| Citation: | Xiaodong QU, Yang SUN, Chong CHEN, Junlong SHI, Xin XU, Jutao LI, Wanhua ZHU, Guangyou FANG. Direction Finding for Electromagnetic Radiation Source Using Ultra-short Baseline Array[J]. Journal of Electronics & Information Technology, 2019, 41(4): 830-836. doi: 10.11999/JEIT180516
|
To improve the location resolution of electromagnetic radiation source, a ultra-short baseline network CASMA (Mini-Array by Chinese Academy of Sciences) is proposed for detection, utilizing optical fiber for timing. CASMA contains 5 electromagnetic detection stations and a control unit. The distance between each pair of stations is about 1 km, meaning that the length of baseline to the wavelength is about 0.1. The timing accuracy is about 10 ns. CASMA is applied to record the vertical electric field emitting by radio transmitters. CASMA utilizes interferometric imaging algorithm to calculate the transmitters’ azimuth. By experiment, the calculated azimuths approach the expected azimuths with deviations are less than 0.2°, showing many advantages over traditional systems or methods. Consequently, CASMA has accuracy direction finding resolution for electromagnetic radiation source. According to the results, the location accuracy may be expected to be 0.5%·R in a 2500 km scope where R is the distance between the electromagnetic radiation source and CASMA using two sets of CASMA for intersection positioning.
|
CUMMER S and FULLEKRUG M. Unusually intense continuing current in lightning produces delayed mesospheric breakdown[J]. Geophysics Research Letter, 2001, 28(3): 495–498 doi: 10.1029/2000GL012214
|
|
CUMMER S, LI Jingbo, HAN Feng, et al. Quantification of the troposphere-to-ionosphere charge transfer in a gigantic jet[J]. Nature Geoscience, 2009, 2(9): 617–620 doi: 10.1038/NGEO607
|
|
FULLEKRUG M, ROUSSELDUPRE R, SYMBALISTY E M D, et al. Relativistic electron beams above thunderclouds[J]. Atmospheric Chemistry & Physics & Discussions, 2011, 11(15): 7747–7754 doi: 10.5194/acp-11-7747-2011
|
|
GEMELOS E S, INAN U S, WALT M, et al. Seasonal dependence of energetic electron precipitation: Evidence for a global role of lightning[J]. Geophysical Research Letters, 2009, 36(21): 147–148 doi: 10.1029/2009GL040396
|
|
QIN Jianqi, CELESTIN S, and PASKO V P. Low frequency electromagnetic radiation from sprite streamers[J]. Geophysical Research Letters, 2012, 39(22): 1–5 doi: 10.1029/2012GL053991
|
|
STOCK M G, AKITA M, RISON W, et al. Continuous broadband digital interferometry of lightning using a generalized cross-correlation algorithm[J]. Journal of Geophysical Research Atmospheres, 2014, 119(6): 3134–3165 doi: 10.1002/2013JD020217
|
|
THOMAS R J, KREHBIEL P R, RISON W, et al. Accuracy of the lightning mapping array[J]. Journal of Geophysical Research Atmospheres, 2004, 109(D14): 1–34 doi: 10.1029/2004JD004549
|
|
CUMMINS K L, MURPHY M J, BARDO E A, et al. A combined TOA/MDF technology upgrade of the U.S. national lightning detection network[J]. Journal of Geophysical Research Atmospheres, 1998, 103(D8): 9035–9044 doi: 10.1029/98JD00153
|
|
SMITH D A, EACK K B, HARLIN J, et al. The Los Alamos Sferic Array: A research tool for lightning investigations[J]. Journal of Geophysical Research Atmospheres, 2002, 107(D13): 5–14 doi: 10.1029/2001JD000502
|
|
BITZER P M, CHRISTIAN H J, STEWART M, et al. Characterization and applications of VLF/LF source locations from lightning using the Huntsville Alabama Marx Meter Array[J]. Journal of Geophysical Research Atmospheres, 2013, 118(8): 3120–3138 doi: 10.1002/jgrd.50271
|
|
MEZENTSEV A and FULLEKRUG M. Mapping the radio sky with an interferometric network of low‐frequency radio receivers[J]. Journal of Geophysical Research Atmospheres, 2013, 118(15): 8390–8398 doi: 10.1002/jgrd.50671
|
|
FULLEKRUG M, MEZENTSEV A, WATSON R, et al. Array analysis of electromagnetic radiation from radio transmitters for submarine communication[J]. Geophysical Research Letters, 2014, 41(24): 9143–9149 doi: 10.1002/2014GL062126
|
|
FULLEKRUG M, MEZENTSEV A, WATSON R, et al. Map of low frequency electromagnetic noise in the sky[J]. Geophysical Research Letters, 2015, 42(11): 4648–4653 doi: 10.1002/2015GL064142
|
|
FULLEKRUG M, SMITH N, MEZENTSEV A, et al. Multipath propagation of low frequency radio waves inferred from high resolution array analysis[J]. Radio Science, 2015, 50(11): 1141–1149 doi: 10.1002/2015RS005781
|
|
LIU Zhongjian, KUANG L K, MEZENTSEV A, et al. Variable phase propagation velocity for long-range lightning location system[J]. Radio Science, 2016, 51(11): 1806–1815 doi: 10.1002/2016RS006058
|
|
FULLEKRUG M, LIU Zhongjian, KOH K, et al. Mapping lightning in the sky with a mini array[J]. Geophysical Research Letters, 2016, 43(19): 10448–10454 doi: 10.1002/2016GL070737
|
|
LYU Fanchao, CUMMER S A, SOLANKI R, et al. A low‐frequency near‐field interferometric TOA 3D Lightning Mapping Array[J]. Geophysical Research Letters, 2014, 41(22): 7777–7784 doi: 10.1002/2014GL061963
|
|
CARTER G C. Coherence and time delay estimation[J]. Proceedings of the IEEE, 1987, 75(2): 236–255 doi: 10.1109/PROC.1987.13723
|
Figures(8) / Tables(3)
DownLoad:
