Results 31 to 40 of about 173,405,058 (188)
HYBRID AOA AND TDOA MEASUREMENTS BASED MULTI-SOURCE LOCALIZATION USING THE GENETIC ALGORITHM [PDF]
ICTACT Journal on Communication TechnologyThe multi-source localization in sensor array networks is a major challenge for radar and sonar. Recent advances in array signal processing techniques and hardware technologies have resulted in a significant increase in the accuracy of angle of arrival ...
Un-Il Kim +3 more
doaj +1 more source
A Machine Learning Perspective on Automotive Radar Direction of Arrival Estimation
IEEE Access, 2022 Millimeter-wave sensing using automotive radar imposes high requirements on the applied signal processing in order to obtain the necessary resolution for current imaging radar.
Jonas Fuchs +4 more
doaj +1 more source
Sensors, 2018 In the paper, the estimation of joint direction-of-departure (DOD) and direction-of-arrival (DOA) for strictly noncircular targets in multiple-input multiple-output (MIMO) radar with unknown mutual coupling is considered, and a tensor-based angle ...
Yuehao Guo +6 more
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Journal of Low Frequency Noise, Vibration and Active Control, 2021 This paper proposes a direction of arrival estimation based on sparse signal reconstruction in the presence of alpha noise by the off-grid orthogonal matching pursuit algorithm.
LongKai Liang +3 more
doaj +1 more source
High-precision robust broadband ultrasonic location and orientation estimation [PDF]
, 2009 This paper presents an indoor broadband ultrasonic system for estimation of a mobile device’s 3-D location and three-axis orientation using beacons. It presents the first implementation and characterization of a real frequency hopping spread spectrum ...
J. R. Gonzalez +3 more
core +2 more sources
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 +3 more
core +3 more sources
Power Scalable Angle of Arrival Estimation Using Pilot Design With Orthogonal Subsequences
IEEE Open Journal of the Communications Society, 2021 Energy efficient array processing is critical to implement feasible solutions for directional communication in a mmWave channel. MmWave channels are highly susceptible to blockage and require frequent angle of arrival (AoA) estimation.
Mahbuba S. Ullah +2 more
doaj +1 more source
FEBS Letters, EarlyView.Encapsulins are protein nanocompartments that play an important role in iron storage. In the Myxococcus xanthus encapsulin system, two cargo proteins called EncB and EncC contribute to iron mineralization. Here, we show that EncB and EncC generate iron‐containing minerals with distinct chemical compositions, suggesting that the composition of stored ...
Harry B. McDowell +2 more
wiley +1 more source
Structural and biochemical analysis of a B12 superbinder
FEBS Letters, EarlyView.BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices +3 more
wiley +1 more source
Direction of Arrival Estimation in Low-Grazing Angle: A Partial Spatial-Differencing Approach
IEEE Access, 2017 This paper addresses a partial spatial-differencing (PSD) approach for the direction of arrival estimation in a low-grazing angle (LGA) condition. By dividing the sample covariance matrix into several column subvectors, we first form the corresponding ...
Junpeng Shi, Guoping Hu, Xiaofei Zhang
doaj +1 more source