STFT与SOPC技术相结合实现高速跳频图案的识别与跟踪

Identification and Tracking of High-speed Frequency-hopping Pattern Based on STFT and SOPC Technology

本文根据频率跟踪式干扰的基本原理,提出一种基于短时傅里叶变换 (STFT)的高速跳频图案的识别与跟踪方案,并采用可编程芯片系统 (SOPC)技术进行了硬件实现。理论分析与实测结果表明,该系统实现 1024点的STFT仅需 84μs,可对 10 000跳 /秒以下的高速跳频图案实时识别与跟踪。

According to the basic theory of frequency track jamming, this paper proposes a scheme to identify and track high-speed frequency-hopping pattern based on Short Time Fourier Transform (STFT) theory. This scheme is realized by using System On Programmable Chip(SOPC) Technology. Analysis of capability and actual test demonstrate that the system performs the STFT of 1024 points in only 84μs, so it can identify and track the pattern of high-speed frequency-hopping system under 10 000 hop/s.