In a GNSS receiver the measure of C/N0 is not only supplementary information provided to the user together with the PVT (position, velocity, time), but it is also fundamental information to determine the status of the tracking subsystems and to control the receiver in critical environments. A classic approach to estimate the C/N0 in a navigation receiver is known as the narrowband-wideband power ratio method (NWPR). We investigate the suitability of different estimation methods, properly adapted from the digital communications world where a wide range of literature is available on the problem of estimating the signal-to-noise power ratio (SNR) of M-PSK modulations in additive white Gaussian noise (AWGN). The objective here is to identify a subset of candidate algorithms for SNR estimation, previously proposed for communications receivers. These methods are compared in specific situations of interest, such as weak signals or high signal-to-noise conditions obtained with high-gain antennas, and considering software defined radio receiver implementations. Simulation campaigns and a set of real GPS-L1 signals are used to test and compare the performance of the selected algorithms in a broad range of C/N0 values (from 20 to 70 dBHz), where the classic NWPR method is used as an authoritative benchmark. We conclude that a number of low-complexity algorithms for SNR estimation, based on a simple communication signal model, can be tailored to digital GNSS receivers. The performance is comparable with respect to the NWPR approach, but the complexity is reduced and possible improvements can be foreseen using the tested algorithms.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Low Complexity Carrier-to-Noise Ratio Estimators for GNSS Digital Receivers


    Beteiligte:


    Erscheinungsdatum :

    01.01.2011


    Format / Umfang :

    4128519 byte




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Performance Bounds for Carrier-to-Noise Ratio Estimation in GPS Receivers

    Ramasubramanian, K. / Nadig, S. / Institute of Navigation | British Library Conference Proceedings | 2006


    Modernized Spaceborne GNSS Receivers

    Krauss, Peter A | Online Contents | 2008


    Hybrid Carrier Tracking with Decoupled Local Filters in Multi-Frequency GNSS Receivers

    Rong Yang / Jihong Huang / Xingqun Zhan | DOAJ | 2024

    Freier Zugriff

    ESTIMATION OF ADAPTIVE ANTENNA INDUCED CODE AND CARRIER PHASE BIAS IN GNSS RECEIVERS

    Church, C.M. / Gupta, I.J. | British Library Online Contents | 2009