一种基于复相关技术的频率估计方法

A Frequency Estimate Method Based on Complex-Correlation

提出了一种适用于声学多普勒测速的复相关技术频率估计方法。通过阐述了该方法的原理及其实现,表明该方法符合声学多普勒测速原理的要求,且运算量小,易于实现。仿真结果表明,该方法受噪声影响小,测量结果的误差小。因而该方法在声学多普勒测速技术中具有良好的应用前景。

The paper presents a method for frequency estimate based on complex-correlation, which is applicable to the testing of the velocity of the acoustical Doppler effect. By presenting the principle of the method and its realization, this paper proves that the method meets the velocity testing principle of the acoustical Doppler effect and that the method has the advantages of low operation and easy realization. Simulation experiments show that noise has little effect on the method and therefore errors in measurements by this method is small.