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标题：An Experiment on Radio Location of Objects in the Near-Earth Space with VLBI in 2012
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作者：M. Nechaeva ; A. Antipenko ; V. Bezrukovs 等
期刊名称：Open Astronomy
电子版ISSN：2543-6376
出版年度：2013
卷号：22
期号：1
页码：35-41
DOI：10.1515/astro-2017-0145
语种：English
出版社：Walter de Gruyter GmbH & Co. KG
摘要：AbstractAn experiment on radar location of space debris objects using of the method of VLBI was carried out in April, 2012. The radar VLBI experiment consisted in irradiation of some space debris objects (4 rocket stages and 5 inactive satellites) with a signal of the transmitter with RT-70 in Evpatoria, Ukraine. Reflected signals were received by a complex of radio telescopes in the VLBI mode. The following VLBI stations took part in the observations: Ventspils (RT-32), Urumqi (RT-25), Medicina (RT-32) and Simeiz (RT-22). The experiment included measurements of the Doppler frequency shift and the delay for orbit refining, and measurements of the rotation period and sizes of objects by the amplitudes of output interferometer signals. The cross-correlation of VLBI-data is performed at a correlator NIRFI-4 of Radiophysical Research Institute (Nizhny Novgorod). Preliminary data processing resulted in the series of Doppler frequency shifts, which comprised the information on radial velocities of the objects. Some results of the experiment are presented.
关键词：Keywordsinstrumentation: interferometers, Very Long Baseline Interferometrytechniques: interferometric, radar astronomyephemeris