脉冲雷达数字闭环BIT测试的方法研究

雷达机内测试(BIT)技术是改善雷达测试性、维修性和故障诊断能力的重要途径,其重要性已经引起了雷达系统设计者和用户的高度重视。在脉冲雷达系统中,通常BIT测试方法不能对脉冲雷达的工作性能作出准确的测试。利用真实目标回波进行在线(BIT)性能测试的方法,扩展了BIT测试范围,对真实雷达回波信号进行测试,判断雷达当前的性能状态。根据对雷达系统的分析和测试需求,提出一种数字闭环BIT方法,把系统原有的BIT故障检测功能延伸到系统性能测试。给出了系统的设计方法和测试流程,测试系统结构简单,易于实现。

Research on Digital Closed-Loop BIT in Monopulse Radar

The BIT technology in radar system is a major way to promote radar testability, maintain ability, fault detection, and diagnosis ability. Its significance has been paid attention by the designers and us- ers of radar systems. The operation performance of monopulse radar system usually can not be tested accu- rately by use of conventional BIT. The online test of BIT method using the echo signal of real target extends the range of BIT. A digital closed-loop BIT method is proposed based on the requirement of analysis and measurement for monopulse radar system. It extends the fault detection ability of BIT to the operation per formance test. The design method and test flow is presented. The structure of the test system is simple and easy to realize.