Global navigation satellite systems (GNSS) signal processing in urban areas faces a challenge because of multiple access interference (MAI). Sky-view obstruction and surrounding objects result in the reception of GNSS signals with wide range of power. MAI, due to strong signals, generates peaks in the cross-ambiguity function (CAF) that could exceed the peak of a weaker signal being acquired. This could hinder the acquisition process. This article presents a derivation of a closed-form expression for the MAI effect on the CAF. The derived expression aims at explaining the characteristics of the MAI correlation. Furthermore, the derived expression is utilized in developing two interference mitigation algorithms, coherent and noncoherent, called CIM and NCIM, respectively. The detection probability and acquisition performance are evaluated using simulated and real data.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    MAI Modeling and Mitigation for GNSS Acquisition in Urban Environments


    Contributors:


    Publication date :

    2022-02-01


    Size :

    1165605 byte




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



    Antenna Array Based GNSS Signal Acquisition for Interference Mitigation

    Arribas, J. / Fernandez-Prades, C. / Closas, P. | IEEE | 2013


    3D LiDAR Aided GNSS NLOS Mitigation in Urban Canyons

    Wen, Weisong Weisong / Hsu, Li-Ta | IEEE | 2022


    Acquisition of GNSS signals in urban interference environment

    Wildemeersch, Matthias / Slump, Cornelis H. / Rabbachin, Alberto | IEEE | 2014