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Low angle direction of arrival estimation by time reversal
2017 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2017In a low angle target parameter estimation scenario, the backscattered signals from targets are distorted by clutter and multipath, which degrades the performance of direction-of-arrival (DOA) estimator significantly. This paper presents a novel method using time reversal (TR) technique and coherent signal-subspace method (CSM) for DOA estimation in a ...
Xiaolu Zeng +3 more
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Online angle of arrival estimation in the presence of mutual coupling
2016 IEEE Statistical Signal Processing Workshop (SSP), 2016A novel algorithm for estimating the Angles of Arrival (AoA) of multiple sources in the presence of mutual coupling is derived. We first formulate an “Equality Constrained Quadratic Optimisation” problem, then derive a suitable MUSIC-like algorithm to solve the aforementioned problem, and thus obtain good estimates of the AoA parameters ...
Ahmad Bazzi +2 more
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Indoor Angle of Arrival positioning using biased estimation
2009 7th IEEE International Conference on Industrial Informatics, 2009We 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, Wei Liu, Dan Hong Zhang
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Enhancement of angle of arrival estimation by sparse deconvolution algorithm
2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC), 2013Ray tracing is a technique often used to model indoor and outdoor environments. In order to improve the parameters used in ray tracing, measurements from channel sounding can be employed to test algorithms and build more accurate models of the channel.
Yang, Yi +2 more
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Angle of arrival estimation without EVD for coherent sources
2008 International Conference on Telecommunications, 2008A novel method is introduced in this paper that estimates direction of arrival (DOA) utilizing coherent and noncoherent signals that are impinging on an array of antenna elements in multipath environment. This algorithm presents several advantages over the classical subspace algorithms such as root MUSIC and ESPRIT with forward/backward spatial ...
Amjad Salameh, Jonathan Bagby
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Radar Angle-of-Arrival Estimation
2013The paper focus on interferometer angle error and on the signal processing required for interferometry, but also introduce monopulse angle-of-arrival for comparison. This chapter, derive the basic equations for monopulse angle estimation and discuss the fundamentals of eigen-based superresolution techniques.
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Refractivity estimations from an angle-of-arrival spectrum
Chinese Physics B, 2011This paper addresses the probability of atmospheric refractivity estimation by using field measurements at an array of radio receivers in terms of angle-of-arrival spectrum. Angle-of-arrival spectrum information is simulated by the ray optics model and refractivity is expressed in the presence of an ideal tri-linear profile.
Xiao-Feng Zhao, Si-Xun Huang
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Error estimation in angle of arrival in smart antenna
2011 International Conference on Information and Communication Technologies, 2011Rapidly 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 +4 more
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New and Less Complex Approach to Estimate Angles of Arrival
2017Accurate angle/direction of arrival (AOA/DOA) estimation is an important issue which, helps mobile communications, wireless positioning and signal processing systems to improve their performance significantly. This paper proposes a new method to estimate the direction of arrival of signals. The proposed estimator is dependent on applying the eigenvalue
Mohammed A. G. Al-Sadoon +6 more
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Cluster Angle-of-Arrival Estimation for UWB Indoor System
IEICE Transactions on Communications, 2005In this study, the new signal model suitable for ultrawide band (UWB) indoor environments with random angle spread is proposed to estimate the angle-of-arrivals (AOAs) of clusters in a UWB wireless communication. The subspace based estimation technique adopted for this model is investigated and the estimates of the AOA and distribution parameter on the
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