Moving target indication enhancement in fmcw sar using deramped randmonized stepped-frequency signals

A Meta, P Hoogeboom, LP Ligthart

    Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

    Abstract

    A new technique to enhance the indication of moving targets is proposed, which makes use of randomized Stepped Frequency Continuous Wave (SFCW) modulations, where the frequency order is changed from pulse to pulse. This kind of signals gives the possibility to discriminate target responses whose Doppler spectrum is folded back into the clutter region. The discrimination is performed directly during the range compression, the deramping technique, commonly used with linear SFCW, is extended to the cased of non linear stepped modulations. In this way, the sampling constraints can be relaxed also when using randomized SFCW signals, allowing the same sampling frequency as with deramped linear SFCW, and reducing therefore the system complexity. Compared to linear modulations, randomized SFCW signals give also the advantage to suppress range ambiguities and therefore the capability to look at further range.
    Original languageUndefined/Unknown
    Title of host publicationProceedings of the 2006 International Waveform Diversity and Design Conference
    Editors s.n.
    Place of PublicationPiscataway
    PublisherIEEE Society
    Pages1-8
    Number of pages8
    Publication statusPublished - 2006
    Event2006 International Waveform Diversity and Design Conference, Lihue, Hawaii, USA - Piscataway
    Duration: 22 Jan 200627 Jan 2006

    Publication series

    Name
    PublisherIEEE

    Conference

    Conference2006 International Waveform Diversity and Design Conference, Lihue, Hawaii, USA
    Period22/01/0627/01/06

    Keywords

    • conference contrib. refereed
    • Conf.proc. > 3 pag

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