Multiple-peak low-Doppler-sidelobe phase-coded signal design method

The invention belongs to the radar technical field and discloses a multiple-peak low-Doppler-sidelobe phase-coded signal design method which can improve the performance of a radar. The phase-coded signal design method comprises the following steps: determining code element length of a phase-coded signal according to bandwidth of a radar transmitting signal and timewidth of the radar transmitting signal; determining the number of peaks of the phase-coded signal in the distance-Doppler dimension and the position of each peak in the distance-Doppler dimension; determining selection interval of Doppler frequency points of the phase-coded signal, and Doppler frequency band width for carrying out sidelobe suppression on the phase-coded signal, and determining the number of Doppler channels of the phase-coded signal in the distance-Doppler dimension; calculating sidelobe vector of each Doppler channel of the phase-coded signal; constructing an objective function according to the sidelobe vectors of all Doppler channels of the phase-coded signal; and solving the objective function to obtain the phase-coded signal.