舰船通信系统的无源互调研究

在介绍无源互调（PIM）产生机理的基础上，分析了舰船通信系统的PIM现状及基本测试方法．从系统设计的角度出发，介绍了降低无源互调干（PIMI）的一些方法。结合工程实践，给出了舰载超短玻通信系统无源互调分析示例，这将有助于系统工程师预测系统设计性能，控制技术风险，进一步降低PIMI的影响。随着涉及舰船通信的无源互调相关技术规范的逐步推出，密集电磁环境下的PIMI将得以有效控制。

Approach to Passive Intermodulation in Ship Communication System

Based on the mechanism introduction of passive intermodulation （PIM）, PIM status in quo and basic test method for shipcommunication systems are analyzed. Proceeding from the system design, some methods to reduce the passive intermodulation interference （PIMI） are introduced. In combination with engineering practice, an illustration of analyzing PIM of ship-based ultrashort wave communication system is presented. It is conducive to the system engineers to predict the system performance, control the risk of technique and further reduce the influence of PIMI. With the gradual detrusion of the relevant technical regulations of PIM for the ship communication, the PIMI in dense electromagnetic environment will be controlled effectively.