宽带被动导引头天线系统性能分析

详细讨论了宽带被动导引头中的关键部件－超宽频带天线的性能，并在此基础上分析了三种具备大视角特性的被动测角方法。由于宽带天线没有确定的相位中心，因此不能采用通常的振幅和差式单脉冲法进行宽频带测角。本文提出的波束运算网络可用于一个宽带螺旋天线同时得到两个交叉波束的振幅－振幅式单脉冲系统中。此外，对比幅相干测向法中的测角模糊问题也进行了研究。

The Antennas Performance of Broad-band Passive-Guiding System

The performance of the ultra broad-band antennas which are the key component in the broad-band passive-guiding system is analysed in details in this paper, and then three tins of passive direction-finding schemes which all have broad field of vision are analysed. Because of the uncertain position of the phase-centers of the antennas, the normal amplitude sum-substraction monopulse method can not be used to find the direction of a radiative source in a wide frequency range. A beam-operation network which can be used to form two overlapping beams from one broadband spiral antenna is able to applied in the amplitude-monopulse system. The angular confusion in the amplitude-coherent direction-finding system is also studied.