GPS Solutions

, Volume 18, Issue 1, pp 147–152 | Cite as

IRNSS-1A: signal and clock characterization of the Indian regional navigation system

  • Steffen Thoelert
  • Oliver Montenbruck
  • Michael Meurer
GNSS In Progress

Abstract

An initial characterization of the L5 and S-Band navigation signals transmitted by the first satellite of the Indian regional navigation satellite system (IRNSS) is presented. In the absence of a public signal specification, a 30 m high-gain antenna has been used to record the signal spectrum and the modulated chip sequences. For the IRNSS standard positioning service, use of a Gold ranging code is confirmed and relevant shift register parameters for the two frequencies are identified. Based on a prototype receiver, L5 single-frequency code and phase observations of IRNSS-1A have also been collected. The tracking performance is described, and the measurements are used to characterize the short-term clock stability of IRNSS-1A.

Keywords

IRNSS Signal monitoring Rubidium clock IGSO BPSK-modulation Gold codes 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Steffen Thoelert
    • 1
  • Oliver Montenbruck
    • 2
  • Michael Meurer
    • 1
    • 3
  1. 1.Institute of Communications and NavigationDeutsches Zentrum für Luft- und Raumfahrt e.V.WesslingGermany
  2. 2.German Space Operations CenterDeutsches Zentrum für Luft- und Raumfahrt e.V.WesslingGermany
  3. 3.Institute of NavigationRWTH Aachen UniversityAachenGermany

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