虚拟仪器在天气雷达发射系统测试中的应用

Application of virtual instrument in the test of weather radar transmitter system

天气雷达发射系统测试是雷达性能测试中的重要组成部分,发射系统的功率、脉冲包络和频谱等参数指标的好坏直接影响到雷达的正常工作。为了准确快速的掌握雷达发射系统的主要参数指标状态,借助虚拟仪器在自动测试中的优势,并以雷达发射系统的脉冲包络参数测试流程为例,通过设计程序控制测试仪器自动完成关键参数的测试工作,能够解决传统仪器仪表测试中存在的操作复杂、效率低下、误差大等问题,同时系统具有界面友好、操作简单、扩展性好等特点。根据天气雷达发射系统主要参数的数学模型分析测试结果,通过LabVIEW软件控制PXI架构的硬件测试电路,不仅能够实现雷达发射系统主要性能参数的测试,而且可以将测试结果保存在数据库中,方便对测试结果的存储和调用。

The weather radar transmitter system test is an important part of radar performance test, and the parameters such as power, pulse envelope and spectrum of the transmitter system can affect radar normal work of directly. In order to master the main parameters of radar transmitter system accurately and quickly, taking the advantages of virtual instru- ment in the automatic test, and using the test of radar pulse envelope as an example, then through the design program control test instrument to complete the test work of the key parameters automatically, it can solve the problems such as operation complex, low efficiency and large error brought by traditional instruments. At the same time, the test system is interface friendly, operation simple and expansibility well. Based on the analysis of mathematical models of radar transmitter and existed test methods, controlling the PXI hardware test circuit by LahVIEW, we can not only test the main performance parameters of the radar transmitter system, but also store the test results in a database to facilitate storage and invocation.