针对传统压制式干扰仪对采用扩频技术的宽带码分多址(WCDMA)干扰不理想, 以及WCDMA欺骗式干扰仪实现复杂的问题, 基于PicoZed SOM软件定义无线电平台设计出一套新型智能干扰系统。实验测量表明, 该系统发射功率仅为23 dBm时, 能有效管控半径10 m范围的WCDMA通信信号。整个设计的实现分为4个步骤: 第1步基于WCDMA的小区搜索过程, 设计出一种带有WCDMA小区同步特征的干扰信号；第2步使用MATLAB仿真验证该方法的有效性；第3步设计WCDMA干扰模块和WCDMA数字上变频模块, 实现在FPGA上产生带有同步信息的干扰信号；第4步基于ADI提供的PicoZed SOM参考工程, 实现在空口发射WCDMA干扰信号。

The jamming effect of traditional blocking jammer on Wideband Code Division Multiple Access(WCDMA) by using spread spectrum technology is not good, and the implementation of WCDMA deceptive jammer is complex. An intelligent jamming system is designed based on the PicoZed SOM. Experiments show that when transmitted power is set at 23 dBm, this system can effectively block a range of ten meters WCDMA communication signal. The whole design is divided into four steps: firstly, a kind of jamming signal with the cell synchronization characteristics of WCDMA is designed based on WCDMA cell search process; secondly, MATLAB is adopted to verify the effectiveness of the method; thirdly, WCDMA jamming module and WCDMA DUC(Digital Up Converter) module are designed to generate the jamming signal on FPGA; lastly, the system is implemented based on the PicoZed SOM reference project provided by ADI to transmit WCDMA jamming signal to the air.