Interference Suppression for High Precision Navigation Using Vector-Based GNSS Software Receivers

Tao Lin, Mohammad Abdizadeh, Ali Broumandan, Da Wang, Kyle O'Keefe, and Gerard Lachapelle

Abstract:	Vector-based tracking has gained much attention due to its superior code phase and carrier Doppler tracking performance compared to scalar tracking architecture under Radio Frequency (RF) interference. However, the robustness of vector-based tracking still cannot satisfy the requirements for many applications under strong RF interference conditions. Moreover, because the pseudorange and pseudorange-rate based navigation solution feedback in vector-based tracking only controls the code phase and carrier Doppler tracking, individual carrier phase tracking is still required. Therefore, it is desirable to improve the carrier phase tracking performance in vector-based receivers under strong interference. In this paper, two multi-pole complex adaptive Infinite Impulse Response (IIR) and Finite Impulse Response (FIR) notch filtering techniques have been implemented in a GNSS vector-based software receiver to mitigate Continuous Wave Interference (CWI) and swept interference. The main focus of this paper is the implementation and the performance comparison of these two notch filters in a GNSS vector-based software receiver by processing simulated GNSS signals with CWI and swept interference generated from a hardware simulator.
Published in:	Proceedings of the 24th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2011) September 20 - 23, 2011 Oregon Convention Center, Portland, Oregon Portland, OR
Pages:	372 - 383
Cite this article:	Lin, Tao, Abdizadeh, Mohammad, Broumandan, Ali, Wang, Da, O'Keefe, Kyle, Lachapelle, Gerard, "Interference Suppression for High Precision Navigation Using Vector-Based GNSS Software Receivers," Proceedings of the 24th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2011), Portland, OR, September 2011, pp. 372-383.
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