A novel sparse array geometry embedding two sizes of spatial invariances is presented for use with a new ESPRIT-based (estimation of signal parameters via rotational invariance techniques) algorithm for aperture extension. The half-wavelength invariance yields unambiguous but high-variance direction cosine estimates to disambiguate low-variance but cyclically ambiguous estimates from the larger invariance. With larger invariance at 60 half-wavelengths, resolution threshold for two closely spaced emitters is reduced by 50 dB and estimation error by 100-fold. Array design formulas are also presented.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Direction-finding with sparse rectangular dual-size spatial invariance array


    Contributors:


    Publication date :

    1998-10-01


    Size :

    1662843 byte




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Multilinear direction finding for sensor-array with multiple scales of invariance

    Miron, Sebastian / Yang Song / Brie, David et al. | IEEE | 2015


    A Practical Diophantine Approximation for Sparse Linear Array Direction Finding

    Sirianunpiboon, Songsri / Ly, Peter Q. C. / Elton, Stephen D. | IEEE | 2021


    Direction Finding With Sparse Subarrays: Design, Algorithms, and Analysis

    Leite, Wesley S. / Lamare, Rodrigo C. de / Zakharov, Yuriy et al. | IEEE | 2024