Please use this identifier to cite or link to this item:
Title: Properties of “site error” of lightning direction-finder (DF) and its modeling
Authors: Chen, M 
Lu, T
Du, Y 
Keywords: Lightning location network
Direction finder
Site errors
Electromagnetic dipole
Issue Date: 2013
Publisher: Elsevier
Source: Atmospheric research, 2013, v. 129-130, p. 97-109 How to cite?
Journal: Atmospheric research 
Abstract: Lightning Location Network (LLN) based on time-of-arrival/direction-finder combined technique (TOA/DF) has been used world-widely for lightning warning and protection purpose. As long as the DF technique is involved in a LLN, it suffers from the “site error”. Firstly, based on experimental data, we have examined the properties of the “site error” as a function of the source azimuth. It is found that for a given DF, the “site error” as a function of source azimuth appears as a complicated sinusoidal waveform with a dominant cycle of either 360° or 180°. A different DF has a different “site error” pattern but this pattern is timely invariant unless the DF's site environment is changed. Secondly, with the magnetic field waveforms recorded by a broadband DF, the properties of the “site error” in frequency domain have been studied. It is found that for a given lightning stroke, the source azimuth determined by the ratio of amplitude of the spectra of magnetic fields from the two orthogonal magnetic loops of a DF varies significantly against the frequency. The source azimuth (or the “site error”) as a function of the frequency usually appears as a complicated curve with some mono-polar and bi-polar impulses superposed on a relative flat line. Thirdly, theoretical explanation and modeling of the “site error” have been attempted based on an electromagnetic dipole model. Simulations with the model show that the mono-polar impulsive fluctuations of the “site error” in frequency domain are due to the reflection of lightning incident signals on “electric-dipole-wise” structures nearby the DF, while the bi-polar ones are due to that of “magnetic-dipole-wise” structures. The model can well interpret the properties of the “site error” as a function of the source azimuth too. Furthermore, possible approaches for making “site error” corrections have been discussed.
ISSN: 0169-8095
EISSN: 1873-2895
DOI: 10.1016/j.atmosres.2012.09.003
Appears in Collections:Journal/Magazine Article

View full-text via PolyU eLinks SFX Query
Show full item record


Last Week
Last month
Citations as of Apr 14, 2018


Last Week
Last month
Citations as of Apr 24, 2018

Page view(s)

Last Week
Last month
Citations as of Apr 23, 2018

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.