摘要
阵元间互耦的存在会严重影响雷达的目标定位算法性能。利用MIMO雷达的特性,基于均匀线阵互耦矩阵模型的对称带状Toeplitz性,在互耦信息未知的情况下,提出了一种双基地MIMO雷达发射阵列和接收阵列互耦同时校正的算法。利用Capon谱估计,并结合相关文献中对均匀线阵互耦矩阵的计算和建模,将求解互耦系数转化为线性约束二次最小化问题,采用迭代的方式进行校正。此算法不需要校正源,也不需要进行特征值分解。计算机仿真实验表明了该算法的有效性。
The performance of localization algorithm is seriously degraded by the presence of mutual coupling in the steering vector. According to the structural speciality of MIMO radar, and as the mutual coupling matrix of uniform linear array is a banded symmetric Toeplitz matrix, a calibration algorithm for both transmitting array and receiving array of bistatic MIMO radar system is proposed. The calibration can be performed without any calibration source and any mutual information. The coupling coefficients vector is computed by finding the solution of a linear constrained quadratic problem, so eigenvalue decomposition is not requisite. Computer simulation results validate the effectiveness of the proposed algorithm.
出处
《电波科学学报》
EI
CSCD
北大核心
2010年第4期663-667,813,共6页
Chinese Journal of Radio Science
基金
国家杰出青年科学基金(No.60825104)
国家自然科学基金(No.60736009)
