复杂环境下主导干扰来源快速诊断方法

Rapid diagnosis method of the dominant interference source in complex environment.

摘要:

随着装备系统中电子设备的频带日益加宽,功率逐渐增大,灵敏度也不断提高,各种电磁敏感设备暴露在越来越复杂的电磁环境下。尤其在宽带接收系统中,用频设备带外发射,天线旁瓣效应等因素的存在,使得即使频率规划良好、天线布局规范的系统也会存在潜在的电磁兼容问题。在多个用频设备同时干扰一个宽带接收系统时,由于电磁环境复杂,考虑因素较多,目前还没有一个从整个系统角度,针对性强,行之有效的快速诊断优化方法。本文通过拟合环境中等效噪声干扰,再还原定位到对应频段主导噪声干扰来源,使得故障定位更准确、优化措施更高效。

Abstract:

With the widening of the frequency band of the electronic equipment in the equipment system, the power gradually increases and the sensitivity is increasing. All kinds of electromagnetic sensitive equipment are exposed to more and more complex electromagnetic environment. Especially in the broadband receiving system, there are some factors such as the band off of frequency equipment and the side lobe effect of the antenna, so that even the system with good frequency planning and antenna layout will have potential EMC problems. When multiple frequency equipment interferes with a broadband receiving system, because of the complexity of the electromagnetic environment and many factors, there is not a fast and effective method of rapid diagnosis and optimization from the point of view of the whole system. In this paper, by fitting the equivalent noise interference in the environment, and then the dominant noise interference source in the corresponding frequency band is restored, so that the fault location is more accurate and the optimization measures are more efficient.