Observability analysis and enhancement of radome aberration estimation with line-of-sight angle-only measurement

Seo, Min-Guk; Tahk, Min-Jea

doi:10.1109/taes.2015.140531

Cited by 28 publications

(19 citation statements)

References 16 publications

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“…A maneuver algorithm, revised adaptive intermittent maneuver is introduced to enhance the estimation performance of the LOS angle in Ref. 7. Based on the theory that the radome refraction angle can be expressed by the radome slope and the missile attitude angle, the second approach is to estimate the radome slope firstly and compensate the radome refraction angle in the guidance loop.…”

Section: Introductionmentioning

confidence: 99%

Adaptive control law based integrated guidance and control design for missile with the radome error compensation

Guo,

Zhou,

Zhou

2024

Proceedings of the Institution of Mechanical Engineers, Part G:

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This paper presents an integrated guidance and control design for the homing missiles with the radome error compensation to address the guidance problems caused by radome. Firstly, a mathematics model of the integrated guidance and control system with the compensation for the radome error is built by integrating the missile dynamics and the engagement kinematics between the missile and ground target on the longitudinal motion. Secondly, the model is transformed into a normal form by nonlinear coordinate transformation because the system is a time-varying system with mismatched uncertainties. Thirdly, an adaptive control law of the system is designed by adopting the sliding mode control theory, and the stability of the closed-loop system is also conducted. Finally, the simulation proves that the proposed integrated guidance and control scheme can effectively compensate for the radome error and ensure the hit-to-kill attack to the target.

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Section: Introductionmentioning

confidence: 99%

Adaptive control law based integrated guidance and control design for missile with the radome error compensation

Guo,

Zhou,

Zhou

2024

Proceedings of the Institution of Mechanical Engineers, Part G:

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“…The radome is employed for homing missiles [1] to protect the seeker antenna from air flow [2] and to reduce the aerodynamic drag as well [3]. The electromagnetic wave is not refracted by the radome when the shape of the radome is a perfect hemisphere [4]. However, for the reason that the aerodynamic drag force is excessively large in endo-atmospheric engagements, the radome is shaped to be non-hemispheric to reduce the drag [5] at the cost of inducing refraction of the electromagnetic wave [6].…”

Section: Introductionmentioning

confidence: 99%

“…A nonlinear filtering algorithm is proposed to decouple the radome error from the nominal missile states [2], in which a two-step estimator is implemented with measurements of the azimuth and elevation angles. State estimation algorithms with LOS angle measurements have been studied in various studies [4,12,27], in which the radome slope is estimated from the information generated by dither and extracted by bandpass filtering [28]. At the same time, the nonlinear filtering techniques [29] have practical limitations, including sensitivity to initial value, slow convergence and performance degradation in the presence of model parameter mismatch [6].…”

Section: Introductionmentioning

confidence: 99%

“…In order to overcome the poor observability problem for radome slope estimation [4] with LOS-angle-only measurements, a novel method is proposed in this work for online identification of radome slope by combining adaptive filtering and statistical learning techniques. The main contributions of this work are two-fold.…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, an analytical expression is obtained for radome slope estimation by deriving the derivative of the mapping function represented with a Gaussian process model. Existing methods [4,32] often treat the unknown radome slope as a state variable and approximate it with a random walk model. However, the parameter of the surrogate model, i.e., the variance, is difficult to determine in practice.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

In-Flight Radome Slope Estimation for Homing Guidance Using Bearing-Only Measurement via Gaussian Process Regression

Jin

Zhang

2022

Aerospace

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The radome refraction problem gives rise to guidance performance deterioration for homing missiles. Aiming to eliminate the effect of radome refraction on the radar seeker, a novel method is proposed for correcting the radome-induced measurement error by using the estimated guidance information. A dynamic model for the estimation system is formulated and the guidance information is estimated online via a multiple-model filtering framework. A Gaussian process regression scheme is introduced to reconstruct the mapping model with respect to the radome error and look angle. Furthermore, an analytical expression for radome slope estimation is derived by calculating the derivative of the surrogate function, represented with Gaussian process models. The contaminated measurement is corrected based on the estimated guidance information and radome slope. Extensive simulation results illustrate that the proposed method is able to estimate the radome slope accurately and improve the guidance accuracy effectively.

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Impact time and angle constrained integrated guidance and control with application to salvo attack

Wang

Tan

Cheng

2019

Asian Journal of Control

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In this paper, a novel method is proposed to estimate the impact time (time taken to hit the target) for missiles guided by integrated guidance and control (IGC).Firstly, the elevator deflection command is directly designed in the frame of IGC to make the line-of-sight (LOS) angle converge to the desired value in finite time; thereafter, the missiles will fly along the desired LOS until they hit the target.Then a method to estimate the impact time is provided; this can help the user systematically choose the missile parameters in order to achieve a certain impact time, and thus this result can be applied to the case of salvo attack of multiple missiles without online data links. Finally, simulation studies are performed to verify the effectiveness of the proposed scheme.

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Observability analysis and enhancement of radome aberration estimation with line-of-sight angle-only measurement

Cited by 28 publications

References 16 publications

Adaptive control law based integrated guidance and control design for missile with the radome error compensation

Adaptive control law based integrated guidance and control design for missile with the radome error compensation

In-Flight Radome Slope Estimation for Homing Guidance Using Bearing-Only Measurement via Gaussian Process Regression

Impact time and angle constrained integrated guidance and control with application to salvo attack

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