Frequency offset information estimation value determination method

The invention discloses a frequency offset information estimation value determination method. The method comprises the following steps: acquiring a carrier signal comprising frequency offset information to be estimated; determining frequency domain information of the carrier signal according to a preset twiddle factor and the carrier signal, wherein the twiddle factor is jointly determined based on a first parameter and a second parameter; determining the maximum value of the amplitude of the frequency domain corresponding to the frequency domain information; determining a point correspondingto a target frequency corresponding to the maximum value and a point corresponding to a target first-order change rate; and determining an estimation result of the to-be-estimated frequency offset andan estimation result of a first-order change rate of the to-be-estimated frequency offset based on the point corresponding to the target frequency and the point corresponding to the target first-order change rate. According t