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新型雷达强大的功能需要多种工作模式来支撑,而多模式系统的故障特性、诊断测试等与工作模式紧密关联。文中针对新型雷达多模式系统测试性工程设计的需求,提出了一种系统级机内测试(BIT)优化设计的技术方法。该方法基于系统工作模式,结合系统性能测试设置系统级测试项目,并通过对测试资源的优化,确定系统BIT故障检测项目和故障隔离逻辑,实现系统BIT性能的提升。同时借助构建雷达测试性模型,仿真系统BIT优化设计过程,验证了该方法可明显提高系统的故障检测率和故障隔离率。该项技术已经在一种新型雷达BIT工程设计中得到成功应用。
The powerful features of the new radar need a variety of work patterns to support, and multi-mode system fault characteristics, diagnostic tests closely associated with the work patterns. In order to meet the requirements of the test engineering design of multi-mode radar system, a method of system-level optimization (BIT) optimization design is proposed. The method sets system-level test items based on system working mode and system performance test, and optimizes test resources to determine system BIT fault detection items and fault isolation logic to improve system BIT performance. At the same time, with the aid of the radar test model, the BIT optimization design process of the simulation system was verified, which verified that this method can obviously improve the system fault detection rate and fault isolation rate. This technology has been successfully used in a new radar BIT engineering design.