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Navigation with Indian Constellation (NavIC), earlier known as Indian Regional Navigation Satellite System (IRNSS), is an independent regional navigation satellite system, designed to provide accurate position information in the Indian subcontinent. Till May 2023, NavIC used to provide Standard Positioning Service (SPS) on two frequency bands, namely, L5 (centered at 1176.45 MHz) and S (centered at 2492.028 MHz). NavIC constellation’s newest satellite, NVS-01, launched on May 29, 2023, provides SPS on an additional frequency band, namely L1 (centered at 1575.42 MHz). This paper deals with the design considerations and the architecture of a Software Defined Radio capable to process the new NavIC L1-SPS signals. The signal structure of the new NavIC L1-SPS signals is different than that of the NavIC L5-SPS and S-SPS signals and contains several features which entail a different approach towards the implementation of a NavIC-L1 SDR as compared to a NavIC L5/S receiver.

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Design Aspects of an SDR for the New NavIC L1 SPS Signals

  • 会议论文

  • 发表日期：

    2026年

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  • Aakanksha Avnish Bhardwajan,
  • Dileep Dharmappa,
  • T. Subramanya Ganesh,
  • Sharda Vashisth,
  • Amitava Sen Gupta

摘要

Navigation with Indian Constellation (NavIC), earlier known as Indian Regional Navigation Satellite System (IRNSS), is an independent regional navigation satellite system, designed to provide accurate position information in the Indian subcontinent. Till May 2023, NavIC used to provide Standard Positioning Service (SPS) on two frequency bands, namely, L5 (centered at 1176.45 MHz) and S (centered at 2492.028 MHz). NavIC constellation’s newest satellite, NVS-01, launched on May 29, 2023, provides SPS on an additional frequency band, namely L1 (centered at 1575.42 MHz). This paper deals with the design considerations and the architecture of a Software Defined Radio capable to process the new NavIC L1-SPS signals. The signal structure of the new NavIC L1-SPS signals is different than that of the NavIC L5-SPS and S-SPS signals and contains several features which entail a different approach towards the implementation of a NavIC-L1 SDR as compared to a NavIC L5/S receiver.