非均匀共形天线阵多基线联合测角及最优布阵设计

Design of Multi-Baseline Combination Direction-finding Method and the Optimal Antenna Array Based on Non-uniform Conformal Antenna Array

针对主被动复合反辐射制导中的被动非均匀共形天线阵方位俯仰二维测角问题,提出了一种多基线联合测角方法,并在该方法的基础上提出了非均匀共形天线阵最优布阵设计方法。首先,针对非均匀布阵情况,通过几何建模和推导分析,将只能完成一维测角的传统干涉仪推广为能完成方位俯仰二维测角的双基线联合干涉仪;其次,针对测角模糊问题,提出了多基线联合解模糊算法,该算法通过求解一个最小化问题完成二维测角解模糊;最后,提出了一种非均匀最优布阵评价准则和最优布阵选择方法,通过基于超算并行平台的仿真试验验证了所提方法的有效性。

A new direction-finding method named Multi-Baseline Combination Method(MBCM)is proposed for 2D direction-finding based on wideband non-uniform conformal antenna array which is used in active-passive composite anti-radiation seeker;and based on MBCM,a method for finding the optimal non-uniform conformal antenna array is presented.First,through geometry modeling and analysis,conventional interferometer which can only perform 1D direction-finding is extended to double-baseline interferometer which can achieve 2D direction-finding based on non-uniform conformal antenna array.Then,to tackle the angle-measure ambiguity problem,multi-baseline combination method is presented,which resolves the 2D angle-measure ambiguity through problem minimization.Finally,a criterion for finding the optimal non-uniform conformal antenna array is presented,and the effectiveness of the criterion is validated by parallel computation experiments on super computer.