Other
Scientific paper
Dec 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aspc..434..425t&link_type=abstract
Astronomical Data Analysis Software and Systems XIX. Proceedings of a conference held October 4-8, 2009 in Sapporo, Japan. Edite
Other
Scientific paper
Two sideband-separating (2SB) receivers (T100H & T100V) have been installed for the 45m telescope at the Nobeyama Radio Observatory (NRO). These new receivers can simultaneously observe in both sidebands (LSB & USB). For Doppler shift correction, the local frequency (Lof) correction method conventionally used in NRO is not suitable for these receivers, because the correction can be applied for only one sideband, and the correction of the other sideband is not accurate. In order to solve this problem, we have developed a new Doppler shift correction method for the 2SB receivers. In this report, we present the software Doppler shift correction method for the 2SB receivers, showing a comparison with the conventional Lof correction method (hardware correction). The software correction would be much superior to the hardware one in several aspects.
Horigome Osamu
Iono Daisuke
Kuno Nario
Sakai Tôru
Takahashi Saburo
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