Blind Adaptive Beamforming for a Global Navigation Satellite System Array Receiver Based on Direction Lock Loop

The adaptive beamforming algorithm can realize interference suppression and navigation signal enhancement, and has been widely used. However, achieving high-precision real-time estimation of the direction of arrival (DOA) parameters of navigation signals in strong-interference scenarios with low com...

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Published inRemote sensing (Basel, Switzerland) Vol. 15; no. 13; p. 3387
Main Authors Wu, Jian, Tang, Xiaomei, Huang, Long, Ni, Shaojie, Wang, Feixue
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.07.2023
Subjects
Adaptability
Adaptive algorithms
Algorithms
Antenna arrays
Antennas
array antenna
Arrays
Artificial satellites in navigation
Beamforming
blind adaptive beamforming
Code Division Multiple Access
Complexity
direction lock loop
Direction of arrival
DOA estimation
Eigenvalues
Electromagnetic interference
Global navigation satellite system
global positioning systems
GNSS
Interference
Methods
Parameter estimation
Parameters
Prevention
Real time
Receivers & amplifiers
satellites
Signal processing
Signal to noise ratio
Theoretical analysis
Tracking
China
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Abstract The adaptive beamforming algorithm can realize interference suppression and navigation signal enhancement, and has been widely used. However, achieving high-precision real-time estimation of the direction of arrival (DOA) parameters of navigation signals in strong-interference scenarios with low complexity is still a challenge. In this paper, a blind adaptive beamforming algorithm for a Global Navigation Satellite System (GNSS) array receiver based on direction lock loop is proposed without using the prior information of the DOA parameter. The direction lock loop is used for DOA tracking and estimation after interference suppression, which uses the spatial correlation of the array beam pattern to construct a closed direction-tracking loop. The DOA estimation value is adjusted in real time based on the loop errors. A blind beamformer is constructed using the DOA estimation results to provide gain by forming a beam in the satellite direction. This method improves the accuracy and dynamic adaptability of DOA estimation while significantly reducing the computational complexity. The theoretical analysis and simulation results verify the effectiveness of the proposed algorithm.
AbstractList The adaptive beamforming algorithm can realize interference suppression and navigation signal enhancement, and has been widely used. However, achieving high-precision real-time estimation of the direction of arrival (DOA) parameters of navigation signals in strong-interference scenarios with low complexity is still a challenge. In this paper, a blind adaptive beamforming algorithm for a Global Navigation Satellite System (GNSS) array receiver based on direction lock loop is proposed without using the prior information of the DOA parameter. The direction lock loop is used for DOA tracking and estimation after interference suppression, which uses the spatial correlation of the array beam pattern to construct a closed direction-tracking loop. The DOA estimation value is adjusted in real time based on the loop errors. A blind beamformer is constructed using the DOA estimation results to provide gain by forming a beam in the satellite direction. This method improves the accuracy and dynamic adaptability of DOA estimation while significantly reducing the computational complexity. The theoretical analysis and simulation results verify the effectiveness of the proposed algorithm.
Audience Academic
Author Wang, Feixue
Ni, Shaojie
Wu, Jian
Tang, Xiaomei
Huang, Long
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CitedBy_id crossref_primary_10_3390_rs15174344
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StartPage 3387
SubjectTerms Adaptability
Adaptive algorithms
Algorithms
Antenna arrays
Antennas
array antenna
Arrays
Artificial satellites in navigation
Beamforming
blind adaptive beamforming
Code Division Multiple Access
Complexity
direction lock loop
Direction of arrival
DOA estimation
Eigenvalues
Electromagnetic interference
Global navigation satellite system
global positioning systems
GNSS
Interference
Methods
Parameter estimation
Parameters
Prevention
Real time
Receivers & amplifiers
satellites
Signal processing
Signal to noise ratio
Theoretical analysis
Tracking
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Title Blind Adaptive Beamforming for a Global Navigation Satellite System Array Receiver Based on Direction Lock Loop
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