Tianjin Key Lab for Advanced Signal Processing, Civil Aviation University of China, Tianjin 300300, China.
AVIC Lei Hua Electronic Technology Research Institute, Wuxi 214063, China.
Sensors (Basel). 2022 Dec 29;23(1):371. doi: 10.3390/s23010371.
In this paper, a low-altitude wind speed estimation method based on the fuselage frustum conformal array system is proposed. Firstly, based on the signal model of the fuselage conformal array radar, the four-dimensional joint phase compensation of the echo data in the Doppler domain and three-dimensional space-frequency domain is performed by using the four-dimensional frequency domain compensation method. Secondly, the clutter covariance matrix is estimated by the compensated echo data, and a space-time Adaptive Processing (STAP) processor suitable for low-altitude windshear target is constructed to suppress clutter. Finally, the maximum Doppler value of each distance cell is extracted, and the wind velocity is estimated. Simulation results show that the proposed method can effectively suppress clutter and accurately estimate wind speed.
本文提出了一种基于机身截锥共形阵列系统的低空风速估计方法。首先，基于机身共形阵雷达的信号模型，采用四维频域补偿方法对多普勒域和三维空频域的回波数据进行四维相位联合补偿。其次，利用补偿后的回波数据估计杂波协方差矩阵，构建适用于低空风切变目标的空时自适应处理（STAP）处理器抑制杂波。最后，提取每个距离单元的最大多普勒值，估计风速。仿真结果表明，该方法能有效抑制杂波，准确估计风速。
