Results 21 to 30 of about 985,100 (309)

Feature Extraction Method of Helicopter Target Based on Flicker Phenomenon Combined With Phase Compensation

open access: yesIEEE Access, 2022
For the typical multi-component periodic micro-Doppler signal parameter estimation, a helicopter rotor feature extraction method based on flicker phenomenon and phase compensation is proposed in this paper.
Saiqiang Xia   +6 more
doaj   +1 more source

Peak-to-Average Power Ratio Reduction for Integration of Radar and Communication Systems Based on OFDM Signals with Block Golay Coding

open access: yesLeida xuebao, 2014
Integration of radar and communication systems based on OFDM signals results in large Peak-to-Average Power Ratio (PAPR). Limited by the code rate, algorithm that use the Golay sequence code to restrain PAPR can only be applied under the condition of a ...
Li Zi-qi   +4 more
doaj   +1 more source

Improved multi-target tracking algorithm based on SMC-CBMeMBer for the airborne Doppler radar

open access: yesThe Journal of Engineering, 2019
To effectively suppress clutter in airborne Doppler radar and improve multi-target tracking (MTT) performance, this study proposes an improved MTT algorithm based on Sequential Monte Carlo Cardinality Balanced Multi-target Multi-Bernoulli (SMC-CBMeMBer ...
Muyang Luo   +4 more
doaj   +1 more source

Earthquake early warning system [PDF]

open access: yes, 2020
As the climate undergoes changes, the number of natural disasters increase and the severity of these occurrences increases over time. As the population of human race increases, natural protective terrains and barriers were destroyed for urbanization due ...
Abas, Khairul Hamimah   +3 more
core  

Early warning system for the prevention and control of unauthorized accesses to air navigation services infrastructures [PDF]

open access: yes, 2015
Early warning systems are fundamental instruments for the management of critical situations since they are able to signal in advance any anomaly with respect to ordinary situations.
Accettura, Antonella   +5 more
core   +1 more source

Adaptive high-degree cubature Kalman filter in the presence of unknown measurement noise covariance matrix

open access: yesThe Journal of Engineering, 2019
Here, the authors address the state estimation problem of non-linear systems in the presence of unknown measurement noise (MN) covariance matrix. Recently, a high-degree cubature Kalman filter (HCKF) has been successfully used in the non-linear-state ...
Hong Xu   +5 more
doaj   +1 more source

A New Track Association Model Based on Uncertainty Distribution

open access: yesIEEE Access, 2023
Aiming at the problem of degradation of correlation quality caused by excessive idealization of noise in the traditional track correlation model, this paper introduces the uncertainty theory in the track correlation process, and uses the uncertainty ...
Qiu Jianjie, Cai Yichao, Li Hao, Han Yu
doaj   +1 more source

A Space-time Adaptive Processing Algorithm Based on Joint Sparse Recovery

open access: yesLeida xuebao, 2014
Sparse recovery Space-Time Adaptive Processing (STAP) methods for obtaining the clutter spectrum require few training samples and can effectively suppress clutter in nonhomogeneous clutter environments.
Duan Ke-qing   +4 more
doaj   +1 more source

DOA estimation for different frequency with different angles based on wideband co-prime array

open access: yesThe Journal of Engineering, 2019
Most of the signals received in the field of wireless communication, radar, and sonar are wideband, so there is an active research on wideband direction-of-arrival (DOA).
Geng Wang   +5 more
doaj   +1 more source

Consensus Continuous-Discrete Gaussian Filtering Using Fully Symmetric Interpolatory Quadrature

open access: yesIEEE Access, 2020
Consensus-based estimators have been applied in the state estimation for cooperative multi-sensor systems, and most of current studies are for the continuous-time or discrete-time case.
Jiawei Li   +3 more
doaj   +1 more source

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