| 摘要 |
A method comprises the step of obtaining a first signal of the signal from a first position of a transmission channel, and a second signal of the signal from a second position of the transmission channel, determining a delay time between the first signal and the second signal by a first degree of alikeness of the first signal and the second signal trace, and determining a direction function vector of the signal by a second degree of alikeness of the first signal and the second signal trace.
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