针对雷达电子战中，敌方无源探测雷达通过接收干扰机信号实现测向定位，威胁我方干扰机安全的问题，提出一种基于频率分集阵列 (Frequency Diverse Array，FDA) 的测向交叉定位欺骗技术。首先在建立 FDA 阵列模型的基础上，通过欧拉公式得到采用非线性频控函数的 FDA 阵列因子及相位方向图; 然后推导了 FDA 阵列作用于干涉仪测得的信号到达角 β、虚拟发射机在 X 轴的坐标位置 x; 接着，以干涉仪测向欺骗为基础，分析了 FDA 干扰机对测向交叉定位系统的欺骗原理及定位精度。仿真结果表明: 通过合理地对载频、阵元数目、频偏的选择可以较好地实现在远场条件下 FDA阵列对干涉仪测向的欺骗效果; 在合理选择其他参数的同时，测向精度越高、定位模糊区面积越小，且定位虚拟干扰机位置始终落在 50%CEP 半径之外。

In the radar electronic warfare，the enemy's passive detection radar can realize the direction finding and positioning by receiving the jammer signal，threatening the safety of our jammer． Thus a direction-based cross-lo-cation spoofing technique based on Frequency Divers Array (FDA) was put forward． Firstly，the FDA array fac-tor and phase pattern using nonlinear frequency offset were obtained by Euler's formula based on the establishment of the FDA array model． Then the FDA array was used to measure the signal arrival angle β and position x of the virtual transmitter in x-axis of the coordinate． Next，based on the effect of the interferometer's direction-finding de-ception，the deception principle and positioning accuracy of the FDA jammer to the direction-finding cross-positio-ning system were analyzed． The simulation results show that the FDA can well deduct the effect of the interferome-ter in the far field condition by reasonably selecting the carrier frequency，the number of array elements and the
frequency offset． While other parameters are reasonably selected，the higher the direction finding accuracy is，the smaller the positioning blur area is，and the position of the positioning virtual jammer always falls outside the 50% CEP radius．