The effects of interference on frequency-locked Doppler tracking loops are investigated. Conditions for jump from locking on the desired signal to locking on the interfering signal are established. Parasitic frequency modulation of the desired signal results when the other signal interferes with it. The index of this parasitic modulation as a function of the interference-to-desired signal amplitude ratio is computed. Both critical amplitude ratio and critical parasitic modulation index at the occurrence of jump are derived. Comparing frequency-locked loops with phase-locked loops with phase-locked loops in the presence of interference shows the former performs better for most cases of practical importance in Doppler tracking systems.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Interference in Frequency-Locked Doppler Tracking Loops


    Contributors:
    Bar-Ness, Y. (author) / Bunin, H. (author)

    Published in:

    Publication date :

    1984-09-01


    Size :

    1716936 byte




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



    GNSS Receiver Tracking Loop Optimization for Combined Phase, Frequency and Delay Locked Loops

    Jee, G.-I. / Deutsche Gesellschaft fur Ortung und Navigation / European Group of Institutes of Navigation | British Library Conference Proceedings | 2005




    Interferences in Phase-Locked Loops

    Blanchard, A. | IEEE | 1974