With the intensive and large scale application of IETM in equipment integrated support, information retrieval technology becomes one of the most key technologies. This article discusses the full-text search technology and Lucene full-text retrieval engine, and combines them to develop a highperformance scalable IETM full-text retrieval system, this system can effectively deal with IETM unstructured data and structured data, significantly improving search efficiency and it is convenient to extend and easy to maintain. First, it briefly introduces information retrieval theory, and discusses the information retrieval requirement in IETM. Then, it thoroughly surveys the Lucene full-text retrieval engine, including its framework, retrieval process and index mechanism. Next this paper designs Lucene based IETM information retrieval process. Finally, the realization of Lucene based IETM information retrieval function.

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Abstract. The use of machine vision to track the receiver aircraft's receptacle is one of the key steps in automated aerial refueling. Traditional Meanshift tracking algorithm's kernel bandwidth is fixed, when the target size changes, it will produce with the bias even with the loss of the situation. Aiming at this problem, this paper proposes a kernel bandwidth adaptive algorithm based on corner matching. First, use backward tracking method to amend the core window center. Then according to the Harris algorithm to detect the corner, use small-scale approach for the two points between frames to match and regression analysis, namely determine the update parameters of nuclear window width. Experiments show that the algorithm can track the target accurately when the size of tracking target change, and the kernel window width can be better suited to the target size.

Abstract:Based on the analysis of equipment logistic support, this paper puts forward equipment integrated support business connotation. And it suggests that all-life-cycle equipment logistic support information starts from management without paper. Then we gradually establish digital platform for equipment logistic support, and construct integrated data environment to realize digitization, automation, networking and integration of all-life-cycle equipment information. This paper proposes an information framework of all-life-cycle equipment logistic support to achieve the equipment logistic support information goal. Then key information techniques are analyzed to realization equipment logistic support information.