Results 241 to 250 of about 166,061,941 (270)
Some of the next articles are maybe not open access.
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
openaire +1 more source
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.
openaire +1 more source
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
openaire +2 more sources
Angle of arrival estimation using spectral interferometry
Journal of Luminescence, 2010We have developed a correlative signal processing concept based on a Mach-Zehnder interferometer and spatial-spectral (S2) materials that enables direct mapping of RF spectral phase as well as power spectral recording. This configuration can be used for precise frequency resolved time delay estimation between signals received by a phased antenna array ...
Z.W. Barber +4 more
openaire +1 more source
Estimating angles of arrivals in the presence of mutual coupling
1987 Antennas and Propagation Society International Symposium, 2005In this paper, we examine the eigenstructure of the covariance matrix of an antenna array under mutual coupling and show that its distortion can be properly compensated by using a modified search vector in performing estimations. Computer simulation results are presented. They validate our analysis. FORMULATION Let us consider the problem of estimating
null Chien-Chung Yeh, null Maw-Lin Leou
openaire +1 more source
Angle of Arrival Estimation for Non-Circular Signals
2006 IEEE Sarnoff Symposium, 2006A new algorithm is introduced in this paper that estimates one dimension direction of arrivals utilizing coherent and noncoherent non-circular sources. Examples of such sources are binary shift keying (BPSK) and M-ary amplitude shift keying (MASK). This algorithm presents several advantages over the classical subspace algorithms such as Root MUSIC and ...
Amjad Salameh, Nizar Tayem
openaire +1 more source
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
openaire +2 more sources
Angle of Arrival Estimation for Saturated Acoustic Signals
2013Abstract : 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 +2 more
openaire +1 more source
Angle of Arrival Estimation in the Presence of Phase Difference Ambiguities
2022 IEEE 12th International Conference on Indoor Positioning and Indoor Navigation (IPIN), 2022Marcel Müller, Christof Röhrig
openaire +1 more source
Quantum-enhanced angle-of-arrival pre-estimation of radio-frequency signals
Optics and Laser Technology, 2023Yaohui Zheng, Tian Long, Yajun Wang
exaly