| 摘要 |
PURPOSE:To perform accurate waveform interpolation, with the interpolation by the average value of the advancing and delay signal with a integral multiple of phases for the pilot signal period than the said signal in place of the composite signal superimposed with noise while noise pulse are superimposed on the composite signal. CONSTITUTION:The first delay circuit 4 outputs the composite signal S(t-TD), by delaying the composite signal S(t) by the time TD corresponding to a integral multiple of MTP for the pilot signal period TP. The output of the circuit 4 is fed to the second delay circuit 5 and the composite signal S(t-2TD) is outputted with a given time TP delay. To the circuit 6, the output S(t) and the output S(t-2TD) are added and the average value [S(t)+S(t-2TD)]/2 is taken. To the switch circuit 7, the output S(t-TD) and the output of the circuit 6[S(t)+S(t-2TD)]/2 are added, and if the output of the monostable multivibrator 3 is ''0'', S(t-2TD) is outputted and when ''1'', [S(t)+S(t-2TD)]/2 is outputted. |
