Linear frequency modulated (FM), or chirp, pulse compression is a widely used technique for improving the range resolution of radar systems, although it often places quite stringent demands on FM sweep linearity. This paper examines the impact of sweep nonlinearities on the performance of frequency modulated continuous wave (FMCW) radar systems, particularly those employing simple voltage-controlled oscillator (VCO) sources, using a new and straightforward approach based on the fractional slope variation (FSV). Modeled results are presented, assuming a square-law source nonlinearity representation, showing the effect of such nonlinearities on point-target response and range resolution. These results are then related to the standard definition of linearity. Measurements from a commercial VCO are finally used to convincingly validate the work, resulting in a simple and practical method to predict the impact of source nonlinearity, as defined by the FSV parameter, on the performance of an FMCW radar system.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Determination of Sweep Linearity Requirements in FMCW Radar Systems Based on Simple Voltage-Controlled Oscillator Sources


    Contributors:
    Brennan, P. V. (author) / Huang, Y. (author) / Ash, M. (author) / Chetty, K. (author)


    Publication date :

    2011-07-01


    Size :

    2242500 byte




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



    FMCW RADAR SYSTEM

    MITSUMOTO MASA / HIRATA KAZUFUMI | European Patent Office | 2015

    Free access

    Phase Noise in FMCW Radar Systems

    Siddiq, Kashif / Hobden, Mervyn K. / Pennock, Steve R. et al. | IEEE | 2019


    FMCW APPARATUS AND METHOD FOR CONTROLLING VEHICLE BASED ON FMCW RADAR

    HEO OH CHEOL | European Patent Office | 2019

    Free access

    Linear FMCW radar techniques

    Stove, A.G. | Tema Archive | 1992


    FMCW Ground Probing Radar

    Jackson, E. / Bredow, J. / Electromagnetics Academy et al. | British Library Conference Proceedings | 1993