NDLI: Design and evaluation of symmetric space–time adaptive processing of an array antenna for precise global navigation satellite system receivers

Content Provider	IET Digital Library
Author	Lee, Kihoon Lee, Jiyun
Abstract	The most effective method for overcoming the interference vulnerability of global navigation satellite system (GNSS) receivers is to use an adaptive array antenna which has the capability of nulling or beamforming to a certain direction. The space–time adaptive processing (STAP) algorithm, which is very effective in signal processing of the array antenna for anti-interference, is studied. The phenomenon of pseudorange error in STAP is analysed with a new superposition method of linear line correlation functions. From this analysis, a new symmetric STAP algorithm, which uses an appropriate constraint condition for GNSS signals, is proposed to completely prevent this pseudorange error. The new STAP algorithm performance is verified and confirmed by simulations and experiments with a four-element array antenna. According to the simulation results, the new STAP algorithm has no pseudorange error, whereas the already existing STAP algorithm has an error of 1.6 m. Also experiments with four RF channels analogue-to-digital converter data and a real-time receiver confirm the effectiveness of their precise STAP algorithm which is easy to implement.
Starting Page	758
Ending Page	764
Page Count	7
ISSN	17519675
Volume Number	11
e-ISSN	17519683
Issue Number	Issue 6, Aug (2017)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-spr/11/6
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-spr.2016.0277
Journal	IET Signal Processing
Publisher Date	2017-04-04
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	A/D And D/A Convertor Adaptive Antenna Array Adaptive Array Antenna Analogue-Digital Conversion Analogue-to-digital Converter Data Antenna Array Antiinterference Array Signal Processing Beamforming Constraint Condition Correlation Method Electromagnetic Compatibility Four-element Array Antenna GNSS Receiver Interference Interference Vulnerability Linear Line Correlation Function Precise Global Navigation Satellite System Receiver Pseudorange Error Prevention Radio Frequency Interference Radio Navigation And Direction Finding Radio Receiver Real-time Receiver RF Channel Satellite Navigation Signal Processing Signal Processing And Detection Space-time Adaptive Processing Superposition Method Symmetric Space-time Adaptive Processing Design Symmetric STAP Algorithm Wireless Channel
Content Type	Text
Resource Type	Article
Subject	Signal Processing Electrical and Electronic Engineering

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