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A GNSS interference identification using an adaptive cascading IIR notch filter

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Abstract

A low-complexity time-domain approach for global navigation satellite systems is proposed to detect and identify single-tone, multi-tone, swept continuous wave interference (CWI) and band-limited white Gaussian noise (BLWN). An adaptive notch filter and adaptive cascading filter structure are employed to identify the type of interference signals. The number of the cascading stages is selected by comparing the total power in receiver bandpass, and after, passing the adaptive notch filter. For this reason, the proposed filter structure is more efficient in identifying and mitigating interference signals than the conventional filter structure. In addition, the automatic gain control gain is used to detect the existence of continuous wave interference. The performance of the interference detection and identification method is evaluated for the cases of GPS signal in the presence of single-tone, multi-tone, swept CWI and BLWN.

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Acknowledgments

This work has been supported by the National GNSS Research Center program of the Defense Acquisition Program Administration and Agency for Defense Development.

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Authors and Affiliations

  1. Mechanical and Aerospace Engineering and Automation and System Research Institute, Seoul National University, Kawnak-Gu, Seoul, 151-744, Republic of Korea

    Chang Ho Kang, Sun Young Kim & Chan Gook Park

  2. Mechanical and Aerospace Engineering and the Institute of Advanced Aerospace Technology, Seoul National University, Kawnak-Gu, Seoul, 151-744, Republic of Korea

    Chan Gook Park

Authors
  1. Chang Ho Kang
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  2. Sun Young Kim
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  3. Chan Gook Park
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Correspondence to Chan Gook Park.

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Kang, C.H., Kim, S.Y. & Park, C.G. A GNSS interference identification using an adaptive cascading IIR notch filter. GPS Solut 18, 605–613 (2014). https://doi.org/10.1007/s10291-013-0358-0

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  • DOI: https://doi.org/10.1007/s10291-013-0358-0

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