基于定向擴散和移動代理的無線傳感器網(wǎng)時空信息集成框架研究

楊少軍; 史浩山; 黃睿

基于定向擴散和移動代理的無線傳感器網(wǎng)時空信息集成框架研究

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出版歷程
- 收稿日期: 2004-06-10
- 修回日期: 2005-03-22
- 刊出日期: 2005-12-19

Study of Spatio-Temporal Information Integration Framework Based on Directed Diffusion and Mobile-Agent for Wireless Sensor Networks

摘要

摘要: 無線傳感器網(wǎng)絡(luò)的有效節(jié)點分布往往是時空變化的，要求提供及時、可靠和高效的信息處理技術(shù)。提出一種基于Directed Diffusion和移動代理的時空信息集成框架。通過觀測節(jié)點的興趣泛洪和傳感節(jié)點的目標(biāo)檢測信令泛洪，建立觀測節(jié)點和有效節(jié)點間的雙向梯度；目標(biāo)檢測信令在觀測節(jié)點上觸發(fā)的時間延遲窗生成節(jié)拍，在節(jié)拍中完成移動代理初始化和訪問路徑規(guī)劃，其中節(jié)拍是空域信息集成的時間點，節(jié)拍序列則構(gòu)成時域信息集成的時間軸；移動代理攜帶集成算法執(zhí)行訪問路徑，完成時域和空域的信息集成。分析討論了框架性能的關(guān)鍵參數(shù)，并通過飛機模型的二值圖像識別仿真實驗，證明了框架的有效性。
- 無線傳感器網(wǎng)絡(luò);時空信息集成;定向擴散;移動代理
Abstract: In wireless sensor networks, the nodes with valued information are usually space-time varying. This paper presents a framework for spatio-temporal information integration based on directed diffusion and mobile agent. In the framework, the bi-direction gradients are constructed by the flood of the observers interest and the sensors Object Detected Signal (ODS). ODSs are collected and analyzed to program the visiting itineraries for mobile agents during a rhythm which is a period of time triggered by an ODS message, the space-time integration is completed by mobile agents with fusion algorithms accessing the nodes on the path. A rhythm acts as a label for spatial processing, and thus the series of rhythms become a time axis for temporal integration. In addition, the relations among some key parameters of framework are discussed. Finally, results based on experiments of collaborative target recognition demonstrate the effectiveness of the proposed framework.

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參考文獻(1)

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