Angle Measurement of Objects outside the Linear Field of View of a Strapdown Semi-Active Laser Seeker

Zheng, Yongbin; Chen, Huimin; Zhou, Zongtan

doi:10.3390/s18061673

Cited by 5 publications

(2 citation statements)

References 23 publications

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“…The accurate angle measurement of the detected object has a significant impact on the accuracy of its tracking [38][39][40][41][42]. In order to correctly determine the angular position of the detected object, it should be determined the law of airspace scanning by the optoelectronic system.…”

Section: Vector Filtration Of Control Signals By Means Of the Extended Kalman Filtermentioning

confidence: 99%

Control of Optoelectronic Scanning and Tracking Seeker by Means the LQR Modified Method with the Input Signal Estimated Using of the Extended Kalman Filter

Gapiński¹,

Koruba

2021

Energies

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The paper presents the concept of controlling the designed optoelectronic scanning and tracking seeker. The above device is intended for the so-called passive guidance of short-range anti-aircraft missiles to various types of air maneuvering targets. In the presented control method, the modified linear-quadratic regulator (LQR) and the estimation of input signals using the extended Kalman filter (EKF) were used. The LQR regulation utilizes linearization of the mathematical model of the above-mentioned seeker by means of the so-called Jacobians. What is more, in order to improve the stability of the seeker control, vector selection of signals received by the optoelectronic system was used, which also utilized EKF. The results of the research are presented in a graphical form. Numerical simulations were carried out on the basis of the author’s own program developed in the programming language C++.

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Section: Vector Filtration Of Control Signals By Means Of the Extended Kalman Filtermentioning

confidence: 99%

Control of Optoelectronic Scanning and Tracking Seeker by Means the LQR Modified Method with the Input Signal Estimated Using of the Extended Kalman Filter

Gapiński¹,

Koruba

2021

Energies

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“…It can be used to measure small displacements [1]. Based on the above characteristics, a four-quadrant detector can be used for precision error measurement [2], optical tweezers [3], laser communication [4] and laser guidance [5].…”

Section: Introductionmentioning

confidence: 99%

Improve the Detection Range of Semi-Active Laser Guidance System by Temperature Compensation of Four-Quadrant PIN Detector

Siyuan

Liu

Zhang

et al. 2019

Sensors

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The detection range of a semi-active laser guidance system can deviate significantly from the design value over a wide ambient temperature range. In this paper, a mathematical model of the detection range of a semi-active laser guidance system is built and the main factors affecting the detection range are analyzed. The parameter responsivity, which shows significant change, is found by applying the ambient temperature stress to the four-quadrant PIN detector and its signal processing chain. The relationship between the maximum detection range and ambient temperature is established based on a given signal-to-noise ratio, which is necessary for reliable detection. The target temperature and tolerance are setup for real-time temperature compensation for the four-quadrant PIN detector. The ambient temperature stress is applied to the system under compensation to verify the effect of compensation. The experimental results show that the ratio of the maximum variation of the detection range to the design point is 6.9% after the compensation is implemented when the ambient temperature changes from −40 °C to 60 °C, which is improved by 13.2% compared to that without compensation.

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Improving seeking precision by utilizing ghost imaging in a semi-active quadrant detection seeker

Wang

Chen

et al. 2021

Chinese Journal of Aeronautics

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Angle Measurement of Objects outside the Linear Field of View of a Strapdown Semi-Active Laser Seeker

Cited by 5 publications

References 23 publications

Control of Optoelectronic Scanning and Tracking Seeker by Means the LQR Modified Method with the Input Signal Estimated Using of the Extended Kalman Filter

Control of Optoelectronic Scanning and Tracking Seeker by Means the LQR Modified Method with the Input Signal Estimated Using of the Extended Kalman Filter

Improve the Detection Range of Semi-Active Laser Guidance System by Temperature Compensation of Four-Quadrant PIN Detector

Improving seeking precision by utilizing ghost imaging in a semi-active quadrant detection seeker

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