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自适应天线技术在通信中的应用主要包括LMS阵及Applebaum阵两种,这两种阵的工程应用均要求有用信号的先验知识,如不能满足则不能应用。本文在原来的Applebaum阵基础上提出了一种修正的Applebaum阵,这种阵在不需要有用信号先验知识的条件下而能实现空域滤波.根据此原理完成了短波段二元阵自适应天线通信实验作机的研制,在实验室模拟条件下对调幅信号在载频相同,电平相同而来向不同的情况下实现全频段干扰抑制比平均为20dB以上.
The application of adaptive antenna technology in communication mainly includes LMS array and Applebaum array. Both engineering applications require prior knowledge of useful signals, and can not be applied if they can not be met. In this paper, a modified Applebaum matrix is proposed based on the original Applebaum matrix, which can achieve spatial filtering without the prior knowledge of useful signals. According to this principle, the experiment of shortwave binary array adaptive antenna communication experiment was completed. Under the condition of laboratory simulation, the full-band interference rejection ratio was achieved for the amplitude modulation signals under the same carrier frequency and same level Average more than 20dB.