Results 31 to 40 of about 1,799 (215)

A self-coherent receiver for detection of
PolMUX coherent signals

Optics Express, 2012
A self-coherent receiver capable of demultiplexing PolMUX-signals without an external polarization controller is presented. Training sequences are introduced to estimate the polarization rotation, and a decision feedback recursive algorithm mitigates the random walk of the recovered field.
Li, Jingshi, Schmogrow, Rene, Hillerkuss, David, Schindler, Philipp C., Nazarathy, Moshe, Schmidt-Langhorst, Carsten, Ezra, Shalva-Ben, Tselniker, Igor, Koos, Christian, Freude, Wolfgang, Leuthold, Juerg   +10 more
openaire   +4 more sources

An Improved Toeplitz Approximation Method for Coherent DOA Estimation in Impulsive Noise Environments

Entropy, 2023
Direction of arrival (DOA) estimation is an important research topic in array signal processing and widely applied in practical engineering. However, when signal sources are highly correlated or coherent, conventional subspace-based DOA estimation ...
Jiang’an Dai, Tianshuang Qiu, Shengyang Luan, Quan Tian, Jiacheng Zhang   +4 more
doaj   +1 more source

Coherent Signal DOA Estimation for MIMO Radar under Composite Background of Strong Interference and Non-Uniform Noise

Sensors, 2022
To address the problems of low accuracy and low robustness of the conventional algorithm in estimating the direction of arrival (DOA) of coherent signals against a composite background of strong interference and non-uniform noise, in this paper, a ...
Bin Lin, Guoping Hu, Hao Zhou, Guimei Zheng   +3 more
doaj   +1 more source

Joint 2-D angles and time delay estimation of coherent wideband signals [PDF]

MATEC Web of Conferences, 2020
Joint direction of arrival (DOA) and time delay (TD) estimation of wideband signals such as WIFI and mobile communication signals has to face the challenges aroused by multipath effect in indoor environments.
Li Xiangzhi, Cui Weijia, Xu Haiyun, Yang Songtao, Li Hao, Zhang Yankui, Ba Bin   +6 more
doaj   +1 more source

Robust Suppression of Deceptive Jamming with VHF-FDA-MIMO Radar under Multipath Effects

Remote Sensing, 2022
Frequency diverse array multiple-input multiple-output (FDA-MIMO) radar has received a lot of attention due to the advantages of waveform diversity. Suppression of mainlobe deceptive jamming can be effectively achieved with the degree of freedom (DOF) in
Yibin Liu, Chunyang Wang, Jian Gong, Ming Tan, Geng Chen   +4 more
doaj   +1 more source

Detection of coherent-pulse multi-frequency signals

Известия высших учебных заведений. Поволжский регион:Технические науки, 2022
Background. The detection of coherent-pulse multi-frequency radar signals against the background of the receiver's own noise is considered. The purpose of this research is to synthesize and analyze algorithms for detecting quasi-deterministic and ...
D.I. Popov
doaj   +1 more source

Cyclostationarity-based DOA estimation algorithms for coherent signals in impulsive noise environments

EURASIP Journal on Wireless Communications and Networking, 2019
Estimating direction of arrival (DOA) is important in a variety of practical applications. Conventional cyclostationarity-based coherent DOA estimation algorithms are not robust to non-Gaussian α-stable impulsive noise.
Yang Liu, Qiong Wu, Yinghui Zhang, Jing Gao, Tianshuang Qiu   +4 more
doaj   +1 more source

Number of Coherent Nodes Estimation Based on Multiple Feature Extraction in Wireless Sensor Network

IEEE Access, 2020
Knowing number of nodes is the precondition of their locating and estimation of other parameters in wireless sensor network, actually it can be evaluated according to the signal received by the sensor array.
Jiaqi Zhen, Xiaoli Zhang
doaj   +1 more source

Photonics-Assisted Multi-Band Microwave Receiver Based on Spectrum Analysis and Coherent Channelization

Frontiers in Physics, 2020
Due to the limitation of analog-to-digital/digital-to-analog converters, photonics-assisted channelized receivers are thought to be a promising approach to receiving wideband microwave signals.
Huan Huang, Chongfu Zhang, Chongfu Zhang, Wei Zheng, Yong Chen, Haifeng Yang, Zichuan Yi, Feng Chi, Kun Qiu   +8 more
doaj   +1 more source

DOA Finding with Support Vector Regression Based Forward–Backward Linear Prediction

Sensors, 2017
Direction-of-arrival (DOA) estimation has drawn considerable attention in array signal processing, particularly with coherent signals and a limited number of snapshots.
Jingjing Pan, Yide Wang, Cédric Le Bastard, Tianzhen Wang   +3 more
doaj   +1 more source