Combined Doppler estimation method based on dynamic adjustment of sampling rate

The invention discloses a combined Doppler estimation method based on dynamic adjustment of a sampling rate. The combined Doppler estimation method comprises the steps of S1, adding a starting frame of an LFM+CW signal to carry out carrier capture and coarse synchronization; and S2, carrying out fine synchronization by measuring the peak value offset of the LFM signal. The step S1 comprises the steps of after a first LFM signal is identified by an LFM pulse compression peak value obtained by matched filtering, achieving capture and coarse synchronization of a single carrier through a COSTAS ring to obtain an initial Doppler estimation result, and adjusting the sampling rate for the first time. Compared with the prior art, the method has the advantages of being accurate and reliable in estimation result, small in calculation amount, easy to implement, high in real-time performance, easy to implement and the like. 本发明公开了一种基于采样率的动态调整的组合多普勒估计方法，包括以下步骤：S1、通过添加一个LFM+CW信号的起始帧进行载波捕获和粗同步；S2、通过测定LFM信号的峰值偏移进行细同步。所述步骤S1包