【作者】 孙萍；

【导师】 刁鸣；

【作者基本信息】 哈尔滨工程大学 ， 通信与信息系统， 2007， 硕士

【摘要】 随着现代雷达的发展，雷达功能不断增强，系统的复杂性不断提高，这对雷达系统的可靠性，可维护性和可操作性等技术指标提出了更高的要求。在雷达的研制过程中，对于可靠性可以采用一些有效的技术来提高，但由于元器件老化失效、外部环境劣化等各种因素的限制，可靠性不可能无限制地提高。作为雷达系统研制的一种优化方案，在雷达系统可靠性一定的前提下适当增加可靠的冗余设备和检测设备，以便提高雷达的可靠性和可维护性，为此，现代雷达中就提出了机内检测系统，这是根据长期的经验提出的。随着技术的不断发展，对雷达的BIT(机内测试，Built In Test)要求越来越高，因此，雷达系统的使用方和研制方都必须在研制初期就进行故障检测和性能检测的论证和设计。本文首先对雷达设备的可靠性及状态监测方面进行了探索，主要阐述了机内测试BIT系统的实现结构及其基于故障树算法实现故障定位的原理。同时针对雷达设备的网络环境利用Winpcap(Windows Packet Capture)实现了实时监测，并对其内部数据进行分析，实现了故障定位的功能，并且提出了解决方案。更多还原

【Abstract】 Along with the development of the modern radar, the function of radar has been continually enhanced and the complexity of systems has been improved. The more demand has been brought forward for the technological index of radar system such as reliability, maintainability and maneuverability. In the development process of radar, we can adopt some efficient technology to improve the reliability. But it can not be improved without limit because of many factors such as component’s aging and invalidation, exterior circumstance deterioration. As an optimal scheme of the radar system development, we can properly increase the reliable redundant equipment and detection equipment to improve the radar’s reliability and maintainability on the premise of a certain reliability of radar system. So the modern radar has been brought forward the build-in test system which is based on the long-term experience. The requirement for BIT of radar is more and more highly with the technology development. So the user and the developer of radar system must demonstrate and design the fault and capability detection during the early period of radar development.This paper firstly explore the reliability and state monitoring of radar system, which mainly elaborate the realizable structure of BIT system and theory of failure location based on the fault tree arithmetic. We also used the Winpcap to realize the real-time monitoring as toward to the network environment of radar system, analyzed the interior data, realized the failure location and the presented the solution.更多还原