中文说明： 由于被动雷达中广泛应用的测角方法应用于宽带信号测向时存在着各种问题，将互谱法应用于被动雷达宽带信号测向。针对互谱法测向中相位模糊与测角精度存在的矛盾，提出用两频率点的频率差和对应的互谱相位差值的关系来解相位模糊的频率-相位差值法，突破了互谱法中阵元间距不大于信号最小波长一半的限制，有效的保证了测角精度。最后对相位差值进行修正，解决相位跳变问题，用两个阵元即可实现宽带信号测向。
English Description：
Because there are many problems when the angle measurement method widely used in passive radar is applied to wideband signal direction finding, cross spectrum method is applied to wideband signal direction finding of passive radar. In view of the contradiction between phase ambiguity and angle measurement accuracy in cross spectrum direction finding, a frequency phase difference method is proposed to solve the phase ambiguity by using the relationship between the frequency difference of two frequency points and the corresponding cross spectrum phase difference, which breaks through the restriction that the distance between array elements in cross spectrum method is not more than half of the minimum wavelength of signal, and effectively ensures the angle measurement accuracy. Finally, the phase difference is corrected to solve the problem of phase jump, and the wideband signal direction finding can be realized with two array elements.