Research on Influencing Factors of Detection Accuracy Based on Laser Seeker

Liu, Shuo; Liu, Zhiguo; Wang, Shicheng; Qiu, Xiong

doi:10.1088/1742-6596/1087/5/052039

Cited by 4 publications

(2 citation statements)

References 1 publication

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“…The researchers, Liu et al [32], Liang et al [20], Vo et al [33], Li et al [34], Aguilar et al [35], Zhang et al [36], Chen et al [37], Ünal et al [1], and Zhang et al [38], have conducted various investigations related to the beam size on 4-quadrant detectors, enhancing the linear measurement range, studying the measurement sensitivity of Gaussian and Laguerre-Gaussian beams on 4-quadrant detectors, expanding the linear measurement range, and examining the effects of a non-uniform spot on 4-quadrant detectors.…”

Section: Introductionmentioning

confidence: 99%

Laser seeker design with multi-focal diffractive lens

Ünal

2023

Eng. Res. Express

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Diffractive optical elements are increasingly favoured due to their ability to provide numerous design freedoms by adjusting the Fresnel regions. The design freedoms make it possible to meet multiple system functions in electro-optical systems simultaneously by using a single optical element. This research introduces a novel laser seeker design with a multi-focal diffractive lens that enhances a laser seeker’s measurement sensitivity and linear measurement range. The development of the multi-focal combined lens, featuring two distinct regions with unique focal lengths, aims to simultaneously fulfill two system functions within the laser seeker. The central region of the lens is intended for adjusting the linear measurement range, while the outer region is utilized to regulate the measurement sensitivity of the seeker. The numerical optical wave propagation method was employed to simulate the behaviour of the laser seeker with a multi-focal diffractive lens, and the combined diffractive lens was compared to an ideal lens in the scope of laser seeker application. The simulation results indicate that the measurement sensitivity of the seeker has been increased between 0° to ±3° angular incidence, and the linear measurement range has been increased from ±18° to ±26°. The findings of this study contribute to the advancement of multi-focal diffractive lenses, which fulfil multiple functions within an electro-optical system concurrently.

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Section: Introductionmentioning

confidence: 99%

Laser seeker design with multi-focal diffractive lens

Ünal

2023

Eng. Res. Express

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“…At the same time, the roll-pitch seeker adopts a semistrapdown stability control platform, on which no inertial devices are installed. The infrared detector of the roll-pitch seeker is fixed on the missile body, only the optical system is installed on the stable platform, and the incident light is transmitted to the detector through the light path composed of four mirrors [11][12][13]. This kind of structure not only reduces the size and mass of the seeker but also improves the aerodynamic performance of the missile body.…”

Section: Introductionmentioning

confidence: 99%

A New Compensation Method for DRR of a Roll-Pitch Seeker Based on ESO

Wei

Liu

et al. 2021

International Journal of Aerospace Engineering

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We propose a new DRR (Disturbance Rejection Rate) compensation method of a roll-pitch seeker based on ESO (extended state observer). The characteristics of a roll-pitch seeker and the DRR definition of two frames of a roll-pitch seeker are analyzed. The influence of different interference torques and different frequency bandwidths on the compensation effect is analyzed. Modeling and simulation of the guidance system of a roll-pitch seeker with the parasitic loop of DRR are carried out. Influence of the new DRR compensation method on dimensionless miss distance is analyzed. Mathematical simulation is established to compare the new ESO-based DRR compensation method with the existing methods such as the feedforward method and Kalman filter method. The analysis and simulation results show that the new ESO-based DRR compensation method has the advantages of high precision, good applicability, and easy adjustment, and the new method can effectively reduce the dimensionless miss distance with different types of input errors. The research of this proposed new method can provide a reference for the latest generation air-to-air missile operations in a high-altitude and high-speed environment and the high-precision research of a roll-pitch seeker.

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Semi-active laser seeker design with combined diffractive optical element (CDOE)

Ünal

2022

J Opt

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Research on Influencing Factors of Detection Accuracy Based on Laser Seeker

Cited by 4 publications

References 1 publication

Laser seeker design with multi-focal diffractive lens

Laser seeker design with multi-focal diffractive lens

A New Compensation Method for DRR of a Roll-Pitch Seeker Based on ESO

Semi-active laser seeker design with combined diffractive optical element (CDOE)

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