DoA and Polarization Estimation for Arbitrary Array Configurations

Costa, Mário; Richter, Andreas; Koivunen, Visa

doi:10.1109/tsp.2012.2187519

Cited by 77 publications

(45 citation statements)

References 40 publications

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“…Dr. Ferrara and Parks of Stanford University in the USA used a polarized sensitive array composed of crossed dipole and combined with classical super resolution algorithms to study DOA [11]. Dr. Jian Li of the USA studied the polarization state parameters and the estimation of the DOA of electromagnetic waves in the case of polarized sensitive arrays based on uniform linear array [12]. In the literature [13], the polarization state parameters and DOA estimation in the case of polarized sensitive arrays based on rectangular arrays are studied.…”

Section: Introductionmentioning

confidence: 99%

Spatial polarimetric time-frequency distribution based DOA estimation: combining ESPRIT with MUSIC

Liu

et al. 2018

J Wireless Com Network

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Spatial spectrum estimation technology has always been the focused research project in an array signal processing of High Frequency Surface Wave Radar (HFSWR). This paper takes the polarization sensitive array for the model and combines with time-frequency analysis method for DOA estimation of HFSWR echo signals, which can make full use of the spatial, time-frequency, and polarized domain information of signals. The time-frequency MUSIC and ESPRIT algorithms of integrated polarization information are studied, and the improved algorithm is proposed based on the advantages and disadvantages of both algorithms. The improved algorithm first estimates the azimuth angles of signals roughly with the polarized time-frequency ESPRIT algorithm and then determines a small scope centered on each azimuth. Within the scope, a more accurate DOA-estimated value is got by spectral peak search with MUSIC algorithm, so it can save computation time on the basis of accuracy of the DOA estimation, and their performance is analyzed by computer simulations.

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Section: Introductionmentioning

confidence: 99%

Spatial polarimetric time-frequency distribution based DOA estimation: combining ESPRIT with MUSIC

Liu

et al. 2018

J Wireless Com Network

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“…In [11], a method that can reduces the computation time by using a ratio of amplitudes is proposed. In [12], a high-resolution algorithm for estimating the DOA and polarization using real-world arrays with imperfections is proposed. Based on this array, a novel polarization MUSIC algorithm that uses information on the amplitude of the impinging source is proposed.…”

Section: Introductionmentioning

confidence: 99%

Joint Doa and Polarization Estimation Using a Uca of Single-Polarized Antennas

Dong¹,

Diao²,

Guo³

2017

PIER M

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Abstract-In this paper, the direction of arrival (DOA) and polarization parameters are estimated by a uniform circular array (UCA) with several single-polarized sensors. An efficient and improved polarization MUSIC algorithm for estimating the DOA and polarization parameters is presented. This method uses information on the amplitude to reduce the computational complexity. When the source is linearly polarized, the proposed algorithm is more accurate at a low signal-to-noise ratio (SNR). Monte Carlo simulations verify the efficacy of the proposed method.

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“…Among these initial proposals, circular array provides a unique property of ability to cover azimuth angle in a uniform manner. In general, the computational complexity of DOA estimation is significantly affected by the array geometry due to the increase in the dimensionality of two-dimensional DOA estimation problem [11]. Therefore, vast efforts have been emerged to reduce the computational complexity as well as to simplify the estimation algorithm.…”

Section: Introductionmentioning

confidence: 99%

Azimuth DOA Estimation in Y-bend Antenna Array

Sanudin

2016

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. In smart antenna system, it is extremely crucial to estimate the direction of incoming signals in order to achieve better reception. Reliability of DOA estimation depends on several factors such as the choice of DOA algorithm, size of antenna array as well as array geometry. Therefore, it is particularly desirable to have a configuration of antenna array that could produce an accurate azimuth estimation. In this work, a new planar array is proposed to address the problem of azimuth estimation. This is achieved by having a flexible element position on the xy plane that improves the steering vector, hence significantly enhances the accuracy of DOA estimation. Besides, a fair distribution of the antenna elements on the x-y plane also helps to eliminates estimation failure in the azimuth range between 240° and 360°. A comparison study between the proposed array and V-shape array is performed in order to gauge the performance of the proposed array in DOA estimation. Simulation results show that the proposed array has acquired better estimation resolution than V-shape array. On top of that, the proposed array has reduced estimation error in V-shape array. It is concluded that the proposed array has shown potential as an excellent choice of antenna array geometry for smart antenna system. IntroductionDirection of arrival (DOA) estimation for smart antenna system has been investigated extensively in the last six decades and has been applied in various fields including wireless communication, radar, sonar and audio processing [1][2][3][4]. The role of DOA estimation in smart antenna system is essential since it helps to estimate the direction of the incoming signal. The estimated signal direction will be used to point the array beam towards the estimated direction. There are several factors that contribute to the performance of DOA estimation such as the number of element in the array, spacing between elements, size of the array and shape of array [5]. Linear array provides a simple form of antenna array, and it also straightforward to be analysed. However, its capability is limited to one-dimensional DOA estimation, which is only for elevation angle estimation. In order to have both azimuth and elevation angles estimation, a two-dimensional array is needed. Thus, there are several initial configuration of planar arrays have been proposed in the literature such rectangular, triangular and circular arrays [6][7][8][9][10]. Among these initial proposals, circular array provides a unique property of ability to cover azimuth angle in a uniform manner. In general, the computational complexity of DOA estimation is significantly affected by the array geometry due to the increase in the dimensionality of two-dimensional DOA estimation problem [11]. Therefore, vast efforts have been emerged to reduce the computational complexity as well as to simplify the estimation algorithm.

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DoA and Polarization Estimation for Arbitrary Array Configurations

Cited by 77 publications

References 40 publications

Spatial polarimetric time-frequency distribution based DOA estimation: combining ESPRIT with MUSIC

Spatial polarimetric time-frequency distribution based DOA estimation: combining ESPRIT with MUSIC

Joint Doa and Polarization Estimation Using a Uca of Single-Polarized Antennas

Azimuth DOA Estimation in Y-bend Antenna Array

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