基于短时傅里叶变换的跳频信号检测系统设计

Frequency Hopping Signal Detection System Design Based on Short-time Fourier Transform

基于长短窗口结合的傅里叶变换技术,设计出一种适用于装甲车辆通信设备的信号检测系统,该检测系统由射频处理模块、中频处理模块和ARM处理模块组成.试验室测试结果表明,该系统能够对车载通信设备跳频信号主要性能参数进行实时检测,达到了判定跳频设备工作状态是否正常的目标,从而满足了装甲车辆通信的正常需求.

Based on the length of the window combined with Fourier transform technique,a kind of frequency hopping signal detection system was designed for armored vehicles communication equipment in this paper. It consists of radio frequency processing module,intermediate frequency processing module and the ARM processing module. The testing results showed that the system can monitor momently the main performance parameters of frequency hopping signal in the communication equipment,and reach the target whether or not the frequency modulation equipment worked normally,and satisfy the requirements of the armored vehicles communication.