Research on delay calibration method of VLBI terminal device
Research on delay calibration method of VLBI terminal device
- Author(s): Ma Hong ; Wei Shaojie ; Jiang Kun ; Lian Xin
- DOI: 10.1049/cp.2014.0570
For access to this article, please select a purchase option:
Buy conference paper PDF
Buy Knowledge Pack
IET members benefit from discounts to all IET publications and free access to E&T Magazine. If you are an IET member, log in to your account and the discounts will automatically be applied.
2014 International Conference on Information and Communications Technologies (ICT 2014) — Recommend this title to your library
Thank you
Your recommendation has been sent to your librarian.
- Author(s): Ma Hong ; Wei Shaojie ; Jiang Kun ; Lian Xin Source: 2014 International Conference on Information and Communications Technologies (ICT 2014), 2014 page ()
- Conference: 2014 International Conference on Information and Communications Technologies (ICT 2014)
- DOI: 10.1049/cp.2014.0570
- ISBN: 978-1-84919-843-1
- Location: Nanjing, China
- Conference date: 15-17 May 2014
- Format: PDF
VLBI(Very Long Baseline Interferometry) Terminal Device is a mixed analog and digital conversion system. Since the analog closed loop can't be built, the vector network analyzer can't be used to do delay calibration. In this paper, a delay calibration method of VLBI terminal device based on PCAL (Phase Calibration) signal is proposed. To solve the problem of low computational efficiency of PCAL signal extraction in traditional correlation method, an efficient extraction method based on DFT is proposed which use the special frequency characteristics of PCAL signal. By measuring the practical VLBI terminal device, the effectiveness of this method is verified.
Inspec keywords: radiowave interferometry; discrete Fourier transforms; calibration; mixed analogue-digital integrated circuits; radioastronomical techniques; delay estimation
Subjects: Mixed analogue-digital circuits; Integral transforms; Measurement standards and calibration; Astronomical interferometry; Radioastronomical techniques and equipment; Measurement standards and calibration
Related content
content/conferences/10.1049/cp.2014.0570
pub_keyword,iet_inspecKeyword,pub_concept
6
6