在卫星导航接收机中，传统调零天线无法形成对卫星信号的主瓣指向．为了能同时形成多个天线方向图主瓣，并分别对准不同卫星信号，从而提高阵列增益，文中引入导
向约束条件，采用直接矩阵求逆方法求解每个卫星信号的最优权矢量解，并完成波束合成; 分析了文中算法的运算量，给出了阵列增益的解析表达式．研究表明，文中算法不仅抑制了外部干扰，而且克服了卫星信号间的相互干扰，形成了对每个卫星信号的主瓣指向，提高了输出信噪比．方向图和期望信号输出信干噪比的仿真结果验证了该算法的有效性．

In satellite navigation receivers,traditional nulling antennas cannot form the main lobe of satellite signal points.In order to form a plurality of main lobes of an antenna corresponding to different satellite signals and thus to improve array gains,an orientation constraint condition is introduced into this paper,and direct matrix inversion is adopted to solve the optimal weight vectors of each satellite signal.Moreover,a beamforming is completed.Then,the computation amount of the proposed algorithm is discussed,and an analytical expression of the array gains is proposed.It is found that this algorithm not only suppresses the external disturbance but also overcomes the mutual interference between satellite signals,and it causes the main lobes of each satellite signal to form,thus improving output SNR.In addition,the effectiveness of the proposed algorithm is demonstrated by the simulation results of pattern and output SINR.