NDLI: Coprime beamforming: fast estimation of more sources than sensors

Content Provider	IET Digital Library
Author	Baxter, William Nosrati, Hamed Aboutanios, Elias
Abstract	In radar, the minimisation of redundancies within the sensing array can lead to significant hardware computational savings. Arrays with a coprime-pair configuration enjoy increased degrees of freedom and can detect more sources than sensors. To achieve this, a virtual array (VA) consisting of the full complement of lags is usually constructed and subspace-based algorithms are then employed to obtain the direction-of-arrival (DOA) or frequency estimates. However, the application of the subspace techniques to the VA incurs a significant computational cost and requires spatial smoothing. The authors propose and analyse the application of the fast iterative interpolated beamformer (FIIB) to the coprime DOA estimation problem. The FIIB enjoys a computational complexity of the same order as the fast Fourier transform and does not require spatial smoothing. They consider two implementations that construct the VA differently with the first selecting a single estimate for each lag and the other employing averaged values of the lag estimates. They present a comprehensive study of the estimation performance as a function of signal-to-noise ratio, number of snapshots and source separation. The results clearly show that the FIIB delivers high-fidelity frequency estimates that consistently outperform the high-resolution subspace-based methods.
Starting Page	1956
Ending Page	1962
Page Count	7
ISSN	17518784
Volume Number	13
e-ISSN	17518792
Issue Number	Issue 11, Nov (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-rsn/13/11
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-rsn.2018.5647
Journal	IET Radar, Sonar & Navigation
Publisher Date	2019-07-02
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Array Signal Processing Computational Complexity Computational Cost Coprime Beamforming Coprime-pair Configuration Degree of Freedom Direction of Arrival Estimation DOA Estimation Performance Fast Estimation Fast Fourier Transform Fast Iterative Interpolated Beamformer FIIB High-fidelity Frequency Estimate High-resolution SubSpace-based Method Integral Transforms in Numerical Analysis Interpolation Interpolation And Function Approximation Iterative Method Lag Estimate Numerical Analysis Sensing Array Signal Processing And Detection Signal Processing Theory Significant Hardware Computational Savings Single Estimate Source Separation Spatial Smoothing SubSpace Technique SubSpace-based Algorithm VA Virtual Array
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

2-D DOA Estimation Using Off-Grid Sparse Learning via Iterative Minimization with L-Parallel Coprime Array

Bi-level JOMP for DOA estimation in coprime array with off-grid targets

Fast and convenient implementation of iterative eigenspace-based beamforming

Virtual array interpolation for coprime arrays: a signal reconstruction perspective

Partial spectral search-based DOA estimation method for co-prime linear arrays

DOA estimation for different frequency with different angles based on wideband co-prime array

Wideband signal DOA estimation method based on keystone transform

DOA estimation under the existence of multiple groups of coherent signals with ULA

Direction-of-arrival estimation method based on least-squares by reconstructing covariance matrix with automatic diagonal loading

Coprime beamforming: fast estimation of more sources than sensors

Similar Documents

2-D DOA Estimation Using Off-Grid Sparse Learning via Iterative Minimization with L-Parallel Coprime Array

Bi-level JOMP for DOA estimation in coprime array with off-grid targets

Fast and convenient implementation of iterative eigenspace-based beamforming

Virtual array interpolation for coprime arrays: a signal reconstruction perspective

Partial spectral search-based DOA estimation method for co-prime linear arrays

DOA estimation for different frequency with different angles based on wideband co-prime array

Wideband signal DOA estimation method based on keystone transform

DOA estimation under the existence of multiple groups of coherent signals with ULA

Direction-of-arrival estimation method based on least-squares by reconstructing covariance matrix with automatic diagonal loading

Coprime beamforming: fast estimation of more sources than sensors