TITLE

A Channelization-Based DOA Estimation Method for Wideband Signals

AUTHOR(S)
Rui Guo; Yue Zhang; Qianqiang Lin; Zengping Chen
PUB. DATE
July 2016
SOURCE
Sensors (14248220);Jul2016, Vol. 16 Issue 7, p1031
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
In this paper, we propose a novel direction of arrival (DOA) estimation method for wideband signals with sensor arrays. The proposed method splits the wideband array output into multiple frequency sub-channels and estimates the signal parameters using a digital channelization receiver. Based on the output sub-channels, a channelization-based incoherent signal subspace method (Channelization-ISM) and a channelization-based test of orthogonality of projected subspaces method (Channelization-TOPS) are proposed. Channelization-ISM applies narrowband signal subspace methods on each sub-channel independently. Then the arithmetic mean or geometric mean of the estimated DOAs from each sub-channel gives the final result. Channelization-TOPS measures the orthogonality between the signal and the noise subspaces of the output sub-channels to estimate DOAs. The proposed channelization-based method isolates signals in different bandwidths reasonably and improves the output SNR. It outperforms the conventional ISM and TOPS methods on estimation accuracy and dynamic range, especially in real environments. Besides, the parallel processing architecture makes it easy to implement on hardware. A wideband digital array radar (DAR) using direct wideband radio frequency (RF) digitization is presented. Experiments carried out in a microwave anechoic chamber with the wideband DAR are presented to demonstrate the performance. The results verify the effectiveness of the proposed method.
ACCESSION #
120513770

 

Related Articles

  • DOA estimation of OFDM signal based on sparse representation. WANG Zhi-chao; ZHANG Tian-qi; WAN Yi-long; ZHU Hong-bo // Application Research of Computers / Jisuanji Yingyong Yanjiu;Dec2013, Vol. 30 Issue 12, p3716 

    In order to solve the problem of the OFDM broadband signal processing, this paper introduced a algorithm for the direction of arrival (DOA) estimation of OFDM signal based on the wideband signal covariance matrix sparse representation. It averaged the triangle elements in the lower left corner...

  • Performance Analysis of Multiple Wideband Sources Localization for Arbitrary Array. XUE Xian-ling; LIU Qing-hua; HE Ning // Journal of Signal Processing;Oct2014, Vol. 30 Issue 10, p1220 

    Aimed at the feature of wideband signals which were non-stationary and the number of source is known for the common wideband DOA (Direction-of-Arrival) estimation algorithm, a new DOA estimation algorithm of non-stationary signals for spatial arbitrary array was proposed. Firstly, we turn the...

  • Direction of Arrival Estimation of Multiple UWB Signals. Mani, V. V.; Bose, R. // Wireless Personal Communications;Mar2011, Vol. 57 Issue 2, p277 

    This paper deals with the problem of estimation of direction of arrivals (DOA) of a multiple ultra-wideband (UWB) pulse postion modulation signals incident on a smart antenna in the presence of white Gaussian noise. We transform the received signal into frequency domain in order to split the...

  • Wideband DOA Estimation Method Based on Khatri-Rao Subspace with Uniform Focusing. Jin Zhang; Shiyou Qi; Aixia Yong // Applied Mechanics & Materials;2014, Vol. 687-691, p4064 

    A new wideband DOA estimation method based on Khatri-Rao subspace using uniform focusing is presented in this paper. Due to using the uniform focusing matrix which does not require pre-estimating the DOAs of signals in advance, its resolution is improved obviously and its computation complexity...

  • THE ANALYSIS OF THE INFLUENCE OF RANDOM ARRAY ERROR TO WIDEBAND SIGNAL DOA ESTIMATION REITERATIVE ALGORITHM. Zhang, F.; Chen, K.-S.; Tang, B.; Wu, H. // Progress in Electromagnetics Research C;Oct2012, Vol. 31, p97 

    This paper proposed a new approach, which is based on minimum mean-square error (MMSE) criterion, for wideband signal spatial direction-of-arrival (DOA) estimation when there is array error, and the impact of random array error to the new algorithm is analyzed in this paper. Pass the wideband...

  • A novel method of Parameter Estimation in Wideband Bistatic MIMO Radar System. Li Li // Applied Mechanics & Materials;2014, Issue 556-562, p5038 

    This paper proposes a new wideband signal model and a novel method in wideband bistatic MIMO radar system. Firstly, a new signal array model is proposed. Secondly, Doppler stretch and time delay are jointly estimated by searching the optimal rotation angle to meet concentrated-energy of the...

  • Covariance-Based Direction-of-Arrival Estimation of Wideband Coherent Chirp Signals via Sparse Representation. Zhichao Sha; Zhengmeng Liu; Zhitao Huang; Yiyu Zhou // Sensors (14248220);Sep2013, Vol. 13 Issue 9, p11490 

    This paper addresses the problem of direction-of-arrival (DOA) estimation of multiple wideband coherent chirp signals, and a new method is proposed. The new method is based on signal component analysis of the array output covariance, instead of the complicated time-frequency analysis used in...

  • Joint Estimation of TOA and DOA in IR-UWB System Using Sparse Representation Framework. Fangqiu Wang; Xiaofei Zhang // ETRI Journal;Jun2014, Vol. 36 Issue 3, p460 

    This paper addresses the problem of joint time of arrival (TOA) and direction of arrival (DOA) estimation in impulse radio ultra-wideband systems with a two-antenna receiver and links the joint estimation of TOA and DOA to the sparse representation framework. Exploiting this link, an orthogonal...

  • Applying Singular Value Decomposition Perturbation to Wideband Signal Direction-of-Arrival Estimation. Zhang Mingxin; Ruan Wenhui; Zhou Yatong; Junyi Shen; Zhu Yaling // Information Technology Journal;2008, Vol. 7 Issue 7, p1077 

    This study proposes a novel algorithm for wideband signal directions-of-arrival (DOA) estimation based on the Singular Value Decomposition (SVD) perturbation. In out algorithm, the SVD perturbation of focusing matrix is derived and the range of the perturbation parameter is also given. Compared...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics