VLBI2010: Next Generation VLBI System for Geodesy and Astrometry

Petrachenko, W. T.; Niell, A. E.; Corey, B. E.; Behrend, Dirk; Schuh, Harald; Wresnik, J.

doi:10.1007/978-3-642-20338-1_125

Cited by 65 publications

(61 citation statements)

References 3 publications

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“…Beyond the NASA development effort, organizations in other countries are involved in system developments potentially applicable to VLBI2010. These include Australia, China, Finland, Germany, Italy, Japan, Norway, Spain, Sweden, and others (Petrachenko et al, 2012). Table 4 juxtaposes the main design features of the current and the next generation VLBI systems.…”

Section: Next Generation Vlbi Systemmentioning

confidence: 98%

“…In a final step, the phase offset is determined. The system development effort for VLBI2010 involves nearly a complete reworking of the current S/X system (Petrachenko, 2010). The implications for the VLBI2010 signal path are profound.…”

Section: Next Generation Vlbi Systemmentioning

confidence: 99%

“…The simulators have been used to study the effects of the dominant VLBI random error processes (related to the atmosphere, the reference clocks, and the delay measurement noise) and the benefit of new approaches to reduce them, such as decreasing the source-switching interval and improving analysis and scheduling strategies (Petrachenko et al, 2012). Based on the results of these simulations, the requirements stemming from GGOS, redundancy and robustness considerations, and maintenance and repair requirements the V2C made the following recommendations for the minimum next generation VLBI network :…”

Section: Next Generation Vlbi Systemmentioning

confidence: 99%

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VLBI: A fascinating technique for geodesy and astrometry

Schuh

Behrend

2012

Journal of Geodynamics

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260

131

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a b s t r a c tSince the 1970s Very Long Baseline Interferometry (VLBI) has proven to be a primary space-geodetic technique by determining precise coordinates on the Earth, by monitoring the variable Earth rotation and orientation with highest precision, and by deriving many other parameters of the Earth system. VLBI provides an important linkage to astronomy through, for instance, the determination of very precise coordinates of extragalactic radio sources. Additionally, it contributes to determining parameters of relativistic and cosmological models. After a short review of the history of geodetic VLBI and a summary of recent results, this paper describes future perspectives of this fascinating technique. The International VLBI Service for Geodesy and Astrometry (IVS), as a service of the International Association of Geodesy (IAG) and the International Astronomical Union (IAU), is well on its way to fully defining a next generation VLBI system, called VLBI2010. The goals of the new system are to achieve on scales up to the size of the Earth an accuracy of 1 mm in position and of 0.1 mm/year in velocity. Continuous observations shall be carried out 24 h per day 7 days per week in the future with initial results to be delivered within 24 h after taking the data. Special sessions, e.g. for monitoring the Earth rotation parameters, will provide the results in near real-time. These goals require a completely new technical and conceptual design of VLBI measurements. Based on extensive simulation studies, strategies have been developed by the IVS to significantly improve its product accuracy through the use of a network of small (∼12 m) fast-slewing antennas. A new method for generating high precision delay measurements as well as improved methods for handling biases related to radio source structure, system electronics, and deformations of the antenna structures has been developed. Furthermore, as of January 2012, the construction of ten new VLBI2010 sites has been funded, with good prospects for one dozen more antennas, which will improve the geographical distribution of geodetic VLBI sites on Earth and provide an important step toward a global VLBI2010 network. Within this paper, the Global Geodetic Observing System (GGOS) of the IAG will also be introduced and the contribution of VLBI to GGOS will be described.

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Section: Next Generation Vlbi Systemmentioning

confidence: 98%

Section: Next Generation Vlbi Systemmentioning

confidence: 99%

Section: Next Generation Vlbi Systemmentioning

confidence: 99%

See 1 more Smart Citation

VLBI: A fascinating technique for geodesy and astrometry

Schuh

Behrend

2012

Journal of Geodynamics

Self Cite

260

131

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“…Together with an MK5B recorder (see Section 5.4), one of these DBBCs has been in use with the Warkworth 12-m telescope since 2009. Originally developed as part of a RadioNet project started in 2005 to provide a digital replacement for the analogue converters in the VLBI acquisition systems of the EVN radio observatories (Petrachenko et al 2010), the DBBCs are now in widespread international use.…”

Section: Digital Base Band Convertermentioning

confidence: 99%

Conversion of a New Zealand 30-Metre Telecommunications Antenna into a Radio Telescope

Woodburn

Natusch

Weston

et al. 2015

Publ. Astron. Soc. Aust.

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The conversion of a former 100-foot (30-m) telecommunications antenna (Earth Station) in New Zealand into a radio telescope is described. A specification of the antenna and the priorities for its actual conversion are initially presented. In describing the actual conversion, particular emphasis is given to mechanical and electrical components, as well as to the design of the telescope control system, telescope networking for VLBI operations, and telescope maintenance. Plans for RF, front-and back-end developments based upon radio astronomical priorities are outlined.

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“…The design of the new AuScope telescopes was driven by a new paradigm for the IVS, defined by a study team in the early 2000's and given the name VLBI2010 (Niell et al 2007;Petrachenko et al 2010). A critical specification for the new telescope design is drive speed.…”

Section: Introductionmentioning

confidence: 99%