Because the radio waves hitting the north antenna are 180 degrees out of phase from the waves striking the south antenna, the processor can tell that the signal is coming from a direction parallel to the array.

• 因为南北两个阵列所接收到的讯号之间，存有180度的相位差，因此处理器可判断出，讯号是来自与阵列平行的方向。