Reduction of Meteor Velocities from Continuous-wave Radio Records

McKinley, D. W. R.; Webb, Erica; Beals, C. S.

doi:10.1093/mnras/122.3.255

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“…Look closer, and you will find a dynamic environment rife with disturbances spanning a wide range in amplitude/strength as well as in spatial/temporal scales. These include midlatitude spread F [e.g., Sastri , ; Soicher et al , ; Hajkowicz , ], sporadic E [e.g., Miller and Smith , ; Bowman , ; Pan and Tsunoda , ; Hysell and Burcham , ], transient meteor‐induced ion trails [e.g., Ellyett and Davies , ; McKinley and Webb , ; Elford , ], turbulent density fluctuations [ Cohen and Röttgering , ; Helmboldt et al , ], and a variety of wavelike perturbations, typically referred to with the catchall term, traveling ionospheric disturbances (TIDs).…”

Section: Introductionmentioning

confidence: 99%

Drift‐scan imaging of traveling ionospheric disturbances with the Very Large Array

Helmboldt

2014

Geophysical Research Letters

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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 = 1016 el m−2)) using VLA observations of cosmic sources below 1 GHz.

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Section: Introductionmentioning

confidence: 99%

Drift‐scan imaging of traveling ionospheric disturbances with the Very Large Array

Helmboldt

2014

Geophysical Research Letters

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Reduction of Meteor Velocities from Continuous-wave Radio Records

Cited by 1 publication

References 0 publications

Drift‐scan imaging of traveling ionospheric disturbances with the Very Large Array

Drift‐scan imaging of traveling ionospheric disturbances with the Very Large Array

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