A generic 2048‐point FFT acquisition architecture is proposed to address L1 civil signals from all four GNSS constellations. After emphasizing hardware design criteria and their resulting design limitations, software compensation approaches are compared. A detailed validation methodology, involving a successive 1000‐step Monte‐Carlo study, was defined to optimally configure the acquisition channel, with new metrics to establish formal signal detection. The integration thereof results in a novel, minimalistic, yet generic, acquisition channel implementation, as well as a thorough validation method. Execution time of one acquisition iteration is approximately 5 ms, in line with VHDL simulations and foreseen channel management overhead. Coarse/fine search increments and thresholds are based on extensive experimentation. A 41 dB‐Hz acquisition sensitivity threshold was established to achieve >95 % detection rates for 1 ms integrations, while 15 ms non‐coherent integrations are required for signal strengths down to 37 dB‐Hz. These thresholds account for known implementation losses. Copyright © 2015 Institute of Navigation


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Implementation Strategies for a Software‐Compensated FFT‐based Generic Acquisition Architecture with Minimal FPGA Resources



    Published in:

    Navigation ; 62 , 3


    Publication date :

    2015




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English



    Classification :

    BKL:    55.54 Flugführung / 55.86 Schiffsverkehr, Schifffahrt / 53.84 Ortungstechnik, Radartechnik
    Local classification TIB:    770/5680/7035



    Generic SDR architecture: Vendor independent implementation

    Venkita Giri, Shankar Giri / Price, Gregory A. / Zekavat, Seyed | IEEE | 2014


    An FPGA Implementation of GPS L5 Signal Acquisition

    Subramaniayan, Ashokkumar / Babu, Ravindra | AIAA | 2006



    Generic software architecture for cost efficient powertrain electrification

    Korsunsky, Evgeny / Bachinger, Markus / Stolz, Michael et al. | SAE Technical Papers | 2015


    Generic software architecture for cost efficient powertrain electrification

    Ebner,W. / Stolz,M. / Bachinger,M. et al. | Automotive engineering | 2015