Abstract: A joint spectral parameter estimation algorithm based on double rotary single dipole array is proposed. By rotating the array element and modifying the steering vector of the spectral function in the polarized MUSIC algorithm, a multi-objective direction finding can be realized with two elements, which overcomes the traditional algorithm requirements that the number of elements should be greater than that of the signal sources. The simulation results show that the proposed algorithm is superior in the performance to the traditional six-element polarization-sensitive uniform circular array under the influence of small snapshot and low signal-to-noise ratio(SNR), which can reduce the cost with fewer channels. The single dipole array described in this algorithm can be constructed with any polarized sensitive antenna element or combination, and can be easily applied to other structures.