Algorithm of Impact Point Prediction for Intercepting Reentry Vehicles

Liu, Chengyu; Liu, Chiun-Chien; Tuan, Pan-Chio

doi:10.14429/dsj.56.1877

Cited by 6 publications

(5 citation statements)

References 12 publications

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“…Thus, the interception performance of the interceptor deteriorates at small speed ratios. The interceptor is assumed to be guided by the PNG law (23), and the effects of the speed ratio, path angle, and LOS angle on the interceptor performance are comprehensively analysed.…”

Section: Scenariomentioning

confidence: 99%

“…Guidance refers to the process of issuing commands for the interceptor to adjust its position and orientation to fly toward its target while satisfying several constraints [18,19] and demonstrating the optimal performance [20,21]. Many researchers have investigated the interception of hypersonic vehicles and designed various forms of guidance laws [22][23][24][25][26]. Depending on the number of interceptors, the existing guidance laws for intercepting hypersonic vehicles can be categorised as single-interceptor guidance laws or multi-interceptor cooperative guidance laws [27].…”

Section: Introductionmentioning

confidence: 99%

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Bulletin of the Polish Academy of Sciences: Technical Sciences

Liu,

Yan

et al. 2022

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The conditions for accurately intercepting hypersonic vehicles by low-speed interceptors in the terminal guidance process are examined, considering the general form of a guidance scheme. First, based on the concept of the engagement geometry, three interception scenarios are established considering different manoeuvring configurations of the interceptors and hypersonic vehicle. Second, the boundary conditions for intercepting hypersonic vehicles (with speeds higher than those of the interceptors) are specified for the three scenarios, considering several factors: the speed, path angle, line-of-sight angle, and available overload of the interceptor; path angle and manoeuvrability of the hypersonic vehicle; and relative distance between the interceptor and vehicle. A series of simulations are performed to clarify the influence of each factor on the Interception performance in the three interception scenarios. The challenges associated with accurately intercepting hypersonic vehicles by low-speed interceptors are summarised, and several recommendations for designing guidance laws are presented.

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Section: Scenariomentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Bulletin of the Polish Academy of Sciences: Technical Sciences

Liu,

Yan

et al. 2022

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“…A lot of research on entry guidance techniques with no-fly zone constraints has been conducted for hypersonic weapons [9,10]. However, there are few research works on intercepting these vehicles [11]. Consequently, new technical challenges are raised to intercept these weapons [12].…”

Section: Introductionmentioning

confidence: 99%

Robust Guidance Algorithm against Hypersonic Targets

Chen¹,

Han²,

Ren³

2020

Military Engineering

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This chapter presents a robust guidance algorithm for intercepting hypersonic targets. Since the differential of the line-of-sight rate is more sensitive to the target maneuver, a nonlinear proportional and differential guidance law (NPDG) is given by employing the differential of the line-of-sight rate produced by a nonlinear tracking differentiator. Based on the NPDG, a fractional calculus guidance law (FCG) is presented by utilizing the differential definition of fractional order. On the basis of interceptor-target relative motions, the stability criteria of the guidance system of the FCG are deduced. In different target maneuver and noisy cases, simulation results verify that the proposed guidance laws have small miss distances and the FCG has a stronger robustness.

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“…A lot of research on entry guidance techniques with no-fly zones constraints have been conducted for hypersonic weapons 9,10 . However, there are few research works on intercepting these vehicles 11 . Consequently, new technical challenges are raised to intercept these weapons and advanced guidance law is needed to provide a high interception accuracy against a hypersonic manoeuverable target 12 .…”

Section: Introductionmentioning

confidence: 99%

Fractional Calculus Guidance Algorithm in a Hypersonic Pursuit-Evasion Game

et al. 2017

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<p class="p1">Aiming at intercepting a hypersonic weapon in a hypersonic pursuit-evasion game, this paper presents a fractional calculus guidance algorithm based on a nonlinear proportional and differential guidance law. First, under the premise of without increasing the complexity degree of the guidance system against a hypersonic manoeuvering target, the principle that the differential signal of the line-of-sight rate is more sensitive to the target manoeuver than the line-of-sight rate is employed as the guidelines to design the guidance law. A nonlinear proportional and differential guidance law (NPDG) is designed by using the differential derivative of the line-of-sight rate from a nonlinear tracking differentiator. By using the differential definition of fractional calculus, on the basis of the NPDG, a fractional calculus guidance law (FCG) is proposed. According to relative motions between the interceptor and target, the guidance system stability condition with the FCG is given and quantitative values are also proposed for the parameters of the FCG. Under different target manoeuver conditions and noisy conditions, the interception accuracy and robustness of these two guidance laws are analysed. Numerical experimental results demonstrate that the proposed guidance algorithms effectively reduce the miss distance against target manoeuvers. Compared with the NPDG, a stronger robustness of the FCG is shown under noisy condition.</p>

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Algorithm of Impact Point Prediction for Intercepting Reentry Vehicles

Cited by 6 publications

References 12 publications

Bulletin of the Polish Academy of Sciences: Technical Sciences

Bulletin of the Polish Academy of Sciences: Technical Sciences

Robust Guidance Algorithm against Hypersonic Targets

Fractional Calculus Guidance Algorithm in a Hypersonic Pursuit-Evasion Game

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