scholarly journals Fast direction of arrival estimation method for ultra‐high voltage converter valve insulation board partial discharge based on a sparse array

2021 ◽  
Author(s):  
Yunpeng Liu ◽  
Jiashuo Liu ◽  
Tingyu Lai ◽  
Xiaoguang Wei ◽  
Shaotong Pei
Keyword(s):  
High Voltage ◽  
Partial Discharge ◽  
Estimation Method ◽  
Direction Of Arrival ◽  
Direction Of Arrival Estimation ◽  
Voltage Converter ◽  
Sparse Array ◽  
Ultra High Voltage

scholarly journals An Enhanced Smoothed L0-Norm Direction of Arrival Estimation Method Using Covariance Matrix

Sensors ◽  
2021 ◽  
Vol 21 (13) ◽  
pp. 4403
Author(s):  
Ji Woong Paik ◽  
Joon-Ho Lee ◽  
Wooyoung Hong
Keyword(s):  
Covariance Matrix ◽  
Phased Array ◽  
Null Space ◽  
Estimation Method ◽  
Direction Of Arrival ◽  
Estimation Algorithm ◽  
Doa Estimation ◽  
Direction Of Arrival Estimation ◽  
Improve Performance ◽  
Space Projection

An enhanced smoothed l0-norm algorithm for the passive phased array system, which uses the covariance matrix of the received signal, is proposed in this paper. The SL0 (smoothed l0-norm) algorithm is a fast compressive-sensing-based DOA (direction-of-arrival) estimation algorithm that uses a single snapshot from the received signal. In the conventional SL0 algorithm, there are limitations in the resolution and the DOA estimation performance, since a single sample is used. If multiple snapshots are used, the conventional SL0 algorithm can improve performance in terms of the DOA estimation. In this paper, a covariance-fitting-based SL0 algorithm is proposed to further reduce the number of optimization variables when using multiple snapshots of the received signal. A cost function and a new null-space projection term of the sparse recovery for the proposed scheme are presented. In order to verify the performance of the proposed algorithm, we present the simulation results and the experimental results based on the measured data.

scholarly journals A Robust Real Time Direction-of-Arrival Estimation Method for Sequential Movement Events of Vehicles

Sensors ◽  
2018 ◽  
Vol 18 (4) ◽  
pp. 992 ◽  
Author(s):  
Huawei Liu ◽  
Baoqing Li ◽  
Xiaobing Yuan ◽  
Qianwei Zhou ◽  
Jingchang Huang
Keyword(s):  
Real Time ◽  
Estimation Method ◽  
Direction Of Arrival ◽  
Direction Of Arrival Estimation ◽  
Time Direction ◽  
Sequential Movement
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