Beam-pointing error compensation method of phased array radar seeker with phantom-bit technology

Qin, Wen; Liu, Tingting; Xia, Qing; Sun, Zedong

doi:10.1016/j.cja.2017.03.020

Cited by 21 publications

(22 citation statements)

References 9 publications

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“…The phase feedings of phase shifters were optimised in Refs. [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25] to improve the beam steering accuracy.…”

Section: Introductionmentioning

confidence: 99%

Random symmetric phase feeding compensation method for phased array radar based on equivalent monopulse model

Qiu

Zhang

et al. 2023

IET Microwaves Antenna & Prop

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In a phased array radar, the phase quantisation error of phase shifters can lead to the beam steering error (BSE) between the predetermined and the actual directions. Existing researches on phase feeding optimisation suffer from high computational complexity and large storage space. In this study, an equivalent monopulse method is first proposed to yield the BSE with O(N) complexity by formulating the equation between the phase quantisation error and BSE. Further, a symmetric phase feeding compensation (SPFC) method is developed on the basis of the proposed scheme to cancel the phase quantisation error employing a symmetric planar array. Subsequently, a random phase compensation method is formulated to further reduce the residual quantisation errors of SPFC, and a random symmetric phase feeding compensation (RSPFC) method is proposed. The proposed SPFC and RSPFC methods possess O(N) complexities and allow for parallel calculation of element phase feedings, thus making the proposed methods more applicable on the embedded beam controller of a phased array radar. Based on computer simulations and phased array radar experiments, the proposed SPFC and RSPFC methods are validated to yield superior beam pointing accuracies and can improve the fluctuations in angle tracking.

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“…The phase feedings of phase shifters were optimised in Refs. [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25] to improve the beam steering accuracy.…”

Section: Introductionmentioning

confidence: 99%

Random symmetric phase feeding compensation method for phased array radar based on equivalent monopulse model

Qiu

Zhang

et al. 2023

IET Microwaves Antenna & Prop

View full text Add to dashboard Cite

show abstract

“…A larger antenna diameter increases the operating range of the seeker, enables beam scanning, beam tracking, and other functions in a short time, and improves the ability of air defense missiles to track high-speed targets accurately [2]. When the missile is far from the target, the lag in tracking dynamics (due to long-term signal accumulation and the discrete beam pointing control in the angle tracking loop) results in the seeker having detection error that is too large to track a high-speed highly maneuverable target [3]. The strapdown seeker system removes the need for a complex mechanical servo mechanism, eliminates the crosscoupled disturbances of the pitch and yaw channels, improves the tracking speed, and reduces the overall volume and cost of the weapon system [4].…”

Section: Introductionmentioning

confidence: 99%

Barrier Lyapunov Function Based Integrated Missile Guidance and Control Considering Phased Array Seeker Disturbance Rejection Rate

Lin

Wang

2022

IEEE Access

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A two-dimensional missile-target engagement geometry is established considering the effect of the disturbance rejection rate (DRR) problem caused by phased array radar beam pointing error and radome refraction error in the guidance and control system. Compared with the traditional two-dimensional missile-target engagement geometry, the established model clearly shows the effect of the disturbance rejection rate problem on the missile line of sight and field-of-view constraint. The integrated missile guidance and control scheme is developed by adding the integral barrier Lyapunov function to dynamic surface control to satisfy the seeker field-of-view constraint while ensuring that the system has strong robustness. The target maneuvering and unmodeled disturbance with the effect of the DRR error slope as uncertain disturbances of the system and use the reduced-order extended state observer for online estimation. Moreover, the actuator deflection angle and angular rate constraints are guaranteed via the command filter. Stability analysis and numerical simulations show that the estimation and compensation of the seeker DRR error allow the proposed scheme to intercept a high-speed target accurately.INDEX TERMS integrated guidance and control, field-of-view constraint, disturbance rejection rate, barrier Lyapunov function

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“…Radar is the core component of a guidance system, which quickly and accurately identifies, locates, and tracks targets through searching, tracking, and imaging [1,2]. Modern radars have incorporated many new technologies, such as the phased array radar technology, multi-beam tracking technology, and high-resolution forward-looking imaging technology, to adapt to complex natural backgrounds and environments with strong electromagnetic interference and improve target adaptability and detectability [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Multiprobe Radiation Simulation Method for Phased Array Radar Performance Evaluation

Yang

et al. 2022

IEEE Access

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The phased array radar exhibits improved tracking accuracy and anti-jamming performance with multi-beam tracking, beam agility, and adaptive beam-forming capabilities. The performance evaluation of the phased array radar is essential for the product designing and development stage. However, the conventional injection simulation and triad radiation simulation methods are not suitable for phased array radars. Therefore, new methods for radiation simulation are required on an urgent basis for the performance evaluation of phased array radars in a reliable, reliable, and repeatable way. This paper focuses on designing a practical anechoic chamber system of multi-probe radiation suitable for phased array radars. The appropriate test distance, the physical size of the anechoic chamber, the multi-probe radiation signal model, and the number of probes required were discussed. Furthermore, an inversion method based on least squares was proposed to solve the complex weights of the probes, thereby simulating the desired apparent center position. The simulation results demonstrated the effectiveness of the proposed method.

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Beam-pointing error compensation method of phased array radar seeker with phantom-bit technology

Cited by 21 publications

References 9 publications

Random symmetric phase feeding compensation method for phased array radar based on equivalent monopulse model

Random symmetric phase feeding compensation method for phased array radar based on equivalent monopulse model

Barrier Lyapunov Function Based Integrated Missile Guidance and Control Considering Phased Array Seeker Disturbance Rejection Rate

Multiprobe Radiation Simulation Method for Phased Array Radar Performance Evaluation

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