Dual-polarized GPS antenna array algorithm to adaptively mitigate a large number of interference signals

Kwansik Park, Dongkook Lee, Jiwon Seo

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)

Abstract

Intentional or unintentional interference experienced by the Global Positioning System (GPS) is a significant concern for GPS-based critical infrastructures and services including aviation. An effective way to mitigate GPS interference is to utilize a GPS antenna array capable of electronically changing its gain pattern. Although a conventional GPS antenna array consists of single-polarized antenna elements, a dual-polarized antenna array has the potential to mitigate approximately twice the number of interference signals in the spatial domain as a single-polarized array because of the additional degrees of freedom provided. This paper proposes an adaptive beamforming algorithm using a dual-polarized GPS antenna array for mitigation of interference signals with various polarizations. In this paper, a dual-polarized antenna element specifically refers to two co-located crossed linearly polarized dipole antennas. The proposed minimum-variance-distortionless-response (MVDR)-based space–time adaptive processing (STAP) method utilizes a novel constraint vector that is specially designed for a dual-polarized GPS array. As the proposed constraint vector considers realistic radiation patterns of the antenna, the performance of the proposed method in terms of the signal-to-interference-plus-noise power ratio (SINR) is noticeably superior to that of previous methods under a representative interference scenario. The performance of the proposed method is compared with three previous methods utilizing dual-polarized antenna arrays.

Original languageEnglish
Pages (from-to)387-396
Number of pages10
JournalAerospace Science and Technology
Volume78
DOIs
Publication statusPublished - 2018 Jul

Bibliographical note

Funding Information:
This work has been supported by the National GNSS Research Center program of Defense Acquisition Program Administration and Agency for Defense Development . This research was also supported by the Ministry of Science and ICT (MSIT), Korea, under the ICT Consilience Creative Program ( IITP-2018-2017-0-01015 ) supervised by the Institute for Information & Communications Technology Promotion (IITP).

Funding Information:
This work has been supported by the National GNSS Research Center program of Defense Acquisition Program Administration and Agency for Defense Development. This research was also supported by the Ministry of Science and ICT (MSIT), Korea, under the ICT Consilience Creative Program (IITP-2018-2017-0-01015) supervised by the Institute for Information & Communications Technology Promotion (IITP).

Publisher Copyright:
© 2018 Elsevier Masson SAS

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering

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