Effect of Real Terrain on the Lightning Magnetic Fields and Location Accuracy in Yunnan, China

Gu, Jiaying; Zhang, Qilin; Zhang, Jinbo; Hou, Wenhao; Yin, Qiyuan; Huang, Shiye

doi:10.1109/temc.2021.3063498

Cited by 6 publications

(2 citation statements)

References 37 publications

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“…Some current research results show that the location accuracy of the lightning location network based on the TOA method is affected by limited soil conductivity, propagation topography, and ionospheric height [16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31]. To improve the accuracy of the lightning location network, Li et al analyzed the location error of the lightning location system in the mountains around the Säntis Tower in the Swiss Alps [32].…”

Section: Introductionmentioning

confidence: 99%

Preliminary Application of Long-Range Lightning Location Network with Equivalent Propagation Velocity in China

Dai

Zhou

et al. 2022

Remote Sensing

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The equivalent propagation method adopts a variable propagation velocity in lightning location, minimizing the location error caused by various factors in the long-range lightning location network. To verify the feasibility of this method, we establish a long-range lightning location network in China. A new method is used to extract the ground wave peak points of the lightning sferics and is combined with the equivalent propagation velocity method for lightning location. By comparing with the lightning data detected by the lightning locating system called advanced direction and time-of-arrival detecting (ADTD) that has been widely used for tens of years in China, the feasibility of this method is initially verified. Additionally, it is found that the relative detection efficiency of our long-range lightning location network can reach 53%, the average location error is 9.17 km, and the detection range can reach more than 3000 km. The equivalent propagation method can improve the average location accuracy by ~1.16 km, compared with the assumed light speed of lightning-radiated sferic from the lightning stroke point to the observation station. The 50th percentile of the equal propagation velocity is 0.998c, which may be used in the long-range lightning location networks.

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Section: Introductionmentioning

confidence: 99%

Preliminary Application of Long-Range Lightning Location Network with Equivalent Propagation Velocity in China

Dai

Zhou

et al. 2022

Remote Sensing

Self Cite

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“…Applying corrections to the arrival times measured by LLS sensors can address a timing error introduced by terrain and soil conductivity variations and improve the accuracy of lightning location [20][21][22]. Honma et al [23] compensated the peak time delays by using conductivity values in the narrow range 0.001-0.003 S/m.…”

Section: Introductionmentioning

confidence: 99%

Location Accuracy Improvement of Long-range Lightning Detection Network In China by Compensating Ground Wave Propagation Delay

Zhang

Zhou

et al. 2022

Remote Sensing

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Very low frequency (VLF) electromagnetic waves distort along the long propagation path, and that causes the arrival time of the signals measured by the long-range lightning system to be delayed. In this paper, based on the propagation correction method by compensating the peak time delay of the ground wave, the location accuracy of the long-range lightning detection network in China is greatly improved. The improvement of the relative location accuracy and location offsets are evaluated by comparing with the Advanced Direction Time Lightning Detection System (ADTD) datasets. It shows that the mean relative accuracy is improved from 7.74 km to 4.32 km, and the median relative accuracy is improved from 7.28 km to 2.46 km. The mean westwards offset of the total lightning location data drops from 2.05 km to 0.93 km, and the mean southwards offset drops from 1.19 km to 0.63 km. In addition, it is found that the location accuracy will be greatly improved if the observation site affected by the terrain is removed. The mean relative location accuracy is further improved to 4.11 km and the median to 2.32 km.

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Lightning climatology across the Chinese continent from 2010 to 2020

Qie

Pang

et al. 2022

Atmospheric Research

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Effect of Real Terrain on the Lightning Magnetic Fields and Location Accuracy in Yunnan, China

Cited by 6 publications

References 37 publications

Preliminary Application of Long-Range Lightning Location Network with Equivalent Propagation Velocity in China

Preliminary Application of Long-Range Lightning Location Network with Equivalent Propagation Velocity in China

Location Accuracy Improvement of Long-range Lightning Detection Network In China by Compensating Ground Wave Propagation Delay

Lightning climatology across the Chinese continent from 2010 to 2020

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