提出一种联合循环平稳法与多普勒模糊数搜索法的多分量Chirp信号相位参数精确估计算法，与已有循环平稳算法相比，该算法的相位参数取值范围不受限，低信噪比下的相位参

数估计精度约提高30 dB-Smooth fuzzy numbers and Doppler search method for multi-component the Chirp signal phase parameters the precise estimation algorithm, compared with existing cyclostationary algorithm proposed combined cycle, the phase of the algorithm parameters range is not limited by the low signal-to-noise than under the phase parameter estimation accuracy is improved by about 30 dB