机载射频传感器主动电磁兼容方法研究  

The Active EMC Method Research of Airborne RF Sensor System

作　　者：贾朝文[1] 杨启伦 高沉[1] Jia Chaowen;Yang Qilun;Gao Chen

机构地区：[1]中国电子科技集团公司第二十九研究所

出　　处：《安全与电磁兼容》2023年第5期33-37,共5页Safety & EMC

摘　　要：机载射频传感器系统作战能力越来越高,而各传感器电子设备高度集成且在载机的有限空间安装。由于各传感器灵敏度高,发射功率大且发射频带宽,各电子设备内部及相互间的电磁传导、辐射等电磁兼容问题需要精心设计,电磁兼容措施有效性直接关系到机载传感器系统的研制成败。文章对传感器内部电磁兼容需求及设计进行了总结,重点针对传感器间同时发射接收的自适应对消主动电磁兼容技术进行了研究,采用基于动量梯度下降算法,综合当前梯度估计和历史估计实现梯度更新,提升了收敛速度,并实现对本机宽带发射信号优于55 dBc的对消比,实现传感器间发射和接收功能的真正同时工作,该技术可支持载机边探测、边攻击、边防御、边通信的能力,对机载射频传感器系统具有非常重要的意义。The combat capability of airborne RF sensor system is more and more powerful,electronic equipment of sensors is highly integrated and installed in airborne limited space.Owing that each sensor has high sensitivity,powerful emission-power and wide emission-bandwidth,difficult electromagnetic compatibity(EMC)problem needs to be designed carefully,such as electromagnetic transmitting,radiating and so on within or among electronic equipment,and the EMC capability directly affects the success of the airborne sensor system.The EMC requirement and designing within sensors are summarized in this paper,particularly,the active EMC technology of cancellation of self-adaption is emphatically introduced to realize emitting and receiving simultaneously,where the momentum gradient descent algorithm is adopted.In the algorithm,the current and historical gradient estimation are integrated to update the gradient,so as to improve the convergence speed,and it can achieve 55 dBc cancellation ratio to the wideband emitting signal of aircraft to realize real simultaneous work between sensors.The technology can support aircraft detecting while attacking and defending and communicating,which has very important meaning for airborne RF sensor system.

关 键 词：机载射频传感器系统 主动电磁兼容 自适应对消 收发同时工作 动量梯度下降算法 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置] TN03[自动化与计算机技术—控制科学与工程] V271.41[电子电信—物理电子学]