Active Defense Line-of-Sight Guidance Law with Compensation of Unknown Disturbance for the Cooperation of Aircraft and Interceptor

doi:10.3969/j.issn.1009-086x.2024.02.011

Abstract

Abstract:

With the development of unmanned military technology， unmanned short-range air combat has attracted much attention from military powers in the world. Faced with the threat of high-speed and high-maneuverability attacker missiles， traditional passive defense measures such as throwing chaffs or releasing hot flame bombs fail to ensure the safe escape of target aircraft. It is a feasible method to implement active defense by launching defender missiles to coordinate the maneuvering of target aircraft. However， due to the strong maneuverability of the attacker missile and unknown acceleration information， it is difficult to design the guidance law of cooperative target aircraft-missile. An active defense line-of-sight （LOS） guidance law based on disturbance compensation was proposed in this paper. A nonlinear disturbance observer was designed to estimate the influence of the maneuverability from the attacker missile， which was compensated for in the design of active defense LOS guidance law for the cooperation of aircraft and missile. The results of the simulation indicate that the method used in this paper can effectively defend the attacker missile with unknown maneuverability. The study in this paper thus provides a reference for the three-body attack and defense problem.

Key words: cooperation guidance, lien-of-sight（LOS）, disturbance observer, active defense, three-body interception, guidance strategy

摘要：

随着无人技术和军事科技发展，无人近距空战引起了世界军事强国的广泛关注。面临高速大机动能力来袭导弹的威胁，传统的抛洒箔条或释放热焰弹等被动防御措施无法确保目标飞行器安全逃逸，通过发射拦截弹协同目标飞行器机动实施的主动防御是一种可行的方法。由于来袭导弹机动能力较强且加速度信息未知，是目标飞行器-拦截弹制导律协同设计的难点。提出一种基于扰动补偿的LOS主动防御拦截制导律，通过设计一种非线性扰动观测器来估计来袭弹产生的机动的影响，并在机弹协同LOS主动防御制导律设计中补偿。通过仿真算例验证了所提方法能够有效拦截具有未知机动能力的来袭导弹,为研究三体攻防问题提供了一定的参考。

关键词: 机弹协同, LOS制导, 扰动观测器, 主动防御, 三体博弈, 制导策略

CLC Number:

Jie WANG, Junhui LIU, Hao CHEN, Qi ZHAO, Wei LIU. Active Defense Line-of-Sight Guidance Law with Compensation of Unknown Disturbance for the Cooperation of Aircraft and Interceptor[J]. Modern Defense Technology, 2024, 52(2): 94-103.

王捷, 刘俊辉, 陈昊, 赵琦, 刘维. 一种基于扰动补偿的机弹协同LOS主动防御制导律[J]. 现代防御技术, 2024, 52(2): 94-103.

Figures/Tables 10

Fig. 1 Relative relationship among target， defender missile and attacker missile

Table 1 Simulation parameters

参数	数值	参数	数值	参数	数值	参数	数值
$v T$ / （m·s^-1）	200	$γ T$ /（°）	0	$v D$ / （m·s^-1）	400	$γ D$ /（°）	0
$v A$ / （m·s^-1）	500	$γ A$ /（°）	170	$x T$ /m	0	$y T$ /m	0
$x D$ /m	0	$y D$ /m	0	$x A$ /m	5 000	$y A$ /m	0
$k λ$	0.5	$k A$	5.0	$k e$	5.0	$l Λ$	15
$r c$ /m	5	$ϵ$	0.5

Table 1 Simulation parameters

参数	数值	参数	数值	参数	数值	参数	数值
$v T$ / （m·s^-1）	200	$γ T$ /（°）	0	$v D$ / （m·s^-1）	400	$γ D$ /（°）	0
$v A$ / （m·s^-1）	500	$γ A$ /（°）	170	$x T$ /m	0	$y T$ /m	0
$x D$ /m	0	$y D$ /m	0	$x A$ /m	5 000	$y A$ /m	0
$k λ$	0.5	$k A$	5.0	$k e$	5.0	$l Λ$	15
$r c$ /m	5	$ϵ$	0.5

Fig. 2 Trajectories of the target and the attacker missile when the defender missile is no used.

Fig. 3 Overload of the target

Table 2 Results of the miss distance

协同因子	脱靶量/m	协同因子	脱靶量/m
$ϖ = 0$	0.078	$ϖ = 1$	1.631
$ϖ = 0.5$	0.071	$ϖ = ϖ *$	0.073

Table 2 Results of the miss distance

协同因子	脱靶量/m	协同因子	脱靶量/m
$ϖ = 0$	0.078	$ϖ = 1$	1.631
$ϖ = 0.5$	0.071	$ϖ = ϖ *$	0.073

Fig. 4 Comparison of different guidance strategies

Fig. 5 Comparison of the overload using different strategies

Fig. 6 Optimal weight parameter and the corresponding performance index

Fig. 7 Trajectory and the overload of the attacker missile

Fig. 8 Angular error and the estimation of the unknown disturbance

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