- 期刊
High Accuracy Frequency and 2D-DOAs Estimation of Conformal Array Based on PARAFAC
並列摘要
Owe to the varying curvature of the conformal carrier, the conventional direction-of-arrival (DOA) estimation algorithms could not be applied to the conformal array. In this study, a novel joint frequency and 2D-DOA estimation algorithm for a cylindrical conformal array is proposed. Firstly, the snapshot data model is established with polarization diversity (PD) of element patterns. Subsequently, the decoupling between the polarization parameter and DOA can be realized with well array structure design. The parallel factor (PARAFAC) analysis is utilized for the joint frequency and 2D-DOA estimation without parameter pairing. The proposed algorithm can be extended to other array structure with little modification. To illustrate the versatility of the proposed algorithm, the simulation results with the cylindrical conformal array are shown and discussed.
延伸閱讀
- Wan, L., Si, W., Liu, L., Tian, Z., & Feng, N. (2014). High Accuracy 2D-DOA Estimation for Conformal Array Using PARAFAC. International Journal of Antennas and Propagation, (2014-3), 92-105. https://doi.org/10.1155/2014/394707
- Iunn, T. I. (2020). Joint Direction-of-Arrival and Frequency Estimation Using Nested Arrays and Multiple-Delay Outputs with Coarray ESPRIT [master's thesis, National Taiwan University]. Airiti Library. https://doi.org/10.6342/NTU202000191
- Wang, N., Wang, W. G., Zhang, F., & Yuan, Y. N. (2014). The PARAFAC-MUSIC Algorithm for DOA Estimation with Doppler Frequency in a MIMO Radar System. International Journal of Antennas and Propagation, (2014-5), 25-29. https://doi.org/10.1155/2014/684591
- Zeng, W., Li, H., Zhu, X., & Wang, C. (2016). A FPC-ROOT Algorithm for 2D-DOA Estimation in Sparse Array. International Journal of Antennas and Propagation, 2016(), 906-911-92. https://doi.org/10.1155/2016/5951717
- Huang, Q., Zhou, H., Bao, J., & Shi, X. (2013). Accurate DOA Estimations Using Microstrip Adaptive Arrays in the Presence of Mutual Coupling Effect. International Journal of Antennas and Propagation, 2013(), 402-409-244. https://doi.org/10.1155/2013/919545