Development of a 4 Gbps Multifunctional Very Long Baseline Interferometry Data Acquisition System

Details Development of a 4 Gbps Multifunctional Very Long Baseline Interferometry Data Acquisition System Development of a 4 Gbps Multifunctional Very Long Baseline Interferometry Data Acquisition System

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006pasp..118.1739t&link_type=abstract

The Publications of the Astronomical Society of the Pacific, Volume 118, Issue 850, pp. 1739-1748.

Astronomy and Astrophysics

Astronomy

Instrumentation: Interferometers, Instrumentation: Polarimeters, Methods: Data Analysis, Radio Continuum: General, Techniques: Interferometric

Scientific paper

A 2048 Msps (megasamples per second) very long baseline interferometry (VLBI) data acquisition system (DAS) that has the ability to directly acquire intermediate frequency signals up to 1024 MHz bandwidth has been developed. By using these systems, 4 Gbps (4 gigabits per second = 2048 Msps, 2 bits) VLBI experimental observations were performed on 2005 November 25, and fringes were successfully detected with a newly developed software correlator. Both the data sampling rate (2 Gsps) and the total data rate (4 Gbps) were the highest rate ever used for VLBI observations. One of the applications realized with the DAS is differential VLBI measurements of deep space spacecraft, for which a wide-band recording is used for phase-reference quasars and a narrow bandwidth digital filtering is used for spacecraft. This paper describes the features of the developed DAS and cross-correlation system, results of the experimental observations, expected applications realized with the newly developed systems, and effectiveness of wide-band data acquisition for differential VLBI experiments for spacecraft navigation.

Affiliated with

Also associated with

No associations

Rating

Development of a 4 Gbps Multifunctional Very Long Baseline Interferometry Data Acquisition System does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Development of a 4 Gbps Multifunctional Very Long Baseline Interferometry Data Acquisition System, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Development of a 4 Gbps Multifunctional Very Long Baseline Interferometry Data Acquisition System will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1551495