Results 251 to 260 of about 16,431,976 (329)

A robust estimator for direction finding

[Proceedings] ICASSP 91: 1991 International Conference on Acoustics, Speech, and Signal Processing, 1991
Among high-resolution direction-of-arrival (DOA) estimators, it is known that the maximum likelihood estimation (MLE) has the most desirable performance in resolution. However, when the SNR falls below a certain threshold, its performance degrades considerably.
Qiang Wu 0006, Kon Max Wong
openaire   +1 more source

Direction Finding of Linear Frequency Modulation Signal in Time Modulated Array With Pulse Compression

IEEE Transactions on Antennas and Propagation, 2020
A novel direction-finding method with time-modulated array (TMA) is proposed for modulating the echo linear frequency modulation (LFM) signal and analyzing its harmonic characteristics.
Jing-Feng Chen, Chong He, Xianling Liang, Lin Bai, Xu-Dong Bai, Wei-Ren Zhu, Ronghong Jin   +6 more
semanticscholar   +1 more source

Direction Finding Using Convolutional Neural Networks and Convolutional Recurrent Neural Networks

Signal Processing and Communications Applications Conference, 2020
– In this paper, alternative direction finding methods have been proposed using deep learning techniques. Firstly, Regeression and Classification models have created by using Convolutional Neural Networks (CNNs).
Fehmi Ayberk Uckun, H. Ozer, Ekin Nurbaş, Emrah Onat   +3 more
semanticscholar   +1 more source

Direction Finding Based on Time-Modulated Array With Multiharmonic Analysis

IEEE Transactions on Antennas and Propagation, 2020
Direction finding with time-modulated array (TMA) has attracted considerable attention recently. In this communication, a multiharmonic analysis for direction finding based on TMA is proposed.
Jing-Feng Chen, Wen-Zhi Wang, Chong He, Ya-Jun Li, Xian-Ling Liang, Jun-Ping Geng, Ronghong Jin   +6 more
semanticscholar   +1 more source

Direction-Finding Based on Time-Modulated Array Without Sampling Synchronization

IEEE Antennas and Wireless Propagation Letters, 2020
A two-element direction-finding method based on a time-modulated array (TMA) without sampling synchronization that exploits new asymmetric time sequences is proposed.
Gang Ni, Chong He, Yi-Qing Liu, Jing-Feng Chen, Ronghong Jin   +4 more
semanticscholar   +1 more source

Direction finding

Wireless Communications Systems, 2018
You’ve identified an interfering signal, now you need to track it to its source. This is done with various methods of direction finding. The least effective way to locate an emitter is to use a non-directional antenna and just try to go in the direction ...
Helgi Thor Ingason, Haukur Ingi Jonasson
openaire   +2 more sources

Robust direction finding

Conference Record of the Thirty-Eighth Asilomar Conference on Signals, Systems and Computers, 2004., 2005
This paper considers the problem of estimating directions of arrival (DOAs) from sensor-array data when the positions of the sensors are not precisely known. The proposed algorithm is an extension of a previously developed approach based on weighted subspace fitting.
Vaccaro, Richard J., Owsley, Norman L.
openaire   +1 more source

Spatial Spectrum Direction Finding by Programmable Metasurface With Time Modulation

IEEE Antennas and Wireless Propagation Letters
A novel direction-finding method based on programmable metasurface and time modulation theory is proposed and verified. Its principle is as follows.
Qingkui Zhan, Shiyuan Li, Baojiang Yan, A. Cao, Xu-Dong Bai, Chong He   +5 more
semanticscholar   +1 more source

Direction Finding with UWB and BLE: A Comparative Study

IEEE International Conference on Mobile Adhoc and Sensor Systems, 2020
Using Angle-of-Arrival based on Phase-Difference-of-Arrival is a recent trend in indoor positioning. Although the basic techniques for direction estimation have been known and used for a long time in different application scenarios (e.g., RADAR), the ...
L. Botler, Michael Spörk, K. Diwold, K. Römer   +3 more
semanticscholar   +1 more source

Decoupled direction finding: detection

Proceedings of the 1998 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP '98 (Cat. No.98CH36181), 2002
Antenna arrays are likely to be an important feature of future mobile communication systems. With an antenna array, mobile users can be separated by a spatial filtering procedure allowing several users on the same carrier frequency. The uplink part (mobile to base) not only can, but is better solved without using any spatial knowledge in terms of ...
openaire   +1 more source