基于TR技术的sin-FDA-MIMO距离角度联合估计

多输入多输出正弦频控阵雷达能够对目标在空间中的距离和角度进行二维估计，如何提高二维估计的精度变得尤为重要。为了提高sin-FDA-MIMO目标距离角度联合估计精度，本文引入时间反转技术，利用信号多路径传播的空间多样性来提高距离角度估计算法的性能。本文首先分析了sin-FDA-MIMO的接收信号模型，其次推导了基于TR技术的sin-FDA-MIMO雷达的接收信号模型，对两种信号接收模型分别采用Capon和MUSIC算法进行单目标和两目标距离和角度的估计。最后仿真验证了本文结论的正确性。

Joint Range and Angle Estimation of sin-FDA-MIMO Based on TR Technology

The multiple-input multiple-output (MIMO) sin frequency diverse array (sin-FDA) radar has the ability to estimate the angle and range of targets and it is crucial to improve the accuracy of two-dimensional estimation. To increase the range-angle estimation accuracy of the sin-FDA-MIMO radar, time reversal (TR) technology is introduced to make full use of the spatial diversity of multipath propagation and improves the performance of range-angle estimation algorithm. At first, the receive signal model of the sin-FDA-MIMO is analyzed. Then, the receive signal model of the sin-FDA-MIMO is derived based on TR technology. The Capon and MUSIC algorithms are used to estimate both the range and angle of single target and two targets respectively for two kinds of signal receive models. Finally, the correctness of the conclusion is verified by simulation.