非平稳异常噪声条件下的扩展目标跟踪方法

陈辉; 张欣雨; 连峰; 韩崇昭; 张光华

doi:10.11999/JEIT240824

非平稳异常噪声条件下的扩展目标跟踪方法

doi: 10.11999/JEIT240824

1.
兰州理工大学电气工程与信息工程学院兰州 730050
2.
西安交通大学自动化科学与工程学院西安 710049

基金项目: 国家自然科学基金(62163023, 61873116, 62366031, 62363023)，甘肃省基础研究创新群体(25JRRA058)，中央引导地方科技发展资金项目(25ZYJA040)，甘肃省重点人才项目(2024RCXM86)，甘肃省军民融合发展专项资金

详细信息

作者简介:
陈辉：男，教授，博士生导师，研究方向为多目标跟踪、数据融合、最优控制等

张欣雨：女，硕士生，研究方向为扩展目标跟踪和最优滤波技术

连峰：男，教授，博士生导师，研究方向为目标跟踪、信息融合与传感器管理

韩崇昭：男，教授，博士生导师，研究方向为多源信息融合、随机控制与自适应控制、非线性频谱分析等

张光华：男，副教授，博士生导师，研究方向为多源信息融合、目标跟踪、传感器管理

通讯作者:
陈辉　huich78@hotmail.com

中图分类号: TN911.7; TP274
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- 被引次数: 0
出版历程
- 收稿日期: 2024-09-27
- 修回日期: 2025-02-23
- 网络出版日期: 2025-03-01
- 刊出日期: 2025-03-01

Extended Target Tracking Method under Non-stationary Abnormal Noise Conditions

1.
School of electrical engineering and Information Engineering, Lanzhou University of Technology, Lanzhou 730050, China
2.
School of Automation Science and Engineering, Xi’an Jiaotong University, Xi’an 710049, China

Funds: The National Natural Science Foundation of China (62163023, 61873116, 62366031, 62363023), Gansu Provincial Basic Research Innovation Group of China (25JRRA058), The Central Government’s Funds for Guiding Local Science and Technology Development of China (25ZYJA040), Gansu Provincial Key Talent Project of China (2024RCXM86), Gansu Provincial Special Fund for Military-Civilian Integration Development of China

