Extracting of Micro Doppler Parameter of Helicopter Rotor Based on Time-Frequency Analysis
The micro Doppler effect of the radar echo signal of helicopter rotor is studied, and the formula of helicopter rotor echo is obtained. Then the received echo signal of helicopter rotor simulated is analyzed in time domain, frequency domain and time-frequency domain respectively, the analysis results show that it is a good method to extract micro Doppler of helicopter rotor echo by time-frequency analysis. According to analysis results, obtained a method to determine parity of blades and velocity of helicopter rotor, these methods can be used to identify helicopter.
L. Zhang and G. Q. Huang, "Extracting of Micro Doppler Parameter of Helicopter Rotor Based on Time-Frequency Analysis", Applied Mechanics and Materials, Vols. 130-134, pp. 2696-2700, 2012