Results 1 to 10 of about 1,913 (164)

DOA Estimation Method of Weak Signal under the Compound Background of Strong Interference and Colored Noise

open access: yesInternational Journal of Antennas and Propagation, 2022
The traditional algorithm performing direction of arrival (DOA) estimation under the background of strong interference and colored noise has the problems of low estimation accuracy and small measurement targets.
Bin Lin   +4 more
doaj   +1 more source

Fast Trajectory Generation Method for Midcourse Guidance Based on Convex Optimization

open access: yesInternational Journal of Aerospace Engineering, 2022
To generate the midcourse guidance trajectory for intercepting the high-speed and high maneuvering target, which is a strongly nonlinear and strongly constrained problem, a two-stage convex optimization method is proposed to solve the optimal trajectory ...
Jinlin Zhang   +4 more
doaj   +1 more source

A New Radar Echo Generation Model for Ultra-Low Altitude Targets in Far-Field Conditions

open access: yesInternational Journal of Antennas and Propagation, 2022
This paper proposed a new radar echo simulation method for ultra-low altitude targets in far-field conditions. Based on the electromagnetic (EM) scattering calculation of target and environment, combined with the weighted four-path model, the scattering ...
Zhao Long Wang   +4 more
doaj   +1 more source

FDA-MIMO Beampattern Synthesis with an Analytical Method

open access: yesInternational Journal of Aerospace Engineering, 2021
Since the beampattern has the characteristics of range-angle dependence, frequency diverse array multiple-input multiple-output (FDA-MIMO) radar has a good application prospect.
Changlin Zhou   +5 more
doaj   +1 more source

Prescribed Performance Guidance Law with Multiple Constraints

open access: yesInternational Journal of Aerospace Engineering, 2022
In the terminal guidance phase of intercepting aerial target, a guidance law, satisfying impact angle constraint, acceleration constraint, and second-order dynamic characteristic of interceptor autopilot, is designed based on the prescribed performance ...
Xu Li, Jikun Ye, Chijun Zhou, Xiao Tang
doaj   +1 more source

Combined AGADESN with DBSCAN Algorithm for Cluster Target Motion Intention Recognition

open access: yesInternational Journal of Aerospace Engineering, 2022
In this paper, we consider the problem of motion intention recognition for cluster targets with splitting behaviour and lack of motion prior information.
Xirui Xue, Shucai Huang, Daozhi Wei
doaj   +1 more source

Search-Free Angle, Range, and Velocity Estimation for Monostatic FDA-MIMO

open access: yesInternational Journal of Antennas and Propagation, 2022
The monostatic frequency diverse array multiple-input multiple-output (FDA-MIMO) has attracted much attention recently. However, much research is concentrated on the estimation of angle-range parameters based on the FDA-MIMO radar, and the velocity has ...
Zihang Ding, Junwei Xie, Jiaang Ge
doaj   +1 more source

Performance and emissions of a diesel engine fueled by coal-based diesel fuels and their blends with polyoxymethylene dimethyl ethers

open access: yesScientific Reports, 2023
The objective of this study was to investigate the performance and emissions of a diesel engine fueled by coal-based diesel fuels and their blends with oxygenated fuel polyoxymethylene dimethyl ethers (PODEn).
Yuwei Zhao   +5 more
doaj   +1 more source

Numerical Study on Effects of Arrayed Pulsed Energy Depositions on a Supersonic Combustor

open access: yesInternational Journal of Aerospace Engineering, 2022
This paper proposes a method to improve the mixing efficiency of a supersonic combustor by using arrayed pulsed energy depositions, and this method is verified by a numerical simulation.
Zilin Cai   +3 more
doaj   +1 more source

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