Narrow-Sector Finding of VLF-Noise Radiation Sources
Tóm tắt
We present a technique for narrow-sector finding of VLF-noise radiation sources. Hardware for the implementation of this technique is briefly described. Examples of the azimuthal arrival angles of VLF noise measured near Yakutsk in different day times in March 2000 are given. The noise radiation was mainly received from two world thunderstorm centers. These examples illustrate the possibility of resolving local sources in the global near-equatorial thunderstorm centers (at distances about 11,000 km from the African thunderstorm center).
Tài liệu tham khảo
L. T. Remizov, Natural Radio Noise [in Russian], Nauka, Moscow (1985), p. 200.
K. Okada, A. Iwai, and M. Hayakawa, Planet. Space Sci., 25, No. 3, 233 (1977).
K. Ota and M. Hayakawa, Geomagn. Aéronom., No. 1, 34 (1992).
G. I. Druzhin, V. I. Kozlov, A. D. Laptev, and V. A. Mullayarov, Geomagn. Aéronom., No. 4, 164 (1997).
V. I. Kozlov, V. A. Mullayarov, A. D. Laptev, S. P. Val'kov, and B. N. Gromov, Prib. Tekh. Éksp., No. 3, 162 (1996).
V. E. Kashprovsky, Locating Thunderstorms by Radio-Engineering Methods [in Russian], Nauka, Moscow (1966).
S. P. Val'kov and V. I. Kozlov, Prib. Tekh. Éksp., No. 4, 165 (1998).
G. I. Druzhin and V. I. Shapaev, Geomagn. Aéronom., 26, No. 1, 81 (1988).
V. I. Kozlov, A. D. Laptev, and V. A. Orlov, Manifestation of Substorms in Geophysical Phenomena[in Russian], Sib. Br. Acad. Sci. USSR (Yakutsk Division), Yakutsk (1989), p. 129.
http://www.thunder.msfc.nasa.gov/data/otdbrowse.html.