Sample clock offset must be estimated in order to correctly demodulate an OFDM signal. Estimates are also required in passive radar processing, to produce a reference signal, which is properly matched to the transmission. A recently proposed clock offset estimation method for passive radar is found to be overly sensitive to measurement noise. However, the radar ambiguity surface is found to be unaffected by the specific errors engendered by this noise. The reasons for this are explored. An updated method based on state-space modeling and Kalman smoothing is proposed. This is found to restore clock offset estimation performance in cases of higher noise, achieving this with low processing latency. These improvements enable the method to be employed for other applications requiring high quality, time-critical clock offset estimation.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Improvement of a Sample Clock Offset Estimation Method Used in Passive Radar


    Contributors:


    Publication date :

    2022-08-01


    Size :

    2021705 byte




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



    Passive Radar Signal Processing in the Presence of Sample Clock Offset

    Searle, Stephen / Dogancay, Kutluyil | IEEE | 2021


    GPS-based precise satellite clock offset estimation with the GPSTk

    Zhang, Tian / Wu, Meiping / Zhang, Kaidong et al. | IEEE | 2014


    Target Kinematic State Estimation With Passive Multistatic Radar

    Ma, Hui / Antoniou, Michail / Stove, Andrew G. et al. | IEEE | 2021


    Mitigating radio emitter clock offset in detection and geolocation

    Bottomley, Gregory E. / Cairns, Douglas A. | IEEE | 2015


    Vehicle radar system with offset electronics

    BENSERIN MATTHEW / ROCHEBLAVE LAURENT / STEBRO FREDRIK | European Patent Office | 2023

    Free access