Computer Science – Sound
Scientific paper
Dec 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agufm.p31b1393h&link_type=abstract
American Geophysical Union, Fall Meeting 2008, abstract #P31B-1393
Computer Science
Sound
2756 Planetary Magnetospheres (5443, 5737, 6033), 2772 Plasma Waves And Instabilities (2471), 6250 Moon (1221)
Scientific paper
KAGUYA (SELENE) is a Japanese lunar orbiter launched on September 14, 2007. The Lunar Radar Sounder (LRS) is one of the scientific instruments on board KAGUYA. It consists of three subsystems: the sounder observation (SDR), the natural plasma wave receiver (NPW), and the wave form capture (WFC). The WFC measures two components of electric wave signals detected by the two orthogonal 30 m tip-to-tip antennas from 100Hz to 1MHz. WFC-H [1] observes plasma wave spectra in 1-1000kHz and AKR (auroral kilometric radiation) is often observed. Occultation of AKR occurs when the satellite goes behind the moon. Its frequency dependence and effects of the relative positions of the earth, the moon with the satellite will be evaluated. How the occultation is useful for the source estimation of AKR will be examined. Effects of a single rounded obstacle on diffraction [2] will also be examined. Background AKR emissions will be evaluated by Geotail observation if possible. Acknowledgments: The SELENE project has been organized by the Japan Aerospace Exploration Agency (JAXA). The authors express their thanks to all members of the SELENE project team. References [1] Y. Kasahara, Y. Goto, K. Hashimoto, T. Imachi, A. Kumamoto, T. Ono, and H. Matsumoto, Plasma Wave Observation Using Waveform Capture in the Lunar Radar Sounder on board the SELENE Spacecraft, Earth, Planets and Space, 60, 341-351, 2008. [2] Recommendation ITU-R P.526-8, Propagation by diffraction, ITU, 2003.
Hashimoto Katsumi
Kasahara Yasushi
Kumamoto Akihito
Matsumoto Haru
Ono Takafumi
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