Abstract: Mobicast，a novel multicast routing protocol，is very suitable for Wireless Sensor Tracing Networks（WSTNs）.But some corresponding improvements will also be required for the multi-objective monitor.A self-perceive clustering mechanism scheme Mobicast-based，which can adjust the clustering strategy dynamically according to the networks topology and targets’ situation to prevent from the overlap and interference between clusters，is presented for maximizing the network performance and multicast efficiency.The main contributions of the approach are summarized as follows：⑴ determining the number and state of monitoring objectives，and selecting the clustering strategy through self-perception clustering algorithm；⑵ evaluating dynamically the current topology and capability of nodes in order to update the clustering strategy.The simulation results indicate that this scheme can monitor the multi-objective more accurately compared to their real route.

Key words: dynamic clustering, multi-objective, multicast, Wireless Sensor Tracing Networks（WSTNs）

摘要： Mobicast是一种非常适合无线传感器追踪网（Wireless Sensor Tracing Networks，WSTNs）的新型组播路由协议，但对于多目标监测时还需相应改善。在Mobicast的基础上提出了一种自感知分簇机制，根据网络实时拓扑和目标状态的改变动态调整分簇策略，以防止组播簇重叠和干扰，最大限度地提高监控精度和网络性能。方案主要贡献在于：通过自感知分簇算法，判断监测目标个数和运动状态，确定分簇策略；动态评估节点拓扑结构和性能状况，以便及时更新分簇策略。仿真结果表明，方案能够较准确地对多目标实施追踪监控。

关键词: 动态分簇, 多目标, 组播, 无线传感器追踪网络