Hole Locations and a Filling Method for Coprime Planar Arrays for DOA Estimation
نویسندگان
چکیده
Coprime linear arrays (CLAs) have drawn lots of attention. Efforts been made to reveal the hole locations in difference coarrays CLAs, based on which many methods proposed fill holes, lengthening consecutive coarray part and increasing effective degrees freedom (DOFs). Compared with two dimensional (2D) coprime planar (CPAs) are more relevant real applications. However, no closed-form expressions for a CPA found open literature, advantage terms DOFs CPAs has not well explored. In this letter, structure is investigated exact all positions provided. Then, holes-filling method proposed, by most critical holes can be filled such that lags as higher obtained.
منابع مشابه
A search-free DOA estimation algorithm for coprime arrays
In this paper, we propose a fast search-free method for direction-of-arrival (DOA) estimation with coprime arrays. A coprime array consists of two uniform linear subarrays with inter-element spacings Mλ/2 and Nλ/2, where M and N are coprime integers and λ is the wavelength of the signal. Because uniform linear arrays enjoy many processing advantages over arbitrary geometry arrays, our strategy ...
متن کاملDOA Estimation Exploiting Coprime Frequencies
Coprime array, which utilizes a coprime pair of uniform linear subarrays, is an attractive structure to achieve sparse array configurations. Alternatively, effective coprime array configurations can be implemented using a uniform linear array with two coprime sensing frequencies. This enables the integration of the coprime array and filter concepts to achieve high capabilities in meeting system...
متن کاملDOA Estimation Based on Real-Valued Cross Correlation Matrix of Coprime Arrays
A fast direction of arrival (DOA) estimation method using a real-valued cross-correlation matrix (CCM) of coprime subarrays is proposed. Firstly, real-valued CCM with extended aperture is constructed to obtain the signal subspaces corresponding to the two subarrays. By analysing the relationship between the two subspaces, DOA estimations from the two subarrays are simultaneously obtained with a...
متن کاملDOA Estimation of Coherent Signals on Coprime Arrays Exploiting Fourth-Order Cumulants
This paper considers the problem of direction-of-arrival (DOA) estimation of coherent signals on passive coprime arrays, where we resort to the fourth-order cumulants of the received signal to explore more information. A fourth-order cumulant matrix (FCM) is introduced for the coprime array. The special structure of the FCM is combined with the array configuration to resolve the coherent signal...
متن کاملDOA estimation with hexagonal arrays
Hexagonal arrays are widely used in practice but have received less attention in the optimum array processing literature. In this paper, we show how unitary ESPRIT can be applied to hexagonal arrays for direction-of-arrival (DOA) estimation. The resulting estimates exhibit good threshold behavior, and are close to the Cramer-Rao bound above threshold. We also show how to use spatial smoothing i...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: IEEE Communications Letters
سال: 2021
ISSN: ['1558-2558', '1089-7798', '2373-7891']
DOI: https://doi.org/10.1109/lcomm.2020.3022455