Results 131 to 140 of about 15,217 (172)

Milliarcsecond-resolution Radio-imaging Survey of Blazar Candidates at 4 < z < 5.4

open access: yesThe Astrophysical Journal Supplement Series
We present a milliarcsecond-resolution radio survey of 17 high-redshift (4 ≤ z ≤ 5.4) blazar candidates observed with the European Very Long Baseline Interferometry (VLBI) Network at 5 GHz.
Máté Krezinger   +11 more
doaj   +1 more source

GSFC VLBI Analysis center [PDF]

open access: yes, 2005
This report presents the activities of the GSFC VLBI Analysis Center during 2004. The GSFC Analysis Center analyzes all IVS sessions, makes regular IVS submissions of data and analysis products, and performs research and software development activities ...
Ma, Chopo   +4 more
core  

JPL VLBI Analysis Center Report for 2012 [PDF]

open access: yes, 2013
This report describes the activities of the JPL VLBI Analysis Center for the year 2012. The highlight of the year was the successful MSL rover Mars landing, which was supported by VLBI-based navigation using our combined spacecraft, celestial reference ...
Jacobs, Chris
core  

Future of VLBI [PDF]

open access: yesProceedings of Resolving The Sky - Radio Interferometry: Past, Present and Future — PoS(RTS2012), 2012
openaire   +1 more source

DSN Network e-VLBI Calibration of Earth Orientation

open access: yes, 2006
This viewgraph presentation reviews the calibration of the Earth's orientation by using the Deep Space Network (DSN) e Very Large Base Integration (VLBI). The topics include: 1) Background: TEMPO; 2) Background: UT1 Knowledge Error; 3) e-VLBI: WVSR TEMPO
Lanyi, G.   +3 more
core  

VLBI标准接口数据输入模块和数据输出模块的设计及FPGA实现

open access: yes, 2006
甚长基线干涉测量(VLBI)是天文学和测地学研究中的重要观测技术之一。由于它具有国际性的特点,近年来人们提出了VLBI标准接口的概念,并迅速制定了相关规范。为了与国际VLBI站保持同步,上海天文台的VLBI设备在将来也需要具有VLBI标准接口,因此如何实现VLBI标准接口是一个值得研究的课题。 本文主要阐述基于FPGA实现VLBI标准接口数据输入模块和数据输出模块。最前两章介绍了VLBI技术原理及VLBI标准接口的发展;第三章简要介绍了开发环境和验证工具;第四章详细描述了分别为两个模块搭建的测试系统 ...
殷妮
core  

Supernova VLBI [PDF]

open access: yesProceedings of The 9th European VLBI Network Symposium on The role of VLBI in the Golden Age for Radio Astronomy and EVN Users Meeting — PoS(IX EVN Symposium), 2009
openaire   +1 more source

DBBC3: VLBI at 32 Gbits per second [Elektronisk resurs]

open access: yes, 2012
The project to develop the third generation of a digital backend system (DBBC3) for VLBI and other applications is presented, including an overview of the evolution of this system.
Wunderlich, M.,   +10 more
core  

DBBC3 — The new wide-band backend for VLBI

open access: yes, 2018
The DBBC3 VLBI digital backend is the successor of the most widely adapted digital VLBI backend DBBC2. The DBBC3 offers much wider bandwidth and integrated Ethernet output.
Wunderlich, M.,   +8 more
core  

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