基于DCC-BiLSTM的高频地波雷达海面目标机动状态识别方法

    A Maneuvering State Recognition Method for Sea Surface Targets Based on DCC-BiLSTM Model for HFSWR

    • 摘要: 由于机动目标运动模式的复杂性和多变性,高频地波雷达在跟踪机动目标时常常存在决策延迟和跟踪模型切换滞后的问题,降低了状态估计的准确性,容易导致航迹断裂、丢失。因此,文中提出了一种基于DCC-BiLSTM的机动状态识别方法。首先,利用膨胀因果卷积网络(DCC)处理地波雷达跟踪获取的目标状态序列,利用其多尺度空间特征提取能力,有效提取不同时刻目标多个状态参数之间的关联特征,形成特征序列。然后,利用双向长短期记忆网络(BiLSTM)分析特征序列的时间变化趋势,学习目标状态趋势变化与运动模式间的隐含映射关系,实现目标机动状态的实时判别,为动态调整跟踪模型提供决策依据,实现对机动目标的有效跟踪。实验结果表明,文中方法能够及时、准确地识别出不同类型机动行为下目标的机动状态,识别准确率达到97%。

       

      Abstract: High-frequency surface wave radar faces challenges in accurately monitoring maneuvering targets due to the complexity and variability of their motion patterns. Inaccurate state estimation is often caused by decision delays and tracking model switching delays, which are typically followed by track fragmentation and loss. To address these issues, a maneuvering state discrimination method combining a dilated and causal convolution (DCC) network with a bidirectional long short-term memory (BiLSTM) network is proposed. Firstly, the DCC network is applied to the target state data sequence obtained from target tracking to capture multi-scale spatial features, which are used for identifying the correlation among various motion state parameters at different time instants. Subsequently, the obtained feature sequences are processed by the BiLSTM network to detect temporal trends and to establish mapping relations between these trends and the target′s motion patterns. Through this dual-network architecture, real-time maneuvering state discrimination is enabled, and motion models can be adaptively selected. The effectiveness of the proposed method in recognizing diverse maneuvering types is demonstrated by experimental results, with a recognition accuracy of 97% achieved.

       

    /

    返回文章
    返回