雷达罩坡度估计的数据驱动可观测性分析和增强,同时对撞击角和终端加速度进行约束

IF 1.4 4区 管理学 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC
Bingyu Jin, Kelin Lu, Yuping Lu
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引用次数: 0

摘要

作者解决了装有捆绑式寻的导弹的可观测性分析和增强问题,特别是考虑到仅视线角测量以及对撞击角和末端加速度的约束。首先,基于广义多项式混沌展开,提出了一种新颖的数据驱动可观测性分析方法,对雷达罩像差估计系统的可观测性进行实时定量分析,包括可观测性条件、各状态的可观测性程度以及随机噪声的影响。结果表明,在传统的比例导航制导下,雷达罩像差估计系统的可观测性很弱,只能进行视线角测量。为解决这一问题,引入了一种新的机动算法--观测能力增强制导法则,以在特定约束条件下增强系统的可观测性,从而提高估计性能。该制导法则包含一个偏置项,以满足终端约束条件,并利用提出的可观测性指数优化导航增益。通过仿真验证了所提出的制导法则与目标状态估计器相结合的性能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Data-driven observability analysis and enhancement for radome slope estimation with constraints on impact angle and terminal acceleration

Data-driven observability analysis and enhancement for radome slope estimation with constraints on impact angle and terminal acceleration

The authors address the problem of observability analysis and enhancement for missiles equipped with strapdown seekers, especially considering the line-of-sight angle-only measurements and the constraints on impact angle and terminal acceleration. First, based on the generalised polynomial chaos expansion, a novel data-driven observability analysis method is proposed to quantitatively analyse the observability of the radome aberration estimation system in real time, including the observability condition, the observability degree of each state and the effect of stochastic noises. The results show that under conventional proportional navigation guidance, the radome aberration estimation system is weakly observable with line-of-sight angle-only measurements. To address this problem, a novel manoeuvre algorithm, the observability-enhanced guidance law, is introduced to enhance the system observability within specified constraints, thereby improving the estimation performance. This guidance law incorporates a bias term to meet terminal constraints, and optimises the navigation gain using the proposed observability indices. Simulations are conducted to verify the performance of the proposed guidance law in conjunction with a target state estimator.

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来源期刊
Iet Radar Sonar and Navigation
Iet Radar Sonar and Navigation 工程技术-电信学
CiteScore
4.10
自引率
11.80%
发文量
137
审稿时长
3.4 months
期刊介绍: IET Radar, Sonar & Navigation covers the theory and practice of systems and signals for radar, sonar, radiolocation, navigation, and surveillance purposes, in aerospace and terrestrial applications. Examples include advances in waveform design, clutter and detection, electronic warfare, adaptive array and superresolution methods, tracking algorithms, synthetic aperture, and target recognition techniques.
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