Blar i forfatter "Chau, J.L."

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    • An imaging interferometry capability for the EISCAT Svalbard Radar. 

      Grydeland, Tom; Chau, J.L.; La Hoz, C.; Brekke, Asgeir (Journal article; Peer reviewed; Tidsskriftartikkel, 2005-01-31)
      Interferometric imaging (aperture synthesis imaging) is a technique used by radio astronomers to achieve angular resolution that far surpasses what is possible with a single large aperture. A similar technique has been used for radar imaging studies of equatorial ionospheric phenomena at the Jicamarca Radio Observatory. We present plans for adding an interferometric imaging capability to the ...

    • Solved and unsolved riddles about low-latitude daytime valley region plasma waves and 150-km echoes 

      Chau, J.L.; Longley, W.J.; Reyes, P.M.; Pedatella, N.M.; Otsuka, Y.; Stolle, C.; Liu, H.; England, S.L.; Vierinen, Juha; Milla, M.A.; Hysell, D.L.; Oppenheim, M.M.; Patra, A.; Lehmacher, G.; Kudeki, E. (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-02-27)
      The Earth’s atmosphere near both the geographic and magnetic equators and at altitudes between 120 and 200 km is called the low-latitude valley region (LLVR) and is among the least understood regions of the ionosphere/thermosphere due to its complex interplay of neutral dynamics, electrodynamics, and photochemistry. Radar studies of the region have revealed puzzling daytime echoes scattered from ...