Some test and control programs for the DBF system are finished.
依据系统要求，完成DBF接收阵系统的各项测试程序和总控程序；
Digital beam forming (DBF) is special for phased array ultrasonic transducer compared to other ultrasonic nondestructive testing and is also the kernel technology of the whole signal-receiving system.
数字波束合成技术是相控阵超声检测相对于其它超声检测所特有的，也是整个信号接收处理系统的核心技术。
From the point of view of 2-d DBF phased array radar, this paper discusses the influence of channel errors on the system performance and the method for channel balance.
本文针对两维d BF相控阵雷达，探讨窄带情况下通道误差对系统的影响和通道均衡的方法。
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