RCS promotion in orbital angular momentum imaging radar with rotational antenna

Zhang, Chao; Jiang, Xuefeng; Chen, Dong

doi:10.1049/iet-rsn.2019.0100

Cited by 9 publications

(7 citation statements)

References 24 publications

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“…The simulated radiation patterns show that the transmitarray can produce OAM beam scanning in the elevation angle from À40 to 40 , which is basically consistent with design from À36.42 to 36.42 . Figure 11 are the simulated near field and phase distributions for case (2)(3)(4)(5)(6) and case (8)(9)(10)(11)(12) at z = 25λ 0 xoy plane. The zero-intensity area in the center for l = 2 is larger than that for l = 1, and the helical phase pattern proves the phase change of OAM beams with mode l = 2.…”

Section: Simulated Resultsmentioning

confidence: 99%

“…Over the past decades, orbit angular momentum (OAM) for its nature of infinite orthogonal modes, quantum, and high resolution could be applied in expanding channel capacity, imaging, detecting spinning object. [1][2][3][4][5][6] OAM vortex beams with different function are generated, such as broadband, [7][8][9] dual-frequency, 10 high efficiency, 11 multimode, [12][13][14] mode-multiplexing, 15 modereconfigurability, 16 and so on. Beam-steering OAM waves can meet the need of real-time communication, vortex imaging and other fields.…”

Section: Introductionmentioning

confidence: 99%

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Beam‐steering orbit angular momentum vortex waves by mechanically rotating transmitarray

Huang

Xie

2022

Int J RF Mic Comp-Aid Eng

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In this article, beam-steering orbit angular momentum (OAM) beams by mechanical rotating transmitarray, which is formed by three layer metasurfaces (MSs), is proposed. It is the first time to achieve steering OAM beams based on mechanical rotating transmitarray in microwave region. By mechanically rotating the middle and bottom MSs, different phase distributions are obtained, and then OAM beams in corresponding directions are generated.

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Section: Simulated Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Beam‐steering orbit angular momentum vortex waves by mechanically rotating transmitarray

Huang

Xie

2022

Int J RF Mic Comp-Aid Eng

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“…The rank K fusion rule is widely used in modern networked radar systems. Therefore, we used the rank K fusion rule to analyze the detection probability of networked radar [47], [48]. Suppose M is the number of radars in the netted radar system, when the number of radar detected in the system exceeds the detection threshold K 0 according to the rank K fusion rule, that means, the target has been detected by the radar system, and the approximate value of the optimal detection threshold K 0 is given by…”

Section: B the Detection Probability Of Netted Radarmentioning

confidence: 99%

A Novel Real-Time Penetration Path Planning Algorithm for Stealth UAV in 3D Complex Dynamic Environment

Zhang

Dai

et al. 2020

IEEE Access

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In recent years, stealth aircraft penetration path planning has been a significant research subject in the field of low altitude combat. However, previous works have mainly concentrated on the path planning for stealth unmanned aerial vehicle(UAV) in 2D static environment. In contrast, this paper addresses a novel real-time path planning algorithm for stealth UAV to realize the rapid penetration, which aims to devise a route penetration strategy based on the improved A-Star algorithm to address the problems of replanning for stealth UAV in 3D complex dynamic environment. The proposed method introduces the kinematic model of stealth UAV and detection performance of netted radar in the process of low altitude penetration. Additionally, POP-UP threats are adopted into three different threat scenarios, which is closer to the real combat environment. Moreover, further combined with the prediction technique and route planning algorithm, the multi-step search strategy is developed for stealth UAV to deal with POP-UP threats and complete the replanning of the route in different scenarios. Furthermore, the attitude angle information is integrated into the improved A-Star algorithm, which reflects the characteristics of the dynamic radar cross section(RCS) and conforms to the actual flight requirements for the stealth UAV. Finally, the improved A-Star algorithm, the sparse A-Star Search(SAS), and the dynamic A-Star algorithm(D-Star) are respectively adopted to address the problem of penetration route planning for stealth UAV in three different threat scenarios. Numerical simulations are performed to illustrate that the proposed approach can achieve rapid penetration route planning for stealth UAV in a dynamic threat scenario, and verify the validity of the improved A-Star algorithm which is compared to the other two algorithms. INDEX TERMS Stealth unmanned aerial vehicle, dynamic radar cross-section, netted radar, real-time path planning, A-Star algorithm.

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“…The rank K fusion rule is widely adopted in modern networked radar systems. Therefore, we adopt the rank K fusion rule to analyze the detection probability of networked radar [25,26].…”

Section: Dual-basementioning

confidence: 99%

Rapid Penetration Path Planning Method for Stealth UAV in Complex Environment with BB Threats

Zhang

Dai

et al. 2020

International Journal of Aerospace Engineering

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This paper presents the flight penetration path planning algorithm in a complex environment with Bogie or Bandit (BB) threats for stealth unmanned aerial vehicle (UAV). The emergence of rigorous air defense radar net necessitates efficient flight path planning and replanning for stealth UAV concerning survivability and penetration ability. We propose the improved A-Star algorithm based on the multiple step search approach to deal with this uprising problem. The objective is to achieve rapid penetration path planning for stealth UAV in a complex environment. Firstly, the combination of single-base radar, dual-base radar, and BB threats is adopted to different threat scenarios which are closer to the real combat environment. Besides, the multistep search strategy, the prediction technique, and path planning algorithm are developed for stealth UAV to deal with BB threats and achieve the penetration path replanning in complex scenarios. Moreover, the attitude angle information is integrated into the flight path which can meet real flight requirements for stealth UAV. The theoretical analysis and numerical results prove the validity of our method.

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RCS promotion in orbital angular momentum imaging radar with rotational antenna

Cited by 9 publications

References 24 publications

Beam‐steering orbit angular momentum vortex waves by mechanically rotating transmitarray

Beam‐steering orbit angular momentum vortex waves by mechanically rotating transmitarray

A Novel Real-Time Penetration Path Planning Algorithm for Stealth UAV in 3D Complex Dynamic Environment

Rapid Penetration Path Planning Method for Stealth UAV in Complex Environment with BB Threats

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