A line-of-sight rate estimation method for roll-pitch gimballed infrared seeker

Wang, Xinchun; Mo, Bo; Li, Xuan; Liu, Fuxiang

doi:10.1016/j.ijleo.2019.162935

Cited by 7 publications

(12 citation statements)

References 15 publications

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“…Therefore, we usually design suitable LOS rate extraction schemes to obtain the guidance information. The commonly used extraction schemes are direct extraction methods [7], filtering estimation methods [8,9] and tracking differentiator estimation methods [10,11]. The common feature of these methods is that the seeker can always track the real target.…”

Section: Introductionmentioning

confidence: 99%

Line-of-sight rates extraction of roll-pitch seeker under anti-infrared decoy state

Li²,

Xia

2021

J. of Syst. Eng. Electron.

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In this paper, the method of extracting guidance information such as the line-of-sight (LOS) rates under the anti-infrared decoy state for the roll-pitch seeker is researched. Coordinate systems which are used to describe the angles transform are defined. The LOS angles reconstruction model of the roll-pitch seeker in inertial space is established. A Kalman filter model for extracting LOS rates of the roll-pitch seeker is proposed. In this model, the target performs constant acceleration (CA) model maneuvers. The error model of LOS rates extraction under infrared decoy state is established. Several existing methods of extracting LOS rates under anti-infrared decoy state are listed in this paper. Different from the existing methods, a novel method that uses extrapolated values of target accelerations as filter measurements is proposed to solve the guidance information extraction problem under the anti-infrared decoy state. Numerical simulations are conducted to verify the effectiveness of the proposed method under different target maneuvering models such as the CA model, the CA extended model and the singer model. The simulation results show that the proposed method of extracting guidance information such as LOS rates for the rollpitch seeker under the anti-infrared decoy state is effective.

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Section: Introductionmentioning

confidence: 99%

Line-of-sight rates extraction of roll-pitch seeker under anti-infrared decoy state

Li²,

Xia

2021

J. of Syst. Eng. Electron.

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“…This kind of structure not only reduces the size and mass of the seeker but also improves the aerodynamic performance of the missile body. The roll-pitch infrared seeker has the characteristics of infrared imaging guidance, strapdown guidance, large field of view, and miniaturization so that it is very suitable for short-range combat air-to-air missiles [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

“…To solve the problem of the roll-pitch seeker's suppression of interference torque and compensation for DRR, many researchers have proposed some quantitative methods [15,[20][21][22][23][24][25][26]. Li et al [20,21] take the platform seeker as the research object and propose the DRR compensation strategy based on ESO, which cannot be applied to a roll-pitch seeker without improvement.…”

Section: Introductionmentioning

confidence: 99%

“…Li et al [20,21] take the platform seeker as the research object and propose the DRR compensation strategy based on ESO, which cannot be applied to a roll-pitch seeker without improvement. Liu et al [15,22] propose a differentiator-based DRR compensation method for a rollpitch seeker. In the case of small information transfer error within the frame of a roll-pitch seeker, this differentiatorbased compensation method has a positive effect, but when the information transfer error is large, the compensation effect is not so good.…”

Section: Introductionmentioning

confidence: 99%

“…Lin et al [26] proposed an estimation method combining Kalman filtering and ESO, but it was not used in the rollpitch seeker. The above-mentioned methods [15,[20][21][22][23][24][25][26] cannot completely solve the DRR compensation problem of the roll-pitch seeker under different simulation environments. The compensation effect will change with the change of the environment, and the influence of model loop parameters on the compensation effect is not considered in these existing methods either.…”

Section: Introductionmentioning

confidence: 99%

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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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