Results 251 to 260 of about 109,340 (287)

Indoor Angle of Arrival positioning using biased estimation

2009 7th IEEE International Conference on Industrial Informatics, 2009
We consider the problem of estimating the position of an indoor wireless transmitter. Based on Angle of Arrival (AOA) readings from several base stations, a wireless transmitter's position has traditionally been determined using a least-squares approach. In particular, care is taken to ensure that the least-squares estimator is unbiased.
Bertrand Tay, null Wei Liu, Dan Hong Zhang   +2 more
openaire   +1 more source

Angle of Arrival Estimation for Saturated Acoustic Signals

2013
Abstract : The U.S. Army Research Laboratory (ARL) has developed a tetrahedral microphone array system for acoustic-based target detection and localization. Time-domain data can be used to obtain differential time of arrival (DTOA) and angle of arrival (AOA) estimates. Use of multiple arrays allows for triangulation.
Geoffery H. Goldman, Brandon K. Au, Ananth V. Sridhar   +2 more
openaire   +1 more source

Angle of arrival estimation based on interferometer principle

IEEE International Symposium on Intelligent Signal Processing, 2003, 2004
The angle of arrival estimation problem based on interferometer principle has great accuracy in the angle of arrival estimation. To increase the accuracy there are two main ways. In the first one we add more antennas to the configuration, hence we get more measurement data, but it means that the physical configuration has to be changed.
L. Balogh, I. Kollar
openaire   +1 more source

An alternative approach for angle of arrival estimation

The 8th European Conference on Antennas and Propagation (EuCAP 2014), 2014
The Multiple Signals Classification (MUSIC) algorithm is the most popular algorithm for estimating the Angle of Arrival (AOA) of the received signals. This algorithm is based on the calculation of thermal noise Eigenvalues and the corresponding Eigen vectors. All researches in this field assumed isotropic sensors to form the array antennas.
Bassim Sayed Mohammed, Noori Hussein Noori   +1 more
openaire   +1 more source

Angle-of-arrival estimation: Beamformer-based smart antennas

2008 3rd IEEE Conference on Industrial Electronics and Applications, 2008
In this paper, we addressed the issue of estimating the angle-of-arrival using the beamformer-based smart antennas. In general wireless communication system, it was apparent that even for one source there are many possible propagation paths and angles of arrival. If several transmitters are operating simultaneously, each source potentially creates many
openaire   +1 more source

Angle of arrival estimation using MIMO array antenna

2013 MTS/IEEE OCEANS - Bergen, 2013
Multiple-input multiple-output (MIMO) radar has received increasing attention in recent years. MIMO radar has many advantages over conventional phased array radar such as target detection, resolution enhancement, and interference and jamming suppression.
Andrew Im, Daniel Kerr, null Hung Lu, Solomon Wu, Zekeriya Aliyazicioglu, H. K. Hwang   +5 more
openaire   +1 more source

Estimating the Angles of Arrival of Multiple Plane Waves

IEEE Transactions on Aerospace and Electronic Systems, 1983
The problem of estimating the angles of arrival of M plane waves incident simultaneously on a line array with L + 1 (L?M) sensors utilizing the special eigenstructure of the covariance matrix C of the signal plus noise at the output of the array is addressed. A polynomial D(z) with special properties is constructed from the eigenvectors of C, the zeros
Kumaresan, Ramdas, Tufts, Donald W.
openaire   +2 more sources

Estimation of angles of arrivals of multiple wideband sources

Antennas and Propagation Society Symposium 1991 Digest, 2002
The authors have developed a data transformation matrix for the estimation of directions of arrival for multiple wideband sources when prior information about the source locations is not available. The proposed focusing matrix minimizes the average of the squared norm of focusing error over the angles of interest without prior knowledge of source ...
W. Hong, A.H. Tewfik
openaire   +1 more source

Error estimation in angle of arrival in smart antenna

2011 International Conference on Information and Communication Technologies, 2011
Rapidly growing demand in mobile communication system required technology which will provide minimum errors and maximize SNR in a particular angle/direction. Smart antenna has a system for directed a beam towards desired angle/direction and suppress/cancel interference from undesired angle/direction.
Sangita Lalchand, Muhammad Mazhar Manzoor, Amir Ijaz, Imran Ahmed Awan, Asad Ali Siddique   +4 more
openaire   +1 more source

Real Time Angle of Arrival Estimation for GSM Signals

IEEE/ACES International Conference on Wireless Communications and Applied Computational Electromagnetics, 2005., 2005
An FPGA design was created to estimate the angles of arrival for GSM wireless signals in real time. Signals are received using a four element uniform linear array. A wideband IF is undersampled and individual RF channels are tuned digitally. Initially the Blackman-Tukey approach was considered, but ultimately a less complex approach was chosen since it
P.S. Wyckoff, J.T. Keeler
openaire   +1 more source