Anti-Jamming GNSS Antenna Array Receiver with Reduced Phase Distortions Using a Robust Phase Compensation Technique

Antenna arrays with adaptive filtering can protect the integrity and functionality of global navigation satellite system (GNSS) receivers against interference. However, a major problem with existing adaptive array processing algorithms is that they cause phase distortions and introduce bias errors i...

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Bibliographic Details
Published in:Remote sensing (Basel, Switzerland) Switzerland), 2023-09, Vol.15 (17), p.4344
Main Authors: Li, Song, Wang, Feixue, Tang, Xiaomei, Ni, Shaojie, Lin, Honglei
Format: Article
Language:English
Subjects:
Accuracy
Adaptive algorithms
adaptive array processing
Adaptive filters
Algorithms
Analysis
antenna array
Antenna arrays
Antennas
Antennas (Electronics)
anti-jamming
Bias
Communications equipment
Compensation
Global navigation satellite system
GNSS receiver
Jamming
Kalman filters
Methods
Phase distortion
Phase measurement
Receivers
Receivers & amplifiers
Remote sensing
Robustness
Signal processing
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Summary:Antenna arrays with adaptive filtering can protect the integrity and functionality of global navigation satellite system (GNSS) receivers against interference. However, a major problem with existing adaptive array processing algorithms is that they cause phase distortions and introduce bias errors into the carrier phase measurement, limiting high-precision applications. In this paper, a robust phase compensation technique is proposed to reduce the phase distortion. First, a phase bias detection method is developed to trigger the phase compensation technique. Then, the phase bias is estimated using a robust estimation method and compensated for in the GNSS receiver. The proposed technique operates in real time and causes no processing delay, while requiring only a minor modification to existing GNSS receivers. This technique is applied to the power inversion adaptive antenna, and can also be extended to a wide variety of adaptive antennas. The simulation experiments verify the applicability of the proposed technique and also confirm its superiority over existing techniques.
ISSN:2072-4292
2072-4292
DOI:10.3390/rs15174344