直接电流注入与自由场照射之间等价性的评估

The Equivalence between Radiated Electromagnetic Fields and Direct Current Injection

介绍了直接电流注入技术在导弹EMC性能测试中的具体应用。文中一方面从理论上分析了直接电流注入技术及其模拟测试装置,评价了直接电流注入技术代替自由场照射的可行性;另一方面通过导弹自由场照射的理论计算及试验测试,评价了直接电流注入技术代替自由场照射的有效性。为导弹的高EMC安全裕度测试提供了一个简单、经济、有效的测试方法。

This paper introduces the study of Direct Current Injection（DCI） technique used in EMC-testing for missile. The ability of DCI to simulating the High Intensity Radiated field and the valid frequency range of DCI are analyzed. Direct Current Injection as a substitute for direct illumination of the missile in free space is assessed on the basis of results. DCI technique is a economical and effective method used in missile＇ s EMC-testing.