Method and system for correcting DBF phased-array antenna

• Main Authors: ZHANG JIE, MA CHAO, LU FAN, SHI HAIRAN, JIANG TAO, DONG SHILIN, XUE XIN, DU HAILONG, ZHI GUOPING, FAN ZHANCHUN
• Format: Patent
• Language: Chinese; English
• Published: 07.12.2021
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION

The invention discloses a method and system for correcting DBF phased-array antenna, wherein the method comprises the steps of employing a multi-channel and multi-frequency DDS signal generator as a DBF phased-array correction signal source through employing a radio frequency narrowband characteristic and a characteristic that the frequency of each channel of a DBF phased-array antenna is adjustable, and setting the transmission frequency and phase synchronization of the multi-channel DDS signal generator, so that the channel data sampled by the receiving unit is directly corrected, accurate phase detection and synchronization are not needed. The algorithm is simple and easy to implement, the system error is small, the correction algorithm is convenient to implement, meanwhile, additional hardware does not need to be added, the system is simple, and engineering implementation is easy. 本发明公开了一种DBF相控阵天线的校正方法及系统，利用射频窄带特性和DBF相控阵天线各通道频率可调的特性，通过采用多通道多频率的DDS信号发生器作为DBF相控阵校正信号源，并设置多通道DDS信号发生器的发射频率及相位同步的方式，实现了直接对接收单元采样