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Adaptive Spoofing Suppression Algorithm for GNSS Based on Multiple Antennas Array.

Guangwei Fan1,2, Xingli Gan1,2, Baoguo Yu1,2

  • 1State Key Laboratory of Satellite Navigation System and Equipment Technology, Shijiazhuang 050081, China.

Sensors (Basel, Switzerland)
|February 23, 2020
PubMed
Summary
This summary is machine-generated.

This study introduces an adaptive spoofing suppression algorithm (ASSA) using multiple antennas to combat navigation satellite signal interference. ASSA effectively suppresses multiple spoofing signals without compromising positioning accuracy.

Keywords:
adaptive nullificationcross-correlationsatellite navigationspoofingsuppression

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Area of Science:

  • Navigation Systems
  • Signal Processing
  • Antenna Arrays

Background:

  • Navigation satellite signals are vulnerable to spoofing, leading to inaccurate position, speed, and time data.
  • Traditional methods may discard too many signals, hindering reliable positioning.

Purpose of the Study:

  • To propose an adaptive spoofing suppression algorithm (ASSA) for robust navigation.
  • To enable simultaneous suppression of multiple spoofing signals with reduced complexity.

Main Methods:

  • Utilizing a multiple antenna array for adaptive nulling based on cross-correlation gain.
  • Implementing ASSA prior to signal acquisition for early detection and elimination.

Main Results:

  • ASSA successfully suppresses multiple spoofing signals with minimal impact on positioning performance.
  • Achieved good positioning accuracy in static (2.22m, 2.41m, 4.43m) and kinematic (2.27m, 2.43m, 4.64m) tests under spoofing conditions.

Conclusions:

  • The proposed ASSA offers an effective solution for mitigating navigation signal spoofing.
  • ASSA provides a computationally efficient and robust method for enhancing navigation system reliability.