Institutional Repository of Radio Astronomy Research Laboratory
| E-LFVN - An Internet Based VLBI Network | |
Tuccari, G.1; Molotov, I.2; Nechaeva, M.3; Volvach, A.4; Xiang, L.5 ; Hong, X.6; Buttaccio, S.1; Gorshenkov, Y.7; Nicotra, G.1
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| 2004-10-01 | |
| Conference Name | European VLBI Network on New Developments in VLBI Science and Technology |
| Source Publication | Proceedings of the 7th European VLBI Network Symposium |
| Pages | 331-332 |
| Conference Date | October 12th-15th 2004 |
| Conference Place | Toledo, Spain |
| Country | Spain |
| Contribution Rank | 5 |
| Abstract | A narrow band e-VLBI system is operating as a part of the LFVN (Low Frequency VLBI Network) activity taking advantages by the relatively small portion of band necessary in a certain class of radioastronomy observations. Data are acquired using a simple dedicate terminal and recorded on disk. The maximum recorded signal band is 48 MHz wide, flexibly scalable up to few kilohertz and then with the concrete possibility to transfer the full amount or portion of it in near real time to a correlation point, using the standard Internet connection, when narrow band acquisitions are appropriate. Radar, spectral lines, low frequency, spacecraft navigation observations can benefit from this inexpensive solution in those stations where large antennas and sensitive receivers are available, and where is still missing the possibility to use standard VLBI terminals, giving then yet the possibility to perform radio astronomy research. The network terminal is at present placed in Noto (Italy), Bear Lakes (Russia), Urumqi (China), Simeiz (Ukraine), Evpatoria (Ukraine) and is going to be expanded with a digital baseband backend system. During 2003 and 2004 this terminals and method have been successfully tested in real experiments having as targets debris, asteroids, planets. A further improvement will be to add station based pre-processing steps to optimize the data transfer. This work was supported by INTAS 01-0669, INTAS IA-01-02, RFBR 02-02-17568 and RFBR-02-02-39023 grants. |
| URL | 查看原文 |
| Indexed By | 其他 |
| Language | 英语 |
| Document Type | 会议论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/4158 |
| Collection | 射电天文研究室_星系宇宙学研究团组 |
| Affiliation | 1.Radioastronomy Institute CNR, Noto Section, Italy; 2.Bear Lakes Radio Astronomy Station, Central Astronomical Observatory at Pulkovo RAS, S.Petersburg, Russia; 3.Radio Physical Research Institute, Nizhnij Novgorod, Russia; 4.Lab. Radio Astronomy of Crimean Astrophysical Observatory, Crimea; 5.Urumqi Astronomical Observatory, NAOC, China; 6.Shanghai Astronomical Observatory, CAS, China; 7.aSpecial Research Bureau, Moscow Power Engineering Institute, Moscow, Russia |
| Recommended Citation GB/T 7714 | Tuccari, G.,Molotov, I.,Nechaeva, M.,et al. E-LFVN - An Internet Based VLBI Network[C],2004:331-332. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Tuccari-2004-E-LFVN （155KB） | 会议论文 | 开放获取 | CC BY-NC-SA | View Application Full Text | ||
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