中文摘要：

对基于单频连续波的地面固定目标无源雷达测向方法展开研究，提出一种频域测向算法．首先给出了该算法具体推导过程，得到其角度分辨率、峰值旁瓣比；然后从理论上与基于相同测向模型的时域算法进行了对比分析，二者具有等价性，但频域算法的运算量较小；最后进行了仿真实验验证．仿真结果表明该算法对随机出现的目标也能够准确测向，验证了所提算法的有效性．该频域算法能够有效降低运算量，因此具有较好的应用价值．

英文摘要：

This paper presents a frequency domain direction-finding algorithm by studying direction-finding methods of the ground-fixed-target passive radar based on single frequency continuous wave.Firstly,the specific derivation process of this algorithm is introduced to obtain its angle resolution and peak sidelobe rate.And then in the paper theoretical comparisons and analyses are made between this algorithm and the time domain algorithm based on the same direction-finding model.The two methods are equivalent,but the frequency domain algorithm has less computation burden.Finally the paper conducts simulation experiment and the results show the effectiveness of the proposed algorithm.The frequency domain algorithm can reduce the computation amount effectively,hence having a good application value.