共址耦合强辐射干扰自适应宽带对消技术研究

The co-located coupling strong radiation interference (CCSRI) among antenna in platform-independent is very serious. But the bandwidth of the traditional interference cancellation system (ICS) is narrow. It is difficult to meet the requirements for suppressing the broadband interference. The project proposes a radiatio interference adaptive broadband cancellation technology (RIABCT). The main research contents include （1）to research the quantitative relationship among the interference cancellation bandwidth (ICB), the interference cancellation ratio (ICR), the numbers of the weights and the phase-shifting angle of the reference signal, and to use the constrained optimization method to determine the optimal frame of the broadband cancellation system; （2） to research the convergence characteristics of the adaptive broadband cancellation system, and to seek the digital control algorithm of the relevant value to improve the convergence speed of the broadband cancellation system; （3）to research the influence of the non-ideal factors on the adaptive broadband cancellation system, reveal the influence degree of the non ideal factors on the broadband cancellation system, seek the parameter optimization methods to inhibit that influence; （4）to research the influence of the antenna swing on the broadband cancellation system, reveal the influence degree of the antenna swing on the broadband cancellation system, seek a fast tracking optimal control method to inhibit that influence. The research achievements of the project will break through the limitation of the traditional interference cancellation system used in the situation of the broadband interference and provides a new way to solve the electromagnetic compatibility problem in the platform-independent with the strong coupling electromagnetic energy, and to make the adaptive broadband cancellation technology of the co-located coupling strong radiation interferenc obtain breakthrough and substantial progress.

独立平台天线间共址耦合强辐射干扰严重，传统干扰对消系统的对消带宽较窄，难以满足抑制宽带干扰的要求。本项目提出一种辐射干扰自适应宽带对消技术。主要研究内容为（1）研究干扰对消带宽、干扰对消比、权值数和参考信号移相角间量化关系，采用约束优化方法，确定宽带对消系统的最优架构；（2）研究自适应宽带对消系统的收敛特性，寻求提高宽带对消系统收敛速度的相关值数字控制算法；（3）研究非理想因素对自适应宽带对消系统的影响规律，揭示非理想因素对宽带对消系统的影响程度，寻求抑制该影响的参数优化方法；（4）研究天线摇摆对宽带对消系统的影响规律，揭示天线摇摆对宽带对消系统的影响程度，寻求一种抑制该影响的快速跟踪最佳控制方法。本项目的研究成果将突破传统干扰对消系统在宽带干扰应用场合的局限性，为解决独立平台电磁能量强耦合的电磁兼容性问题提供一种新思路，从而使共址耦合强辐射干扰自适应宽带对消技术获得突破性和实质性进展。

集中通信台站天线间共址耦合强辐射干扰严重，尤其是宽带干扰使传统方法难以满足抑制带宽要求。本项目研究辐射干扰自适应宽带对消技术。主要研究内容为（1）研究干扰对消带宽、干扰对消比、权值数和参考信号移相角间量化关系，采用约束优化方法，确定宽带对消系统的最优架构；（2）研究自适应宽带对消系统的收敛特性，寻求提高宽带对消系统收敛速度的相关值数字控制算法；（3）研究非理想因素对自适应宽带对消系统的影响规律，揭示非理想因素对宽带对消系统的影响程度，寻求抑制该影响的参数优化方法；（4）研究天线摇摆对宽带对消系统的影响规律，揭示天线摇摆对宽带对消系统的影响程度，寻求一种抑制该影响的快速跟踪最佳控制方法。针对上述研究内容，取得如下主要研究成果：（1）双通道自适应对消系统宽带干扰对消特性及参数优化方法；（2）移相多通带对消系统宽带干扰对消特性；（3）抽头多通道对消系统宽带干扰对消性能及快速收敛方法；（4）级联三通道鲁棒宽带干扰对消系统干扰对消性能、参数优化及快速收敛方法；（5）双通道级联辅助通道对消系统宽带干扰对消特性、参数优化及快速收敛方法；（6）非理性因素对典型多通道对消系统性能的影响及其抑制方法。本课题的研究为解决独立平台电磁能量强耦合的宽带干扰抑制问题提供了一种新的思路，并为该项技术的实用化提供了理论基础和技术支撑。