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New Adaptive All-pass Based Notch Filter for Narrowband/FM Anti-jamming GPS Receivers

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Abstract

The global positioning system (GPS), which provides accurate positioning and timing information, has become a commonly used navigation instrument for many applications. The application of a new adaptive all-pass based notch filter (ANFA) for narrowband/FM interference suppression and frequency estimation in GPS receivers is proposed. An ANFA structure that achieves better unbiased characteristics with its coefficients is employed to accurately estimate the narrowband interfering signals in online fashion. A variable convergence factor that optimizes the maximal mean square error (MSE) reduction in each iteration is applied in a modified adaptive Gaussian–Newton (MAGN) algorithm. The proposed MAGN algorithm can lead to both faster convergence speed and higher estimation accuracy. Simulation results show that the ANFA offers a better performance than conventional linear predictors in terms of the SNR improvement and the mean output power (MOP) under the interference environments of interest.

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Authors and Affiliations

  1. Department of Electronic Engineering, National Formosa University, No. 64, Wunhua Road, Huwei Township, 63210, Yunlin County, Taiwan, ROC

    Wei-Lung Mao

  2. Department of Electrical Engineering, National Taiwan University, Taipei, 10617, Taiwan, ROC

    Wann-Jiun Ma

  3. Integrated Logistical Support Center, Chung-Shan Institute of Science and Technology, Taoyuan, Taiwan, ROC

    Ying-Ren Chien

  4. Department of Electrical Engineering, Mingchi University of Technology, Taipei, Taiwan, ROC

    Chia-Hao Ku

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  1. Wei-Lung Mao
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  2. Wann-Jiun Ma
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  3. Ying-Ren Chien
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  4. Chia-Hao Ku
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Correspondence to Wei-Lung Mao.

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Mao, WL., Ma, WJ., Chien, YR. et al. New Adaptive All-pass Based Notch Filter for Narrowband/FM Anti-jamming GPS Receivers. Circuits Syst Signal Process 30, 527–542 (2011). https://doi.org/10.1007/s00034-010-9242-0

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  • DOI: https://doi.org/10.1007/s00034-010-9242-0

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