Results 11 to 20 of about 2,523,034 (280)
Source Bearing and Steering-Vector Estimation using Partially Calibrated Arrays [PDF]
IEEE Transactions on Aerospace and Electronic Systems, 2009 The problem of source direction-of-arrival (DOA) estimation using a sensor array is addressed, where some of the sensors are perfectly calibrated, while others are uncalibrated. An algorithm is proposed for estimating the source directions in addition to the estimation of unknown array parameters such as sensor gains and phases, as a way of performing ...
Li, M., Lu, Y.
core +8 more sources
Implementation of Accurate Broadband Steering Vectors for Broadband Angle of Arrival Estimation [PDF]
IET Intelligent Signal Processing Conference 2013 (ISP 2013), 2013 Motivated by accurate broadband steering vector requirements for applications such as broadband angle of arrival estimation, we review fractional delay filter designs. A common feature across these are their rapidly decreasing performance as the Nyquist rate is approached.
Alrmah, Mohamed Abubaker +2 more
core +7 more sources
Signal waveform estimation in the presence of uncertainties about the steering vector [PDF]
The Thrity-Seventh Asilomar Conference on Signals, Systems & Computers, 2003, 2004 The problem of signal waveform estimation using an array of sensors where there exist uncertainties about the steering vector of interest is presented in this paper. This problem occurs in many situations, including arrays undergoing deformations, uncalibrated arrays, scattering around the source, etc.
Olivier Besson +2 more
openaire +6 more sources
Amplitude estimation of a signal with known waveform in the presence of steering vector uncertainties [PDF]
IEEE Transactions on Signal Processing, 2005 In this correspondence, we address the problem of estimating the amplitude of a signal with known waveform received on an array of sensors and we consider the case where there exist uncertainties about the spatial signature of the signal of interest. Closed-form expressions for the Crame/spl acute/r-Rao bound are derived and the respective influence of
Olivier Besson +2 more
core +9 more sources
New convex approaches to general MVDR robust adaptive beamforming problems
Electronics Letters, 2023 Consider general minimum variance distortionless response (MVDR) robust adaptive beamforming problems based on the optimal estimation for both the desired signal steering vector and the interference‐plus‐noise covariance (INC) matrix.
Yao Zhao +5 more
doaj +1 more source
A robust generalized sidelobe canceller via steering vector estimation [PDF]
EURASIP Journal on Advances in Signal Processing, 2016 In the presence of the direction of arrival (DOA) mismatch, the performance of generalized sidelobe canceller (GSC) may suffer severe degradation due to the gain loss of the desired signal in the main array and cancellation. In this paper, one effective GSC algorithm is proposed to improve the robustness against the DOA mismatch of the desired signal ...
Xu Wang +3 more
openaire +2 more sources
Robust adaptive beamforming using a Bayesian steering vector error model [PDF]
, 2013 We propose a Bayesian approach to robust adaptive beamforming which entails considering the steering vector of interest as a random variable with some prior distribution.
Bidon, Stéphanie, Besson, Olivier
core +1 more source
Filter bank based fractional delay filter implementation for widely accurate broadband steering vectors [PDF]
, 2013 Applications such as broadband angle of arrival estimation require the implementation of accurate broadband steering vectors, which generally rely on fractional delay filter designs.
Weiss, Stephan, Alrmah, Mohamed Abubaker
core +4 more sources
Estimating Angle of Arrival (AoA) of multiple Echoes in a Steering Vector Space
CoRR, 2021 Consider a microphone array, such as those present in Amazon Echos, conference phones, or self-driving cars. One of the goals of these arrays is to decode the angles in which acoustic signals arrive at them. This paper considers the problem of estimating K angle of arrivals (AoA), i.e., the direct path's AoA and the AoA of subsequent echoes ...
Yu-Lin Wei, Romit Roy Choudhury
openaire +3 more sources
Null broadened–deepened array antenna beamforming for GNSS jamming mitigation in moving platforms
ICT Express, 2022 Steering vector and covariance matrix estimation mismatch along with moving jammer/platform, can affect the performance of null-steering beamformer. In this paper, by utilizing null-widening, null-deepening and diagonal loading shrinkage in space–time ...
Omid Sharifi-Tehrani +2 more
doaj +1 more source