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Open Access

Effects of Power Inversion Spatial Only Adaptive Array on GNSS Receiver Measurements

Department of Electronic Engineering, Tsinghua University, Beijing 100084, China.
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Abstract

The Spatial Only Processing Power Inversion (SOP-PI) algorithm is frequently used in Global Navigation Satellite System (GNSS) adaptive array receivers for interference mitigation because of its simplicity ofimplementation. This study investigates the effects of SOP-PI on receiver measurements for high-precisionapplications. Mathematical deductions show that if an array with a centro-symmetrical geometry is used, ideally, SOP-PI is naturally bias-free; however, this no longer stands when non-ideal factors, including array perturbations and finite-sample effect, are added. Simulations are performed herein to investigate how exactly the arrayperturbations affect the carrier phase biases, while diagonal loading and forward-backward averaging are proposed to counter the finite-sample effect. In conclusion, whether SOP-PI with a centro-symmetrical array geometry will satisfy the high precision demands mainly depends on the array perturbation degree of the element amplitude and the phase center.

Keywords

Global Navigation Satellite System (GNSS) receiveradaptive arrayhigh-precision applicationpower inversionmeasurement biasarray perturbationdiagonal loadingforward-backward averaging

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Tsinghua Science and Technology
Volume 23 Issue 2,
April 2018
Pages 172-183
DOI: 10.26599/TST.2018.9010019
Cite this article:
Xu H, Cui X, Lu M. Effects of Power Inversion Spatial Only Adaptive Array on GNSS Receiver Measurements. Tsinghua Science and Technology, 2018, 23(2): 172-183. https://doi.org/10.26599/TST.2018.9010019

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Received: 17 January 2017
Accepted: 09 April 2017
Published: 02 April 2018
© The author(s) 2018
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