根据同频相关原理设计了一种矢量信号检测电路，该电路用模拟电路和数字电路实现了被测正弦信号与同频正弦、余弦函数间的互相关，能够检测出和基准信号同频的信号振幅和相位，并给出了实验测试结果。%Based on the correlation analysis,a kind of detect circuit is designed.The circuit realizes the measurement of the sine signal with the same frequency of the basis signal.It can measure the amplitude and phase of the signal .The experiment test results has been given in the paper.
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