IDEAS home Printed from https://ideas.repec.org/a/hin/jnlmpe/3084516.html
   My bibliography  Save this article

Novel Diagonal Reloading Based Direction of Arrival Estimation in Unknown Non-Uniform Noise

Author

Listed:
  • Hao Zhou
  • Guoping Hu
  • Junpeng Shi
  • Ziang Feng

Abstract

Nested array can expand the degrees of freedom (DOF) from difference coarray perspective, but suffering from the performance degradation of direction of arrival (DOA) estimation in unknown non-uniform noise. In this paper, a novel diagonal reloading (DR) based DOA estimation algorithm is proposed using a recently developed nested MIMO array. The elements in the main diagonal of the sample covariance matrix are eliminated; next the smallest MN - K eigenvalues of the revised matrix are obtained and averaged to estimate the sum value of the signal power. Further the estimated sum value is filled into the main diagonal of the revised matrix for estimating the signal covariance matrix. In this case, the negative effect of noise is eliminated without losing the useful information of the signal matrix. Besides, the degrees of freedom are expanded obviously, resulting in the performance improvement. Several simulations are conducted to demonstrate the effectiveness of the proposed algorithm.

Suggested Citation

  • Hao Zhou & Guoping Hu & Junpeng Shi & Ziang Feng, 2018. "Novel Diagonal Reloading Based Direction of Arrival Estimation in Unknown Non-Uniform Noise," Mathematical Problems in Engineering, Hindawi, vol. 2018, pages 1-9, May.
    • Handle: RePEc:hin:jnlmpe:3084516
    DOI: 10.1155/2018/3084516
    as

    Download full text from publisher

    File URL: http://downloads.hindawi.com/journals/MPE/2018/3084516.pdf
    Download Restriction: no
    File URL: http://downloads.hindawi.com/journals/MPE/2018/3084516.xml
    Download Restriction: no
    File URL: https://libkey.io/10.1155/2018/3084516?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    More about this item

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:hin:jnlmpe:3084516. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Mohamed Abdelhakeem (email available below). General contact details of provider: https://www.hindawi.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.