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首页> 外文期刊>IEEE Transactions on Aerospace and Electronic Systems >Motion-parameter estimation for precession-with-nutation space targets based on wideband radar measurements
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Motion-parameter estimation for precession-with-nutation space targets based on wideband radar measurements

机译：基于宽带雷达测量的带旋进差空间目标的运动参数估计

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摘要

Nutation and precession parameter estimation is of great importance for attitude estimation of spin-stabilized space targets. In this paper, we propose a novel method to estimate the nutation and precession parameters of a rigid-body object from the one-dimensional high-resolution radial-range measurements. First, we elaborately derive the kinematic equations and one-dimensional radial-projection model of the precession-with-nutation object, where fixed-point and slipping scatterers are separately taken into account. Second, by using the radial-range trajectories of multiple scatterers, we employ the factorization-based algorithm to obtain the motion reconstruction. Third, we estimate the nutation and precession parameters based on the reconstructed motion and the spectrum analysis of the associated trajectories. Moreover, the l1-norm-based one-dimensional trajectory-recovering technique is developed to deal with the incomplete radial-range trajectories caused by the shadowing effect, specularity, and so on. Finally, experiments are carried out on the electromagnetic analysis data to verify the proposed model and parameter-estimation method.
机译：旋进和进动参数估计对于自旋稳定空间目标的姿态估计非常重要。在本文中，我们提出了一种从一维高分辨率径向范围测量值估计刚体对象的运动参数和进动参数的新方法。首先，我们详细推导了带有旋进差的物体的运动方程和一维径向投影模型，其中分别考虑了定点散射和滑动散射。其次，通过使用多个散射体的径向范围轨迹，我们采用基于分解的算法来获得运动重建。第三，我们基于重构的运动和相关轨迹的频谱分析来估计章动和进动参数。此外，开发了基于l1-范数的一维轨迹恢复技术来处理由阴影效应，镜面反射等导致的不完整的径向范围轨迹。最后，对电磁分析数据进行了实验，以验证所提出的模型和参数估计方法。

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