VLBI Software Correlator at the Interferometric Tracking Center of the China Deep Space Network
Abstract
With the development of computer techniques, the VLBI software correlator is more and more popular. This article presents the development and performance of the software correlator used in the Interferometric Tracking Center. The software correlator has the ability of VLBI data processing both for spacecraft navigation and VLBI geodesy. Also, the data formats of VSR (VLBI Science Receiver) and VSI (VLBI Standard Interface) are accommodated. The correlator is written modularly in the C programming language and operated by shell script. The complex vector mathematics of the IPP (Intel Integrated Performance Primitive) library is induced because the efficiency of computing can be improved greatly. Parallel algorithm processing is adopted in the software. We present the results of the multi-agency VLBI experiment conducted with the ESA Spacecraft Venus Express in May 2013 and the Chinese Chang'e-3 lunar navigation in December 2013, which verifies the performance of the software correlator.
- Publication:
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International VLBI Service for Geodesy and Astrometry 2014 General Meeting Proceedings: "VGOS: The New VLBI Network
- Pub Date:
- December 2014
- Bibcode:
- 2014ivs..conf..482H