Results 151 to 160 of about 19,617 (205)

Precision of direction of arrival (DOA) estimation using novel three dimensional array geometries

AEU - International Journal of Electronics and Communications, 2017
Abstract Numerous methods for direction of arrival (DOA) estimation, used in smart antennas have been already reported in previous studies. The precision of DOA estimation depends on the choice of the algorithm and the geometrical configuration of the antenna array. In this work, the performance of new geometrical configurations, i.e.
Sarah Poormohammad, Forouhar Farzaneh
openaire   +3 more sources

Direction of arrival (DOA) determination based on monopulse concepts

2000 Asia-Pacific Microwave Conference. Proceedings (Cat. No.00TH8522), 2002
Monopulse is a classical radar technique of precise finding of a source or target. The concept can be used both in radar applications as well as in modern communication techniques. The information contained in antenna sidelobes normally disturbs the determination of DOA in the case of a classical monopulse system. The suitable combination of amplitude-
W. Kederer, J. Detlefsen
openaire   +1 more source

Direction-of-arrival methods (DOA) and time difference of arrival (TDOA) position location technique

Proceedings of the Twenty-Second National Radio Science Conference, 2005. NRSC 2005., 2005
This paper provides a detailed overview of the various methods for estimation of direction-of-arrival (also called angle-of-arrival) of a radio signal using an antenna array. The array-based directional-of-arrival (DOA) estimation techniques considered here are broadly divided into two different types: conventional techniques, and subspace based ...
Mohamed Abd Elsalam Mofeed, Hohamed Abd Elsalam Mofeed   +1 more
openaire   +1 more source

Improved maximum likelihood spectrum for direction of arrival (DOA) estimation

ICASSP-88., International Conference on Acoustics, Speech, and Signal Processing, 2003
A variation of J. Capon's (1969) maximum-likelihood (ML) spectral estimation algorithm is described for calculating direction of arrival using a short linear array. The proposed modification involves altering the computed covariance spectral matrix by setting its lowest eigen value to a small, positive constant lambda '(min).
P.S. Naidu, V.V. Krishna
openaire   +1 more source

Direction of arrival (DOA) parameter estimation with the SAGE algorithm

Signal Processing, 2004
In this study, we investigate the estimation of the relative delay, the azimuth and elevation angle and the complex amplitude of a known received signal with the space alternating generalised expectation (SAGE) maximisation algorithm. This optimisation algorithm is used to replace the high-dimensional optimisation procedure, necessary to compute the ...
Jo Verhaevert, Emmanuel Van Lil, Antoine Van de Capelle   +2 more
openaire   +1 more source

Direction-of-Arrival (DOA) Estimation based on Spacetime-Modulated Metasurface

2019 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, 2019
We introduce the concept of DOA estimation based on spacetime-modulated 2D-patch-array metasurface. Such a system, compared to conventional DOA estimators, offers the key advantage of requiring only one receiving antenna, with the metasurface placed in front of it.
Xiaoyi Wang, Christophe Caloz
openaire   +1 more source

DOA(Direction of Arrival) with array antennas based on MOM

2010 IEEE Antennas and Propagation Society International Symposium, 2010
It's an important issue that estimation of signal direction for radar or communication system. And it was researched for military and commercial. Generally, it's a method that estimate to direction of signal by use each signal of array sensors. It called to DOA(Direction Of Arrival). For basically, there are Beamforming, Capon, Linear-prediction method.
null Sang-kon Mun, null Won-june Kang, null Vea-o Lee, null Chang-yul Cheon, null Yong-seek Chung   +4 more
openaire   +1 more source

Direction of Arrival (DOA) and Channel Estimation

2016
Future fit demand combined with a flexible technical solution that is by latest wireless technology stands for. Estimating of the user's location is going to be an integral system with the upcoming mobile technology. This chapter shows some techniques for estimating the direction of arrival (DOA) with mathematical elaboration and simulation results as ...
Shouman Barua, Robin Braun
openaire   +1 more source

Direction of arrival (DOA) estimation system using 3D printed Luneburg lens

2016 IEEE/ACES International Conference on Wireless Information Technology and Systems (ICWITS) and Applied Computational Electromagnetics (ACES), 2016
A novel direction of arrival (DOA) estimation system based on a broadband 3D printed Luneburg lens is reported in this paper. Using the property of a Luneburg lens that the focus point of an incident plane wave is at the opposite side on the surface of the lens, 36 diode detectors with 10 degree spacing are mounted around the surface of a 3D printed ...
Min Liang, Xiaoju Yu, Rafael Sabory-Garcia, Wei-Ren Ng, M. E. Gehm, Hao Xin   +5 more
openaire   +1 more source