基于加窗重叠FFT变换抗窄带干扰技术的FPGA实现

Application of FPGA Based on Windowing and Lapped FFT Transformation Narrowband Interference Suppression Technology

在军事卫星通信中，直接序列扩频技术是一种有效的抗干扰技术手段。本文首先研究了加窗重叠FFT变换抗干扰技术，而后进行了计算机仿真，优化选取了算法实现时的参数，最后在FPGA平台上实现了该算法。硬件测试结果表明，该算法满足系统性能指标要求。

Direct Sequence Spread Spectrum （DSSS） technology is an effective anti-jamming measure in military satellite communications. In this paper, the Windowing and Lapped FFT are first studied, and computer simulation is carried out. The optimization selects the parameters at algorithm realization. Finally, the algorithm is implemented on FPGA platform. The test results show that the algorithm can meet the requirements of the system performance.