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A Two-Stage Interference Suppression Scheme Based on Antenna Array for GNSS Jamming and Spoofing.

Jiaqi Zhang1, Xiaowei Cui2, Hailong Xu3

  • 1Department of Electronic Engineering, Tsinghua University, Beijing 100084, China. zhang-jq15@mails.tsinghua.edu.cn.

Sensors (Basel, Switzerland)
|September 11, 2019
PubMed
Summary
This summary is machine-generated.

This study introduces a two-stage antenna array scheme to effectively detect and mitigate jamming and spoofing interference for global navigation satellite systems (GNSS). The method enhances authentic signal power while suppressing malicious attacks before signal despreading.

Keywords:
Cyclic MUSIC algorithmGlobal Navigation Satellite System (GNSS)antenna arrayanti-jammingspoofing detectionspoofing mitigationsubspace projection

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Area of Science:

  • Signal Processing
  • Navigation Systems
  • Electromagnetics

Background:

  • Global Navigation Satellite Systems (GNSS) are vulnerable to intentional interference like jamming and spoofing.
  • Existing techniques struggle to simultaneously address both jamming and spoofing due to differing signal characteristics.
  • Mitigation strategies are crucial for maintaining GNSS reliability and accuracy.

Purpose of the Study:

  • To propose a novel two-stage interference suppression scheme for GNSS receivers.
  • To effectively detect and mitigate both jamming and spoofing attacks before signal despreading.
  • To enhance the power of authentic GNSS signals through advanced spatial processing.

Main Methods:

  • Utilized subspace projection to eliminate high-power jamming signals.
  • Employed cyclostationarity of GNSS signals to refine spatial correlation matrices.
  • Introduced a cyclic correlation eigenvalue test (CCET) for spoofing detection and Cyclic MUSIC for direction-of-arrival (DOA) estimation.
  • Applied a second subspace projection and beamforming for spoofing suppression and authentic signal enhancement.

Main Results:

  • The proposed scheme effectively suppresses jamming and spoofing interference.
  • Maximizes the power of authentic GNSS signals.
  • Operations performed on raw digital baseband signals, avoiding additional computational complexity.
  • Estimated DOAs of spoofing signals may aid in interference source localization.

Conclusions:

  • The two-stage antenna array scheme provides robust protection against GNSS jamming and spoofing.
  • The method maintains GNSS signal integrity and enhances authentic signal reception.
  • This approach offers a computationally efficient solution for advanced GNSS receivers.