A new correlation algorithm of VLBI based on spectrum shift elimination

Author

Songtao Han ; Geshi Tang

Author_Institution

Beijing Aerosp. Control Center, Nat. Key Lab. of Sci. & Technol. on Aerosp. Flight Dynamics, Beijing, China

fYear

2014

fDate

19-23 Oct. 2014

Firstpage

2340

Lastpage

2343

Abstract

This paper presents a new algorithm of correlation processing in the domain VLBI(Very Long Baseline Interferometry). For VLBI tracking by cross-cooperation of multi-organizations, the problem of different sampling rate parameter may be encountered. The algorithm in this paper has the advantages of low computational burden and higher accuracy. Because both computational burden and signal-to-noise loss caused by resampling are avoided. For data processing of Venus Express(VEX) experiment, the accuracy of interferogram improved about 10 percent compared with resampling algorithm, and the efficiency improved 20 percent, which testified the effectiveness of our algorithm.

Keywords

computational complexity; correlation methods; radiowave interferometry; signal sampling; VEX data processing; VLBI tracking; Venus Express data processing; computational burden; correlation algorithm; multiorganization cross-cooperation; sampling rate parameter; signal-to-noise loss; spectrum shift elimination; very long baseline interferometry; Abstracts; Accuracy; Algorithm design and analysis; Delays; Noise; Quantization (signal); Vectors; VLBI; Venus Express; correlation; interferogram; spectrum shift;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing (ICSP), 2014 12th International Conference on

Conference_Location

Hangzhou

ISSN

2164-5221

Print_ISBN

978-1-4799-2188-1

Type

conf

DOI

10.1109/ICOSP.2014.7015412

Filename

7015412