A synchronization method, comprising: obtaining a synchronization symbol position d̂ 0 of one time slot of an initial update period; taking N track frames as an update period to adjust the synchronization symbol position, and the step of adjusting the synchronization symbol position comprising: obtaining a synchronization symbol position d̂ k +1 = d̂ k + N track T̂ k of a corresponding time slot of a ( k +1) th update period according to a synchronization symbol position d̂ k of a corresponding time slot of a k th update period and an inter-frame sampling deviation estimation value T̂ k of said k th update period; wherein the corresponding time slot refers to a time slot corresponding to a position of said time slot of said initial update period; obtaining synchronization symbol positions of other time slots in said k th update period according to the synchronization symbol position d̂ k of the corresponding time slot of the k th update period and the inter-frame sampling deviation estimation value T̂ k of said k th update period, wherein the inter-frame sampling deviation is a timing deviation in a unit frame caused by a oscillator deviation of a sampling clock, and the inter-frame sampling deviation estimation value T̂ k refers to an estimation value of a synchronization symbol position deviation in one frame, k ≥ 0; so as to implement a timing synchronization. obtaining a synchronization symbol position d̂ 0 of one time slot of an initial update period; taking N track frames as an update period to adjust the synchronization symbol position, and the step of adjusting the synchronization symbol position comprising: obtaining a synchronization symbol position d̂ k +1 = d̂ k + N track T̂ k of a corresponding time slot of a ( k +1) th update period according to a synchronization symbol position d̂ k of a corresponding time slot of a k th update period and an inter-frame sampling deviation estimation value T̂ k of said k th update period; wherein the corresponding time slot refers to a time slot corresponding to a position of said time slot of said initial update period; obtaining synchronization symbol positions of other time slots in said k th update period according to the synchronization symbol position d̂ k of the corresponding time slot of the k th update period and the inter-frame sampling deviation estimation value T̂ k of said k th update period, wherein the inter-frame sampling deviation is a timing deviation in a unit frame caused by a oscillator deviation of a sampling clock, and the inter-frame sampling deviation estimation value T̂ k refers to an estimation value of a synchronization symbol position deviation in one frame, k ≥ 0; so as to implement a timing synchronization. obtaining a synchronization symbol position d̂ k +1 = d̂ k + N track T̂ k of a corresponding time slot of a ( k +1) th update period according to a synchronization symbol position d̂ k of a corresponding time slot of a k th update period and an inter-frame sampling deviation estimation value T̂ k of said k th update period; wherein the corresponding time slot refers to a time slot corresponding to a position of said time slot of said initial update period; obtaining synchronization symbol positions of other time slots in said k th update period according to the synchronization symbol position d̂ k of the corresponding time slot of the k th update period and the inter-frame sampling deviation estimation value T̂ k of said k th update period, wherein the inter-frame sampling deviation is a timing deviation in a unit frame caused by a oscillator deviation of a sampling clock, and the inter-frame sampling deviation estimation value T̂ k refers to an estimation value of a synchronization symbol position deviation in one frame, k ≥ 0; so as to implement a timing synchronization.