):  
Time Domain ◽  
Pulse Current ◽  
Grounding Resistance ◽  
Ground Measurement ◽  
Double Exponential ◽  
New Type ◽  
Exponential Pulse ◽  
Discharging Capacity ◽  
Horizontal Grid ◽  
Earth Electrode

In this paper, a new type of portable horizontal grid earth electrode has been designed for mobile equipments. With the impulse ground measurement system, the responses to double exponential pulse current of five earth electrodes in two arrangements have been tested on soil, grassplot and cement floor respectively. After filtering and calculating, the curve of transient grounding resistance (TGR) in time domain can be gotten. And in the end, some conclusions have been drawn. The analysis of discharging capacity of horizontal grid earth electrodes in time domain has great significance in the design of mobile equipments’ earth devices.

The Analysis of Transient Grounding Resistance of Portable Horizontal Grid Earth Electrodes

2013 ◽  
Vol 347-350 ◽  
pp. 1753-1757
Author(s):  
Xin Bo Qu ◽  
Bi Hua Zhou ◽  
Ning Sheng Cao ◽  
Ya Peng Fu ◽  
Xiao Gang Huang
Keyword(s):  
Pulse Current ◽  
Grounding Resistance ◽  
Ground Measurement ◽  
Double Exponential ◽  
New Type ◽  
Impulse Waves ◽  
Exponential Pulse ◽  
Discharging Capacity ◽  
Horizontal Grid ◽  
Earth Electrode

Based on current situation of mobile equipments earth devices, a new type of portable horizontal grid earth electrode has been designed. With the impulse ground measurement system, different number of earth electrodes responses to double exponential pulse current have been tested on cement grounds. Impulse waves of voltage and current have been gotten by experiments, and the curve of Transient Grounding Resistance (TGR) can be calculated. The analysis of discharging capacity of horizontal grid earth electrodes in time domain has great significance in the design of mobile equipments earth devices.

Simulation of Transient EMP Effects Coupling through Apertures Using Sub-Gridding FDTD Algorithm

2012 ◽  
Vol 195-196 ◽  
pp. 814-820 ◽  
Author(s):  
Jin Shi Xiao ◽  
Xiong Wei Ren
Keyword(s):  
Field Strength ◽  
Current Density ◽  
Electromagnetic Pulse ◽  
Pulse Source ◽  
Coupling Effects ◽  
Transient Electromagnetic ◽  
Double Exponential ◽  
Gauss Pulse ◽  
Em Field ◽  
Exponential Pulse

Transient electromagnetic pulse (EMP) can easily couple into the inner of targets via apertures. To calculate the EMP coupling effects on a cylinder object with openings, the coupling course is simulated using sub-gridding FDTD algorithm in this paper. Gauss pulse and double exponential pulse are selected as the incident pulse source. The coupling EM field strength E inside the object and the current density J on the surface are calculated. Several rules about EMP coupling effects are gotten both in time and frequency domain. The results can help us to understand the damage effects of transient EMP.

Design of miniature double-exponential pulse generator

2014 ◽  
Vol 26 (6) ◽  
pp. 63202
Author(s):  
周星 Zhou Xing ◽  
赵敏 Zhao Min ◽  
程二威 Cheng Erwei ◽  
杨清熙 Yang Qingxi
Keyword(s):  
Pulse Generator ◽  
Double Exponential ◽  
Exponential Pulse

Characteristics of propagated double-exponential pulse through waveguide

1997 ◽  
Vol 33 (16) ◽  
pp. 1390 ◽  
Author(s):  
Ya-Xun Liu ◽  
Wen-Bing Wang
Keyword(s):  
Double Exponential ◽  
Exponential Pulse
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