Multi-channel AD sampling time difference synchronization method and synchronization system

The invention discloses a multi-channel AD sampling time difference synchronization method and synchronization system. The method comprises the following steps: for n sampling channels, respectively marking as C1, C2...Cn, orderly performing sampling according to the predetermined order C1, C2...Cn to obtain a sequential sequence [P1, P2,...Pn], orderly performing sampling according to a reversedorder Cn, C(n-1), ...C1 to obtain a reversed sequence [N1, N1,...Nn]; firstly computing the average value of the first sampling data P1 of the sequential sequence and the last sampling data Nn of thereversed sequence, and then obtaining a sampling value S1 of a first sampling point at an intermediate moment; and then computing the average value of the second sampling data P2 of the sequential sequence and the penult sampling data N(n-1) of the reversed sequence to obtain the sampling value S2 of a second sampling point at the intermediate moment; and so on, computing the sampling values of various sampling points at t