基于DBF技术实现宽带相控阵天线抗干扰功能研究
Research on Achieving Anti-Interference of Broadband Phased Array Antenna Based on DBF

宽带相控阵天线自身实现抗干扰功能是通信相控阵天线领域发展的重要方向。而抗干扰的核心是采用数字波束形成(DBF, Digital Beam Forming)技术形成零陷。同时要抗n干扰，必须有至少n + 1个自由度，利用n + 1个子阵空间自由度进行空域自适应抗干扰处理，由于阵列空域自由度排布特殊性，因此需采用频域抗干扰与空域自适应抗干扰相结合的方法实现抗n干扰功能。文章对相控阵天线自身抗3干扰方法进行研究，通过仿真结果验证采用频域抗干扰与空域自适应抗干扰相结合的方法可实现相控阵天线自身抗3干扰。
It is the one of important directions in the field of communication phased array antennas to realize anti-jamming function through broadband phased array antennas. The core of anti-interference is to use digital beam forming (DBF) technology to form nulls. At the same time, to resist n interference, there must be at least n + 1 degrees of freedom, and use n + 1 sub-array spatial degrees of freedom for spatial adaptive anti-jamming processing. Due to the particularity of the arrangement of the array spatial freedom, a combination of frequency domain anti-jamming and spatial adaptive anti- jamming must be used to realize the anti-interference function. The anti-interference method of phased array antenna is studied in this paper, a combination of frequency domain anti-jamming and spatial adaptive anti-jamming can realize anti the 3 interference by verification of simulation results.