Abstract: ‍ ‍The micro-motion signatures of the target’s rotating blades play important roles in radar space target recognition， but it is difficult to measure micro-motion parameters when the radar echo has flashing phenomenon. In order to solve this problem， a novel micro-motion compensation method based on frequency modulated continuous wave millimeter wave radar to estimate the micro-motion parameters under flashing phenomenon is proposed. Firstly， the scattering point model of frequency modulated continuous wave radar echo for the rotating target is established， and the analytical expression of radar baseband echo signal from the rotating blades is obtained by use of line integral， the mathematical mechanism of flashing is analyzed. Secondly， given the fact that the obtained signal is featured by periodical pulse， a parameterized compensation operator based on the periodical pulse model is constructed， and then the echo signal is compensated by the operator. Finally， the micro-motion parameters of rotating blades is estimated by detecting the energy peak value of compensated signal. The experiment results of simulation and experiment data show that the proposed method can accurately extract rotating frequency， length and initial phase of rotating blades and has high accuracy for parameter estimation in the condition of flashing phenomenon.