| DOI: | 10.1002/2014GL060951
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| 论文题名: | Drift-scan imaging of traveling ionospheric disturbances with the Very Large Array |
| 作者: | Helmboldt J.F.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-9925
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| EISSN: | 1944-9656
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| 出版年: | 2014
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| 卷: | 41, 期:14 | | 起始页码: | 4835
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| 结束页码: | 4843
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| 语种: | 英语
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| 英文关键词: | ionospheric disturbances
; ionospheric remote sensing
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| Scopus关键词: | Ionospheric electromagnetic wave propagation
; Spectrum analysis
; High resolution image
; Ionospheric disturbance
; Ionospheric remote sensing
; Temporal and spatial
; Total electron content units
; Traveling ionospheric disturbances
; Velocity vectors
; Very large arrays
; Ionospheric measurement
; cosmic ray
; environmental disturbance
; image resolution
; ionosphere
; spatial variation
; wave propagation
; wavelength
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| 英文摘要: | This paper describes a method to use high-precision specification of traveling ionospheric disturbances (TIDs) from a relatively compact array of sensors to yield high-resolution images of TID substructure. In this case, the array is the Very Large Array (VLA) radio telescope in New Mexico. The technique begins with a combined temporal and spatial spectral analysis that boils the TID down to its basic components, namely, the amplitude and horizontal wavelength and velocity vector. The last of these is used with the known apparent motion of the observed cosmic source to recompute the horizontal positions of the ionospheric pierce points in the frame of the TID. The data are then binned within this TID reference plane and averaged to make an image. The method is applied to three distinct TIDs detected and characterized to high precision (≲10-3 total electron content unit (1 TECU = 10 16 el m-2)) using VLA observations of cosmic sources below 1 GHz. © 2014. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84904528451&doi=10.1002%2f2014GL060951&partnerID=40&md5=a732df29ed94952ab9488ffc803b4a4c
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/7189
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| Appears in Collections: | 气候减缓与适应
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作者单位: | U.S. Naval Research Laboratory, Washington, DC, United States
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| Recommended Citation: | |
Helmboldt J.F.. Drift-scan imaging of traveling ionospheric disturbances with the Very Large Array[J]. Geophysical Research Letters,2014-01-01,41(14).
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