摘要

摘要: 针对非平稳异常噪声环境下扩展目标跟踪问题，该文提出一种基于高斯-学生t混合(GSTM)扩展目标跟踪方法。首先，将过程噪声和量测噪声建模为GSTM分布，以表征非平稳厚尾噪声，并通过引入伯努利随机变量，将目标的运动状态和量测似然函数建模为分层高斯形式。其次，在随机矩阵(RMM)滤波框架下，使用变分贝叶斯方法详细推导了非平稳厚尾噪声下的GSTM扩展目标跟踪算法。该算法通过建模高斯噪声与厚尾噪声之间的非平稳过程，精确表征噪声特性，从而在非平稳异常噪声环境下稳健捕捉扩展目标的质心位置和轮廓形态。最后，构建非平稳异常噪声环境下的扩展目标跟踪仿真实验，并通过高斯-瓦瑟斯坦距离对实验结果进行效果评估，验证了所提出算法的合理性。此外，真实场景实验结果进一步证明了该算法在实际应用中的有效性和鲁棒性。
- 扩展目标跟踪 /
- 随机矩阵 /
- 高斯-学生t混合分布 /
- 变分贝叶斯方法
Abstract: Objective This paper addresses the problem of extended target tracking in the presence of non-stationary abnormal noise. Traditional Gaussian extended target filters and Student’s t filters rely on the assumption of stationary noise distributions, which limits their performance in environments with non-stationary abnormal noise. Non-stationary noise, common in practical applications, is especially prevalent in complex environments where the noise frequently shifts between Gaussian and heavy-tailed distributions. To overcome this challenge, a Gaussian-Student’s t Mixture (GSTM) distribution is proposed for modeling non-stationary abnormal noise in extended target tracking. The GSTM distribution is used to model the noise accurately, and a filter is developed to track the target’s kinematic state and shape effectively under non-stationary measurement and process noise conditions. This method is shown to be robust in complex environments, offering enhanced accuracy, robustness, and applicability for extended target tracking. Methods The GSTM distribution is employed to model both process and measurement noise, enabling dynamic adjustment of mixture parameters to capture the evolving characteristics of noise distributions in non-stationary environments. To optimize computation, Bernoulli random variables are introduced, and the target’s one-step prediction and measurement likelihood functions are reformulated as a hierarchical Gaussian model based on the GSTM distribution. This approach facilitates adaptive switching between Gaussian and Student’s t distributions, streamlining the inference process and simplifying posterior computation, which reduces the complexity of parameter estimation. Within the Random Matrix Model (RMM) framework, Variational Bayesian (VB) inference is applied to jointly estimate the target’s kinematic state, extension state, mixture parameters, and noise characteristics. During the filtering update phase, a dynamic adjustment mechanism is introduced for the one-step prediction error covariance matrix and observation noise covariance matrix, ensuring the model to maintain robustness and adaptability in complex, non-stationary noise environments. Results and Discussions The introduction of the GSTM distribution for modeling non-stationary abnormal noise enables robust tracking of both the centroid and shape contour of extended targets in such environments. Theoretical derivations and experimental validations confirm the effectiveness of the proposed method for single extended target tracking under non-stationary noise conditions. Simulation and real-world results demonstrate significant performance advantages. First, in terms of tracking accuracy, the proposed algorithm achieves a notably lower Root Mean Square Error (RMSE) for centroid tracking compared to other algorithms (Fig. 2, Fig. 6), effectively adapting to dynamic changes in non-stationary noise, and offering superior accuracy and stability. Second, for adaptive estimation of target shape, the algorithm shows considerable improvements in non-stationary noise environments, providing more accurate contour estimation (Fig. 3, Fig. 7). It also maintains high robustness under evolving target shapes. Moreover, the algorithm exhibits faster convergence and greater stability in complex environments (Fig. 2, Fig. 4), with a significantly lower Gaussian Wasserstein Distance (GWD) mean compared to other methods (Fig. 4, Fig. 8). In practical experiments, a vehicle operated in environments with obstacles like tree branches, where the noise is non-stationary, further validated the algorithm’s performance. Under these conditions, the proposed algorithm demonstrated exceptional stability and robustness throughout the tracking process (Fig. 9), outperforming other algorithms and highlighting its adaptability and reliability in complex dynamic environments. Conclusions This paper proposes an extended target tracking method based on the GSTM distribution, overcoming the limitations of traditional algorithms in adapting to non-stationary anomalous noise environments. The GSTM distribution is used for noise modeling, combined with the RMM framework, and the VB method along with hierarchical Gaussian modeling simplifies the computational process, enhancing the algorithm’s adaptability and robustness. Experimental results across shape-invariant, shape-evolving, and real-world scenarios demonstrate the following: (1) The proposed algorithm significantly outperforms existing methods in robustness, particularly in centroid tracking and shape estimation. (2) The noise model is adaptively adjusted under non-stationary noise and dynamic target evolution, enabling high-precision tracking of extended targets. (3) In complex real-world scenarios, the algorithm successfully tracks small vehicles, further validating its effectiveness in practical applications. Future research could explore integrating multi-target tracking theories, extending the algorithm to multi-extended target tracking scenarios, and addressing more complex environmental challenges to further enhance its practicality and performance in multi-target settings.
- Extended target tracking /
- Random matrix /
- Gaussian-Student’s t Mixture (GSTM) distribution /
- Variational Bayesian (VB) method

HTML全文

图 1 扩展目标轨迹跟踪图

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图 2 目标质心跟踪误差

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图 3 不同阶段的轮廓放大图

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图 4 椭圆扩展目标GWD

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图 5 扩展目标轨迹跟踪图

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图 6 目标质心跟踪误差

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图 7 不同阶段的轮廓放大图

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图 8 椭圆扩展目标GWD

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图 9 不同时刻效果图

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