Converting a 3D surface into a set of directional scatterers for high-resolution radar response simulation

Henna Perälä, Minna Väilä, Juha Jylhä, Ilkka Venäläinen, Ari Visa

    Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

    3 Citations (Scopus)

    Abstract

    It is practical and efficient to simplify targets to point scatterers in radar simulations. With low-resolution radars, the radar cross section (RCS) is a sufficient feature to characterize the scattering properties of a target. However, the RCS totals the target scattering properties to a scalar value for each aspect angle. Thus, a more detailed representation of the target is required with high-resolution radar techniques, such as Inverse Synthetic-Aperture Radar (ISAR). In straightforward simulation scenarios, high-resolution targets have been modeled placing identical point scatterers in the shape of the target, or with a few dominant point scatterers. As extremely simple arrangements, these do not take the self-shadowing into account and are not realistic enough for high demands.

    Our radar response simulation studies required a target characterization akin to RCS, which would also function in high-resolution cases and take the self-shadowing and multiple reflections into account. Thus, we propose an approach to converting a 3-dimensional (3D) surface into a set of scatterers with locations, orientations, and directional scattering properties. The method is intended for far field operation, but could be adjusted for use in the near field. It is based on ray tracing which provides the self-shadowing and reflections naturally. In this paper, we present ISAR simulation results employing the proposed method. The constructed scatterer set is scalable for different wavelengths enabling the fast production of realistic simulations including authentic RCS scattering center formation. This paper contributes to enhancing the reality of the simulations, yet keeping them manageable and computationally reasonable.
    Translated title of the contributionConverting a 3D surface into a set of directional scatterers for high-resolution radar response simulation
    Original languageEnglish
    Title of host publicationOptics and Photonics for Information Processing V, Optics and Photonics 2011: Image and Signal Processing, 21-25, August, 2011, San Diego, California, USA. Porceedings of SPIE
    EditorsKhan M. Iftekharuddin, Abdul Ahad Sami Awwal
    Place of PublicationBellingham, WA
    PublisherSPIE
    Number of pages9
    ISBN (Print)9780819487445
    DOIs
    Publication statusPublished - 2011
    Publication typeA4 Article in a conference publication
    EventSPIE CONFERENCE PROCEEDINGS -
    Duration: 1 Jan 1900 → …

    Publication series

    NameOptics and Photonics for Information Processing, Optics and Photonics Conference
    PublisherSPIE
    Volume8134
    ISSN (Print)0277-786X

    Conference

    ConferenceSPIE CONFERENCE PROCEEDINGS
    Period1/01/00 → …

    Publication forum classification

    • No publication forum level

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