| 摘要 |
PURPOSE:To provide a correlation processing circuit which is capable obtaining a correlation of a long time by using an existing correlation element. CONSTITUTION:A delay line 5-1 and a delay line 5-2 are serially connected to the second input side of a convolver 3-1 and the first input side of a convolver 3-2, respectively, and the pair of the convolver 3-1 and the delay line 5-1 and the pair of the delay line 5-2 and the convolver 3-2 have a parallel relationship. An input signal e1 (t) and an input signal e2 (t) are added to the first input of the convolver 3-1 and the second input, respectively, via a delay line 5-1 delayed by the time T. In the first input of the convolver 3-2, the input signal e1 (t) is added via the delay line 5-2 delay by the time T, and in the second input, the input signal e2 (t) is added. Respective correlation outputs E1, E2 of convolvers 3-1, 3-2 are added in an addition circuit 6 and the added one is outputted as the whole correlation output E. |
