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, so avoiding spectrum aliasing in the Doppler domain. For the range compression, the deramping technique, commonly used with linear SFCW, is extended to the case 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 languageEnglish
Title of host publicationProceedings - 2006 International Waveform Diversity and Design Conference, WDD 2006
Place of PublicationPiscataway, NJ
Number of pages8
ISBN (Electronic)978-1-5386-4848-3
Publication statusPublished - 2018
Event2nd International Waveform Diversity and Design Conference, WDD 2006 - Lihue, United States
Duration: 22 Jan 200627 Jan 2006


Conference2nd International Waveform Diversity and Design Conference, WDD 2006
CountryUnited States

    Research areas

  • Frequency modulation, Synthetic aperture radar, Doppler effect, Delay effects, Radar imaging

ID: 46749672